#clojure – 2014-07-23

2014-07-23

00:01	sm0ke	how do i type hint return expression from a macro?
00:01	Jaood	,(let [[a [_ & b]] (split-with #(not= 3 %) [1 2 3 3 5 3 6])] (concat a b))
00:01	clojurebot	(1 2 3 5 3 ...)
00:02	Jaood	,(let [[a b] (split-with #(not= 3 %) [1 2 3 3 45 3 6])] (concat a (rest b)))
00:02	clojurebot	(1 2 3 45 3 ...)
00:02	sm0ke	(defmacro ^Foo [& b] `(...)) doesnt work
00:03	sm0ke	oh ..(defmacro [&b] (vary-meta `(..) assoc :tag `Foo)) did the trick
00:04	sm0ke	or may be not
00:04	ambrosebs	sm0ke: you might need to wrap in an extra do sometimes (defmacro bar [& body] (with-meta (list* 'do body) {:tag 'Foo}))
00:04	justin_smith	well you would need a macro name in there
00:05	sm0ke	ambrosebs: (defmacro [&b] (vary-meta `(do ..) assoc :tag `Foo)) would work too?
00:05	justin_smith	sm0ke: I am concerned that you are doing this much work eliminating reflection when you haven't really profiled yet. You'll get better performance gains with less work if you figure out where the specific bottleneck is.
00:05	ambrosebs	sm0ke: probably
00:06	sm0ke	hurm doesnt help either
00:06	sm0ke	is there something about type hinting inside record methods?
00:08	sm0ke	oh an of course (defmacro [^String s]..) wont work either?
00:08	sm0ke	what a mess
00:13	sm0ke	ok in a record method doing (foo [this ^String s] ...) just bluntly throws error
00:21	nkozo	Jaood: not really idiomatic I think :): (filter (let [found (atom false)] #(or @found (not (reset! found (= % 3))))) [1 2 3 4 3 5])
00:24	Jaood	nkozo: yeah, not idiomatic at all :), my attempt involves using a recursive fn using first, rest, conj
00:25	nkozo	Jaood: the better way is to implement it using lazy-seq
00:25	Jaood	nkozo: you first attempt was nice but not sure to call it idiomatic
00:26	nkozo	it really needs his own function
00:27	Jaood	nkozo: https://www.refheap.com/88491
00:28	Jaood	from the little schemer but wrote before looking at the answer
00:29	Jaood	was looking for an idiomatic version
00:30	justin_smith	,((fn drop1 [[x & y]] (if (= x 'a) y (lazy-seq (cons x (drop1 y))))) '[c b a a b c a b]) lazy-seq version
00:30	clojurebot	(c b a b c ...)
00:32	nkozo	another take: https://gist.github.com/anonymous/398e6732cae347d49339
00:33	sm0ke	justin_smith: i am already too deep in .. only few moreeeeeeeee fileSSAASRRFGGHH
00:34	sm0ke	heh btw how to type hint the `..` macro?
00:35	sm0ke	(.. a ^String foo bar) doesnt seem to work
00:35	justin_smith	sm0ke: .. is pretty much replacable with ->
00:35	justin_smith	and I think people just recommend replacing it nowadays
00:36	sm0ke	hurmm its pretty for use in builder pattern code
00:36	sm0ke	a.foo().bar()
00:36	justin_smith	(-> a foo bar)
00:37	sm0ke	(.. a foo bar) vs (->> a .foo .bar)
00:37	Jaood	I think I'm distracting myself to much with idiomatic versions :P
00:37	sm0ke	Jaood: yep it soon turns into idotic versions
00:38	justin_smith	,(-> "hello" .length .toString)
00:38	clojurebot	"5"
00:38	sm0ke	,(.. "hello" length toString)
00:38	clojurebot	"5"
00:38	justin_smith	I don't think the -> is that much worse
00:39	justin_smith	and my original point was that you already figured out how to hint ->
00:41	sm0ke	yep
00:41	sm0ke	agreed
00:42	Jaood	python has so much stuff to get things done - clojure will get there!
00:44	justin_smith	Jaood: clojure makes it possible to use multiple cores efficiently, python will likely never get there
00:46	Jaood	nkozo: you are returning a nil value inside the lazyseq on empty collections
00:47	Jaood	justin_smith: yeah, the trade-offs one has to make ;)
00:52	nkozo	Jaood: fixed, https://gist.github.com/nahuel/eb7073d02c0aec6256d2 ... btw, justin_smith version never returns for empty collections
00:52	justin_smith	,((fn drop1 [[x & y :as s]] (when (seq s) (if (= x 'a) y (lazy-seq (cons x (drop1 y)))))) '[a b a b a]) speaking of, mind handled nil wrong too
00:52	clojurebot	(b a b a)
00:52	justin_smith	nkozo: ynx
00:52	justin_smith	*jynx
00:55	amalloy	justin_smith: you don't really want to use & destructuring for building lazy sequences anyway
00:56	amalloy	you'll consume more elements than you intend to, because you realize the first element of y even if nobody asks for it
00:56	justin_smith	oh, right
00:57	justin_smith	that's an abuse of when too
00:57	amalloy	which is stupid, imo, i wish that ##(let [[x & y] [1]] [x y]) returned [1 ()] instead of [1 nil], but there you have it
00:57	lazybot	⇒ [1 nil]
01:00	amalloy	justin_smith: how is it an abuse of when?
01:01	justin_smith	referring to the "when for side effects" discussion that was once perrenial here
02:37	blur3d	Would you guys consider extending a project dependancy’s (internal) multi-method to be hackish? (ie. I am requiring a library that uses multi-methods to handle different message types, and I want to extend it to support custom ones)
02:40	engblom	blur3d: Yes, in my ears at least. It would be very difficult for someone else to notice what you actually did, in case they read the code later.
02:40	blur3d	yeah… it doesn’t sit too well with me
02:41	blur3d	do you know of an alternative - even if it means forking the dependancy
02:41	blur3d	some kind of register-handler that you can hook into?
02:42	nathan7	blur3d: I'd clearly state it in internal docs
02:42	nathan7	blur3d: and do it anyway
02:43	blur3d	nathan7: yeah, that was the original thinking. Just make sure it was documented clearly
02:44	blur3d	It would only have a max of 16 methods extending it, and they would be very project specific
02:44	blur3d	so it’s unlikely that you would have conflicts
02:45	blur3d	the downside is that I don’t think you can remove a multi-method once defined - but again that would be very unlikely
02:46	amalloy	blur3d: it's something i'd aim to not do, but it's not necessarily a bad thing in every case
02:46	amalloy	what library/multimethod is this?
02:47	blur3d	https://github.com/peterschwarz/clj-firmata/blob/develop/src/firmata/core.clj#L181
02:48	blur3d	It’s currently private, as well as a few other useful methods, but Peter is open to making it public - and I just want to make sure it’s a good idea
02:48	blur3d	or at least it’s done properly
05:09	mpenet	,(deftype x [^:volatile-mutable a b]) (def y (x. 1 2))
05:09	clojurebot	sandbox.x
05:10	mpenet	,(.a y)
05:10	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: y in this context, compiling:(NO_SOURCE_PATH:0:0)>
05:10	mpenet	anyone knows what's wrong here?
05:10	Glenjamin	,(def a) (def b)
05:10	mpenet	without the volatile-mutable metadata it works fine
05:10	clojurebot	#'sandbox/a
05:10	Glenjamin	,b
05:10	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: b in this context, compiling:(NO_SOURCE_PATH:0:0)>
05:10	Glenjamin	you need a (do) in that first form for the irc repl
05:10	mpenet	ah
05:11	mpenet	,(do (deftype z [^:volatile-mutable a b]) (let [x (z. 1 2)] (.a x)))
05:11	clojurebot	#<IllegalArgumentException java.lang.IllegalArgumentException: No matching field found: a for class sandbox.z>
05:11	mpenet	,(do (deftype z [a b]) (let [x (z. 1 2)] (.a x)))
05:11	clojurebot	1
05:13	mpenet	so it makes the field private apparently, I don't think it's documented anywhere
05:15	swi	Hello again :) what good json library for clojure ? clojure/data.json is good one ?
05:15	mpenet	swi: cheshire
05:16	swi	mpenet: thanks :)
05:17	swi	so many libs for one task :)
05:20	swi	btw, where is default :repositories of lein is written ?
05:21	chamomile	swi: nice ref - http://www.clojure-toolbox.com/
05:22	swi	chamomile: wow, nice! thanks. I'm using http://clojuredocs.org/ right now, but seems they not complete
05:49	ddellacosta	swi lately folks have been using http://www.arrdem.com/grimoire/
05:49	ddellacosta	swi: clojuredocs.org is out of date, as you probably noticed
06:04	fenrock	is there a way to list all namespaces/functions available to user ns directly? I've got one that's disappearing on me after invoking it once i want to try and work out why_away
06:04	fenrock	s/why_away/why/
06:20	fenrock	seems (ns-map 'user) does what i want
06:23	rritoch	@fenrock, the Java way is to utilize the classloader to get a list of the packages and to access their respective resources. Doing this from clojure MAY be somewhat more complex and MAY require some parsing of the source files but SHOULD still be possible.
06:25	fenrock	it's another clojure function that binds to user, but then vanishes from it after being called. trying to work out why
06:28	swi	ddellacosta: yes, i'v noticed that cljdocs old, is there similar resource for actual version ?
06:28	swi	ddellacosta: oops, sorry, open link and find out :) thanks
06:28	ddellacosta	swi: :-)
06:29	rritoch	fenrock: Anyhow, looks like clojure provides it's own method, in addition to ns-map you should be able to use (all-ns) to get all of the namespaces. I guess someone was thinking ahead when they designed clojure.
06:29	rritoch	fenrock: But if you also need the Java components you'll need to utilize the classloader
06:30	fenrock	cheers
06:30	ddellacosta	&ns
06:30	lazybot	⇒ #<Namespace sandbox5671>
06:30	ddellacosta	&(map first (ns-publics ns))
06:30	lazybot	java.lang.SecurityException: You tripped the alarm! ns-publics is bad!
06:30	ddellacosta	d'oh
06:31	ddellacosta	fenrock: if you want to see public functions in a namespace the above can help ^
06:31	ddellacosta	or mappings I should say
06:31	fenrock	thanks ddellacosta
06:36	swi	hm.. is clojure regex know about .* pattern ?
06:36	fenrock	ddellacosta: wow, ns-publics cut the list down to just the stuff i was interested in. magic
06:36	ddellacosta	fenrock: :-)
06:36	ddellacosta	swi: Regex in Clojure is the same as Java; just check out the Java docs for it.
06:37	fenrock	isn't there also less excessive back-slashing?
06:37	ddellacosta	&(re-find #".*" "foo")
06:37	lazybot	⇒ "foo"
06:38	ddellacosta	fenrock: what do you mean?
06:38	fenrock	you don't need to do "\\s", you can do "\s"
06:39	fenrock	&(re-find #"\shi\sthere" " hi there")
06:39	lazybot	⇒ " hi there"
06:39	ddellacosta	swi: This is probably a good place to refer to, other than the docs for stuff in clojure.string and re-find (in clojure.core): http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html
06:39	ddellacosta	fenrock: oh yeah, I guess so. Do you need to add extra backslashes in Java for that?
06:40	fenrock	yes inside regular strings
06:40	ddellacosta	huh, didn't realize that.
06:40	swi	ddellacosta: thanks, allready there :)
06:40	ddellacosta	swi: great. :-)
06:42	swi	yep, re-find works :)
06:42	ddellacosta	,(println "test")
06:42	clojurebot	eval service is offline
06:43	ddellacosta	don't know why I bother to check
06:43	Glenjamin	,:why?
06:43	clojurebot	:why?
06:43	ddellacosta_	,:because
06:43	clojurebot	:because
06:43	ddellacosta	,:because
06:43	clojurebot	eval service is offline
07:04	swi	i'm wounder, if i (def mypattern #"\d+") in my code, it will be em, 'compiled' once for all programm run ? I mean no extra resource to build it on every using ?
07:08	CookedGr1phon	swi that's correct, the #"" is a compile time literal, so even if you use it inline and don't def it, it will only be compiled once
07:09	fenrock	swi: according to http://clojure.org/other_functions "Regex patterns can be compiled at read-time via the #"pattern" reader macro, or at run time with re-pattern. Both forms produce java.util.regex.Pattern objects."
07:10	CookedGr1phon	but yeah, you're deffing it as well, so even if you did (def mypattern (re-pattern "\d+")), that would only have the regex compiled once
07:11	swi	CookedGr1phon: so as i understand no diff, nice clojure do it's smart work and compile it's once :) Good
07:27	SagiCZ	,(println "quiet in here")
07:27	clojurebot	quiet in here\n
07:32	madscientist`	How do I replace the Java this keyword in Clojure? I am porting a piece of Java code to Clojure and the `network.addNetworkReqListener(this, this.authAppId);' raises the question how to replace the this (the first argmument) reference
07:37	vijaykiran	madscientist`: what is "this" in this context? is it something you are constructing ?
07:39	madscientist`	vijaykiran: I suppose it is the class context
07:40	madscientist`	the line is in a private method (not a constructor)
07:44	vijaykiran	madscientist`: If you are calling the method - then you can create a proxy for the interface this
07:55	madscientist`	vijaykiran: https://code.google.com/p/jdiameter/source/browse/examples/guide1/src/main/java/org/example/server/ExampleServer.java#126 thats code I am porting, but I am not sure whether a proxy is the correct solution because the method is not specified in the interface
08:06	vijaykiran	madscientist`: https://code.google.com/p/jdiameter/source/browse/core/jdiameter/api/src/main/java/org/jdiameter/api/NetworkReqListener.java
08:07	vijaykiran	madscientist`: so you can create an instance/proxy with the processRequest method and pass it as this
08:07	madscientist`	vijaykiran: figured that out myself too, thanks for the help
08:27	CookedGr1phon	Is anyone around who was talking about monitorenter/monitorexit yesterday? hiredman amalloy_ Bronsa bbloom ? I've been having a look at the ART verifier source and it seems the condition we're tripping over is https://android.googlesource.com/platform/art/+/kitkat-release/runtime/verifier/method_verifier.cc line 2731
08:27	CookedGr1phon	which states that every instruction where the monitorenter count > 0 should be within a catch all block
08:47	agarman	anyone have opinions on http://docs.paralleluniverse.co/pulsar/
08:53	hcumberdale	Hi there :)
08:54	hcumberdale	How to return a list from a recursive function that will end up with (recur ? Has the list to be a parameter so it's possible to do the tailcall?
08:55	Glenjamin	hcumberdale: you can use an explicit accumulator in the loop
08:55	Glenjamin	,(loop [a 10 acc nil] (if (zero? a) acc (recur (dec a) (conj acc a)))
08:55	clojurebot	#<RuntimeException java.lang.RuntimeException: EOF while reading>
08:56	Glenjamin	)
08:56	Glenjamin	,(loop [a 10 acc nil] (if (zero? a) acc (recur (dec a) (conj acc a))))
08:56	clojurebot	(1 2 3 4 5 ...)
08:56	hcumberdale	that will be the same as adding the accumulator to the fn def and not using loop right?
08:57	Glenjamin	yeah, but then you either need to make it a required param, or have a multi-arity function
08:58	hcumberdale	When not working with numbers and instead with list parameters, is there a shorter form for: if-let [next-node (first nodeset)] .... (recur .... (rest nodeset))?
09:01	Glenjamin	,(let [[head & tail] [1 2 3 4]] [head tail])
09:01	clojurebot	[1 (2 3 4)]
09:01	Glenjamin	does that help?
09:01	Glenjamin	there's probably some gotchas around destructuring vs (rest) vs (next), but i don't recall what they are
09:02	tvanhens	does anyone have any pallet experience with aws?
09:02	hcumberdale	ahh okay! thx
09:03	hyPiRion	hcumberdale: that looks like some pattern which can be transformed to use `map`, `filter` or `reduce`
09:04	hyPiRion	either way, I tend to do destructuring in the binding for those things
09:05	hyPiRion	,(loop [acc () [f & r] [1 2 3 4 5]] (if f (recur (conj acc f) r) acc))
09:06	clojurebot	(5 4 3 2 1)
09:07	chamomile	,(str "test")
09:07	clojurebot	"test"
09:07	chamomile	nice
09:08	yogsototh	Hi! I am trying to read the body of a request with ring/compojure. I do a (POST "/" req (str "'" (slurp (:body req)) "'")) and this returns nothing.
09:09	yogsototh	the type of body is class org.eclipse.jetty.server.HttpInput but I don't really know how to export the string out of it.
09:10	yogsototh	I don't use any middleware
09:11	yogsototh	Can anyone could help me? I am stuck for some time now.
09:11	yogsototh	My google fu is weak.
09:11	drbobbeaty	yogsototh: I have had success with the following: (POST "/" [:as {body :body}] and then in the body of the function refer to it like: (let [lst (json/parse-string (slurp body))] ...)
09:12	drbobbeaty	yogsototh: Where I'm using the cheshire JSON parsing library :as json.
09:12	yogsototh	drbobbeaty: thanks, I'll try it.
09:12	jonasen	I see some similarities between Transit and https://github.com/tailrecursion/cljson. I wonder if Transit is directly inspired by cljson? Are there other formats that take advantage of the speed of JSON parsers?
09:12	drbobbeaty	yogsototh:Good luck
09:13	swi	I dont understand http://paste.debian.net/111199/ what the difference ?
09:17	augustl	swi: nothing, it seems
09:18	swi	augustl: than i dont understand macros, seems :)
09:19	augustl	swi: is there a difference?
09:20	swi	augustl: in my point of view there is no diff. so i dont understand for what macros is :(
09:22	yogsototh	drbobbeaty: I found a way somehow! Thanks! The problem was certainly that slurp was called before. Resulting in an empty string the next call.
09:22	drbobbeaty	yogsototh: Glad you got it working! :)
09:23	augustl	swi: well, the macro just returns the same code as the function
09:23	augustl	swi: so using that macro to understand macros might be a bit difficult since the macro doesn't provide any value :)
09:23	michaelr525	hey
09:23	augustl	swi: so, it's possible to create a macro that doesn't really do anything
09:27	swi	augustl: doesnt' provide value ? return value not the same ?
09:29	augustl	swi: doesn't provide value as in value to a programmer :)
09:29	augustl	it doesn't do anything useful
09:30	swi	augustl: seems like i need to read about macros again :) right from begining :)
09:31	hyPiRion	swi: The only thing it does is inlining the form, but that's compiler work anyway.
09:32	hyPiRion	see -> or ->> instead on more valuable macros
09:32	swi	hyPiRion: thanks, i will :)
09:39	xsyn	can I map juxt over a seq?
09:39	justin_smith	,(map (juxt inc dec) (range 10))
09:39	clojurebot	([1 -1] [2 0] [3 1] [4 2] [5 3] ...)
09:40	xsyn	sweet
09:40	hyPiRion	you can mapcat it too
09:48	SagiCZ	any simple way to convert keyword to a symbol?
09:48	boxed	,(symbol (name :foo))
09:48	clojurebot	foo
09:49	boxed	I think that’s right anyway :P
09:49	SagiCZ	thanks
09:49	SagiCZ	,(symbol (name (def red :meat)))
09:49	clojurebot	#<ClassCastException java.lang.ClassCastException: clojure.lang.Var cannot be cast to clojure.lang.Named>
09:51	jcromartie	is this up to date? https://github.com/clojure/clojurescript/wiki/The-REPL-and-Evaluation-Environments
09:52	boxed	,(def red :meat)(symbol (name red))
09:52	clojurebot	#'sandbox/red
09:54	justin_smith	boxed: you need do
09:54	boxed	ah
09:54	justin_smith	,(do (def red :meat) (symbol (name red)))
09:54	clojurebot	meat
09:54	justin_smith	,(+ 1 1) (/ 1 0) all this invalid stuff is ignored (System/exit 0)
09:54	clojurebot	2
09:55	boxed	that’s a bit awkward
09:56	hyPiRion	boxed: it's just the bot, not clojure itself
09:57	boxed	yea I get that, but it’s a bit awkward when trying to show stuff
09:57	SagiCZ	,{:red :meat :tasty :stuff}
09:57	clojurebot	{:tasty :stuff, :red :meat}
09:57	boxed	maybe an implicit do around it would have been nice
09:58	SagiCZ	guys.. what do i need this @ for when writing macros? i dont understand what splicing is
09:58	Glenjamin	,`(list ~@[1 2 3])
09:58	clojurebot	(clojure.core/list 1 2 3)
09:59	Glenjamin	,`(list ~[1 2 3])
09:59	clojurebot	(clojure.core/list [1 2 3])
09:59	Glenjamin	it unpacks one level of collection
09:59	justin_smith	,`(1 2 3 ~@(range 4 8))
09:59	clojurebot	(1 2 3 4 5 ...)
10:00	hyPiRion	SagiCZ: Assume you pass ((println 10 20) (println 40 50)) and want to evaluate it. How do you do so?
10:00	SagiCZ	using @?
10:00	SagiCZ	i think i get it
10:01	hyPiRion	right, you can do ##(let [a '((println 10 20) (println 40 50))] `(do ~@a))
10:01	lazybot	⇒ (do (println 10 20) (println 40 50))
10:01	SagiCZ	does it unpack map too?
10:01	SagiCZ	,`(list ~@{:red :meat :tasty :stuff)
10:01	clojurebot	#<RuntimeException java.lang.RuntimeException: Unmatched delimiter: )>
10:01	SagiCZ	,`(list ~@{:red :meat :tasty :stuff})
10:01	clojurebot	(clojure.core/list [:tasty :stuff] [:red :meat])
10:02	SagiCZ	O.o
10:02	boxed	I guess the answer is “yes, but…” :P
10:02	hyPiRion	SagiCZ: @ calls seq on its input
10:02	hyPiRion	,(seq {:red :meat :tasty :stuff})
10:02	clojurebot	([:tasty :stuff] [:red :meat])
10:02	SagiCZ	alright. i see
10:04	SagiCZ	lets say i pass a map to a macro, and i want to use one of its values..
10:04	SagiCZ	i would do... `(~passed-in-map :desired-keyword) .. right? it puts there the whole map for some reason
10:04	hyPiRion	right, that's correct
10:04	swi	hmmm... do i need to place function from top to bottom in .clj file to bottom ones can use top one ?
10:05	justin_smith	swi: you can also use declare
10:05	justin_smith	(doc declare)
10:05	clojurebot	"([& names]); defs the supplied var names with no bindings, useful for making forward declarations."
10:05	swi	justin_smith: thanks
10:06	justin_smith	(declare foo) (defn bar [] (use foo somehow ...)) (defn foo ...)
10:06	justin_smith	something like that
10:06	swi	like a func declaration on .h in C :)
10:06	justin_smith	very similar
10:06	swi	got it :)
10:11	jcromartie	so is the REPL broken in the latest ClojureScript or something?
10:11	jcromartie	I can't get this to work
10:11	jcromartie	I can connect
10:11	jcromartie	but nothing evaluates and comes back
10:11	jcromartie	my ClojureScript compiles successfully
10:12	jcromartie	and when I run "lein trampoline cljsbuild repl-listen" and open my app in the browser, it seems to connect
10:12	jcromartie	but there is no communication beyond that
10:13	jcromartie	hm
10:13	jcromartie	maybe I'm wrong… the ClojureScript REPL shows a prompt before it's connected
10:13	jcromartie	so that's kind of misleading
10:15	boxed	jcromartie: no warnings during compile?
10:15	jcromartie	no
10:16	boxed	just making sure because mostly “warnings” in cljs are really super critical errors :P
10:16	jcromartie	hm, seems my repl namespace is not compiled, d'oh… the file wasn't saved because I never M-x make-directory'ed
10:17	SagiCZ	,(for [[vec] [[1 2 3] [4 5 6]]] vec)
10:17	clojurebot	(1 4)
10:17	SagiCZ	what happened here
10:18	jcromartie	SagiCZ: you destructured the first element of each vector in the parent vector
10:18	justin_smith	SagiCZ: you destructured to get the first element of each vector
10:18	llasram	SagiCZ: Your binding from is `[vec]`, which uses destructuring to get just the first element of each
10:18	llasram	heh
10:18	SagiCZ	i wanted to destructure it but it get just the first element of each?
10:19	justin_smith	oh man, I wonder what the record is for "simuiltanious same answer" on this channel
10:19	justin_smith	SagiCZ: I don't know if you wanted to, but that is what you did
10:19	llasram	SagiCZ: If I understand you correctly, you want `vec` instead of `[vec]`
10:19	SagiCZ	i really just wanted to see if destructuring works in for
10:19	john2x	how do I re-use the value returned by the previous expression in the repl?
10:19	jcromartie	john2x: *1
10:19	justin_smith	john2x: 81
10:19	llasram	Aside -- I'd suggest not using a common core function name like `vec` as a local
10:20	justin_smith	err, mis-shift, it's *1 of course
10:20	SagiCZ	2llasram: thanks, good idea
10:20	teslanick	SagiCZ: Of course it does. Anything that has a binding form supports destructuring.
10:20	jcromartie	,(for [v [[1 2 3] [4 5 6]]] v)
10:20	clojurebot	([1 2 3] [4 5 6])
10:20	SagiCZ	2teslanick: ok :)
10:20	jcromartie	ok
10:20	llasram	SagiCZ: What's with the `2`s?
10:20	justin_smith	,(for [[a b c] [[1 2 3] [4 5 6]]] b)
10:20	clojurebot	(2 5)
10:20	john2x	thanks!
10:20	justin_smith	llasram: he hates client nick highlighting, and wants to prevent it, is my best guess
10:21	SagiCZ	llasram: i am really new to IRC and i thought that the "2" would say "TO someone" ... i actually type that by hand i dont know how to easily respond in my client :(
10:21	SagiCZ	so thanks for having difficult nicks!
10:22	Glenjamin	sag[tab]
10:22	Glenjamin	generally clients will expand nicks when you hit tab
10:22	SagiCZ	Glenjamin: ................................ ok that works
10:22	justin_smith	SagiCZ: if you use name followed by : our clients will highlight, and often even notify us if we are in a different window and our nicks come up, the 2 prefix prevents that (at least for some of us)
10:22	_alejandro	What do most people use as their irc clients? Emacs?
10:22	SagiCZ	justin_smith: i see..
10:22	SagiCZ	i use Pidgin
10:23	llasram	SagiCZ: You can private message someone with /msg, but generally to just publicly/inforamlly direct a message to someone, you just use their name, as everyone else is suggesting
10:23	SagiCZ	Glenjamin: thanks really, you are a life saver
10:23	llasram	informally even
10:23	SagiCZ	llasram: so are people bothered by multiple dialogs going at once? is it better to take that private?
10:24	nullptr	ERC here ... if you type the first few letters of a name "Sag" and hit TAB, it completes to "SagiCZ: " which is the common way of addressing someone
10:24	llasram	SagiCZ: Nope
10:24	llasram	The cross-conversation noise is part of the fun
10:24	SagiCZ	nullptr: yep it works! yay
10:25	boxed	SagiCZ: it’s also a good idea to read what other people are talking about, it spreads knowledge and broadens input
10:25	SagiCZ	boxed: yeah i am trying to keep up
10:26	boxed	SagiCZ: this actually goes for things like skype chats at work too.. I find that a lot of people are always trying to talk privately to “not bother” others, but it just ends up everyone has to repeat shit over and over
10:27	SagiCZ	boxed: yeah but chat is a little less annoying than friends trying to yell over each other
10:27	SagiCZ	i have this simple problem, i have a map, and i want to get a list (but not really list, just the elements of it) of pairs, where each pair consist of VALUE KEYWORD .. (in this order)
10:28	justin_smith	,(apply concat (seq {:a 0 :b 1 :c 2}))
10:28	clojurebot	(:c 2 :b 1 :a ...)
10:28	justin_smith	oh, value first
10:28	joegallo	,(apply concat (map reverse {:a 1 :b 2}))
10:28	clojurebot	(2 :b 1 :a)
10:28	justin_smith	,(mapcat reverse (seq {:a 0 :b 1 :c 2}))
10:28	clojurebot	(2 :c 1 :b 0 ...)
10:28	_alejandro	,(map reverse (seq {:a 0 :b 1 :c 2}))
10:28	clojurebot	((2 :c) (1 :b) (0 :a))
10:29	hyPiRion	all these reverse things, hrm.
10:29	joegallo	,(mapcat reverse {:a 0 :b 1 :c 2}) ; no need for the seq, right?
10:29	clojurebot	(2 :c 1 :b 0 ...)
10:29	SagiCZ	thats what i want
10:29	SagiCZ	what solution is best? :D
10:29	justin_smith	joegallo: right, I needed it for concat, and I had just up-arrowed and edited
10:29	boxed	,(for [[k v] (seq {:a 1, :b 2})] [v k])
10:29	clojurebot	([2 :b] [1 :a])
10:29	hyPiRion	(interleave (keys coll) (vals coll))
10:29	joegallo	justin_smith: ah, yeah, i see that now
10:29	boxed	I find that more readable as a python coder :P
10:30	swi	damn.. cheshire spit exception on crappy json :( i hate people that give craped json format :( Things like that is for try/except ?
10:30	justin_smith	joegallo: oh wait, I didn't need it there either :)
10:30	jcromartie	heh ClojureScript is a whole new beast huh
10:30	joegallo	huh, how about that
10:30	SagiCZ	,(do (def m {:a 0 :b 1}) (interleave (keys m) (vals m)))
10:30	clojurebot	(:b 1 :a 0)
10:30	irctc	I'm having some issues trying to copy a whole table from Postgres, I'm using the jdbc copy manager which seems to be working, Clojure kills my database connection halfway through the copy anybody know why? https://gist.github.com/dpick/15dcd98167c099a356c6
10:30	SagiCZ	,(do (def m {:a 0 :b 1}) (interleave (vals m) (keys m)))
10:30	clojurebot	(1 :b 0 :a)
10:31	SagiCZ	boxed: right, it really is more readable
10:31	hyPiRion	yeah, I flipped the order of keys and vals. Whoops.
10:31	justin_smith	swi: but try/catch won't let you access the partially evaluated json
10:33	stuartsierra	irctc: `doall` at line 25 is redundant.
10:33	stuartsierra	`doseq` forces evaluation and always returns nil
10:33	irctc	stuartsieera: yeah I was getting frustrated and trying random things :(
10:34	stuartsierra	irctc: I don't see anything obviously wrong with that code snippet, except that you never close the input stream.
10:34	irctc	stuartsierra: I had it as a with-open which if I understand correctly should close the stream, but either way the connection to postgres gets killed part of the way through the table
10:35	swi	justin_smith: in this particular situation of it's wrong json - there is no usable data for me, but i even can't understand why it's fail
10:36	stuartsierra	irctc: I don't know, then. Maybe a timeout or maximum somewhere in the postgres driver.
10:36	justin_smith	swi: I guess in that case the best you can do is try/catch and maybe log the client and raw string for forensic purposes
10:37	irctc	stuartsierra: alright, thanks for looking
10:38	swi	justin_smith: i see.
10:39	swi	but, how can this http://paste.debian.net/111225/ can lead to " Unexpected character ('}' (code 125)): was expecting double-quote to start field" ?
10:40	stuartsierra	Any suggestions to make sure Leiningen searches only repositories specified in ~/.lein/profiles.clj and nothing else? I've got :repositories ^:replace […] and :mirrors but it's still trying to fetch things from Clojars & Central.
10:42	xsyn	Say I've got a collection of maps
10:42	xsyn	how do I remove those maps that have a nil id
10:42	xsyn	so
10:42	xsyn	({id: 1} {:id nil})
10:43	xsyn	I want ({:id 1}
10:43	xsyn	?
10:43	xsyn	I've tried remove nil?
10:43	justin_smith	,(filter :id '({:id 1} {:id nil} {:id 2}))
10:43	clojurebot	({:id 1} {:id 2})
10:44	xsyn	and I can pass filder a vector of keywords
10:44	xsyn	yay
10:44	xsyn	thanks
10:44	justin_smith	that would also remove things that just didn't have an :id key at all
10:44	mping_	anyone uses liberator ?
10:44	justin_smith	you need an actual predicate if you want something more specific (but non-nil :id of course amounts to :id)
10:44	mping_	having trouble tracing the requests
10:44	john2x	is it possible to specify a Schema to a function's return value? or do I need core.typed for that?
10:45	SagiCZ	how do i convert this (:a :b :c) to this :a :b :c
10:45	justin_smith	SagiCZ: in what context?
10:45	xsyn	justin_smith: magic thank you
10:46	SagiCZ	i need for to spit out single things, not join them into list
10:46	justin_smith	john2x: maybe a post condition if you want to throw an assertion error if the structure is invalid at runtime
10:46	justin_smith	SagiCZ: you can only have a single return value from a given form
10:46	justin_smith	though you can use concat / mapcat to do a layer of flattening if you need that
10:46	SagiCZ	justin_smith: no way to solve that then?
10:47	boxed	,(flatten [[1 2] [3 4]])
10:47	clojurebot	(1 2 3 4)
10:47	justin_smith	like I said, if you are producing a collection, you can remove a layer of structure
10:47	justin_smith	~flatten
10:47	clojurebot	flatten is rarely the right answer. Suppose you need to use a list as your "base type", for example. Usually you only want to flatten a single level, and in that case you're better off with concat. Or, better still, use mapcat to produce a sequence that's shaped right to begin with.
10:47	justin_smith	boxed: better to use apply concat, or mapcat
10:48	SagiCZ	justin_smith: gee i just feel i am doing more things wrong than correct in clojure
10:48	boxed	better why?
10:48	justin_smith	boxed: read what clojurebot said above
10:48	justin_smith	flatten destroys structure
10:48	SagiCZ	,(concat (:a :b :c))
10:48	clojurebot	#<IllegalArgumentException java.lang.IllegalArgumentException: Don't know how to create ISeq from: clojure.lang.Keyword>
10:48	SagiCZ	,(concat '(:a :b :c))
10:48	clojurebot	(:a :b :c)
10:48	SagiCZ	didnt remove any layer
10:49	swi	Hehe, can someone look at my first clojure crap code and say why it's all wrong ? :)
10:50	SagiCZ	swi: yeah i would stand behind you in that line
10:50	llasram	swi: refheap/gist something up and I'd be haappy to comment
10:51	llasram	As I'm sure would others
10:51	swi	http://paste.debian.net/111228/ :D
10:51	SagiCZ	justin_smith: flatten did what i wanted in this case
10:51	llasram	Not one of the suggested paste sites. Rejected.
10:51	llasram	(j/k)
10:51	swi	ok
10:51	llasram	Joking joking!
10:52	swi	https://www.refheap.com/88510 is it better ?
10:52	xsyn	chuckle
10:52	llasram	Well... the syntax highlighting is more familiar, and thus more soothing
10:52	SagiCZ	swi: keep the closing parenthesees on the same line in getQuotes.. neat right? :)
10:53	llasram	swi: Yeah, so trivial level -- standard formatting places parens on the same line as the closing paren of the terminal form
10:54	llasram	swi: And naming convention using kebob-case (aka levitating-snake-case) vs javaCamelCase
10:54	john2x	swi: was just reading this earlier https://github.com/bbatsov/clojure-style-guide
10:54	swi	in fact it's haskelNameingCase in my situation, never learn java
10:55	SagiCZ	llasram: levitating snake case.. :D
10:55	john2x	hmm i guess I'll try out core.typed tomorrow, see how it feels vs Schema.
10:57	llasram	swi: In practice you should only need `declare` if you have e.g. mutually recursive functions. Otherwise it's more conventional->readable to just order your functions in reverse-dependency order
10:58	SagiCZ	What does this mean? "Can't use qualified name as parameter: user/something"
10:59	justin_smith	SagiCZ: note that I said (apply concat ...) not just concat
10:59	justin_smith	or mapcat instead of map
10:59	llasram	swi: The `doseq`s seem a bit out-of-place -- they turn the entire program into a sequence of side-effect-only imperative statements vs a more functional style
10:59	mthvedt	sagicz: usually means you’re syntax-quoting something that you didn’t want to syntax quote
10:59	swi	llasram: i knew that i would be trying to imperate this :D
11:01	swi	llasram: you mean doseq at :50 ? cause at :25 it's a copy-paste from http-kit docs
11:05	SagiCZ	,(cond #(%) :form)
11:05	clojurebot	:form
11:05	SagiCZ	what gets pasted as the parameter to the function?
11:05	justin_smith	SagiCZ: that function never gets called
11:06	SagiCZ	justin_smith: what if i want a function that returns true or false as a result of some complicated test?
11:06	justin_smith	,(cond "anything" :form)
11:06	clojurebot	:form
11:06	teslanick	The last form of cond will always evaluate because there are no conditional statements.
11:06	justin_smith	SagiCZ: than call it
11:06	SagiCZ	,(cond (#(%)) :form)
11:06	clojurebot	#<ArityException clojure.lang.ArityException: Wrong number of args (0) passed to: sandbox/eval77/fn--78>
11:07	SagiCZ	,(cond (#(false)) :form)
11:07	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Boolean cannot be cast to clojure.lang.IFn>
11:07	justin_smith	SagiCZ: what are you trying to do?
11:08	SagiCZ	justin_smith: i am writing this complicated macro and i dont thing it was a good idea in the beginning.
11:08	justin_smith	,(cond (> 0 1) :wat (> 1 0) :OK)
11:08	clojurebot	:OK
11:08	teslanick	The first rule of macro club is don't write macros.
11:08	SagiCZ	justin_smith: i am almost done, i will paste it and maybe you can have a quick glance
11:09	justin_smith	SagiCZ: if you are trying to write a macro, I hope you at least know about macroexpand
11:09	teslanick	I had a problem in clojure and thought to write a macro. Now I have ~@problems.
11:11	llasram	swi: Got pulled into a meat-space convo... Anyway, I mean both. The point of `doseq` is to run things for side-effects, so any use of it is necessarily a step out of the functional paradigm
11:11	SagiCZ	justin_smith: yeah i do know that :]
11:11	llasram	swi: Also, you don't need the `doall` in `getQuotes` -- randomly de-lazing sequences is not a good habit to get into
11:12	swi	llasram: but getting from http and println - it's sideeffect, doesn it ?
11:13	llasram	GETing from HTTP is IO, but the code is actually that functionally, yielding the result of the request as the return value of the function
11:13	llasram	s,result of,response to,
11:14	llasram	The `println` is only for side-effects, but it'd be be (IMHO) better style to write a functional program which only printed the results you want at the top level
11:15	llasram	(Or made use of Clojure's impurity to debugging print/log things at intermediate points while still yielding values functionally)
11:15	SagiCZ	so this is it.. be harsh.. also it might help if you heard about finite state machines, i am trying to implement some framework for them
11:15	SagiCZ	the macro is almost done, but the last bits when putting together the conditionals are too hard for me
11:15	SagiCZ	https://www.refheap.com/88516
11:16	swi	llasram: so i.e. i need to remove println from function and just return data strcuter that i need to -main, and there make a print loop ?
11:16	llasram	swi: That'd be the style I'd advocate, yes
11:16	llasram	It's easier to extend if you keep as much of your program as possible written in a functional style
11:17	SagiCZ	justin_smith: pasted the macro above
11:18	justin_smith	SagiCZ: you may want to consider condp instead of cond
11:18	justin_smith	(doc condp)
11:18	clojurebot	"([pred expr & clauses]); Takes a binary predicate, an expression, and a set of clauses. Each clause can take the form of either: test-expr result-expr test-expr :>> result-fn Note :>> is an ordinary keyword. For each clause, (pred test-expr expr) is evaluated. If it returns logical true, the clause is a match. If a binary clause matches, the result-expr is returned, if a ternary clause matches, its result-fn, which m
11:19	SagiCZ	(doc-for-simple-people condp)
11:19	justin_smith	,(condp > 1 0 :wat 1 :umm 2 :OK 3 :huh)
11:19	clojurebot	:OK
11:20	swi	em... seems like need to rest, can even figure out how to do print loop :D
11:20	justin_smith	it's harder to read as a one liner, the first two args are special, the rest are taken as pairs
11:20	swi	s/can/can't/
11:20	justin_smith	SagiCZ: so in your cace (condp = cmd :condensation (water r) :depositation (ice r) ...
11:21	SagiCZ	justin_smith: i dont think this is what i need.. the conditions for each transition may be arbitraly complicated possibly with some heavy calculations.. i use simple keywords in my example
11:21	justin_smith	though I think it would require taking some stuff out of the cond
11:21	justin_smith	OK
11:21	SagiCZ	so i want to pass a function that computes a boolean value, if the transition is possible
11:22	swi	llasram: thanks a lot for help :)
11:22	clojurebot	Huh?
11:22	justin_smith	SagiCZ: well, for future reference, you can make repetitive cond blocks clearer with condp sometimes
11:22	llasram	swi: np!
11:22	SagiCZ	justin_smith: yeah it seems handy
11:23	justin_smith	SagiCZ: so what is it in the definition of fsm that requires it to be a macro?
11:25	justin_smith	SagiCZ: in the macroexpansion, you have things like [[user/cmd & user/r]]
11:26	justin_smith	this is something ` does, for heigene, but it messes up the creation of local bindings
11:26	justin_smith	are you sure you want to use syntax quote on the binding vector, and not just normal quote?
11:28	justin_smith	similar issue with commands in the top level fn
11:29	justin_smith	what you may want is commands#
11:29	justin_smith	which is a shortcut for using gensym to make a binding
11:33	llasram	I'm pretty sure they don't actually want a macro
11:34	justin_smith	llasram: yeah, that was my suspicion as well
11:34	justin_smith	it is clearly a learning exercise
11:35	Glenjamin	http://www.shouldthisbeamacro.com/
11:35	justin_smith	heh
11:35	justin_smith	<h1>NO</h1>
11:36	Glenjamin	ls
11:36	lazybot	bin boot etc home lib lib64 media root run srv sys tmp usr
11:36	Glenjamin	my favourite bot joke
11:36	justin_smith	ls
11:36	lazybot	boot etc home lib64 media mnt opt proc run sbin srv tmp usr var
11:36	justin_smith	it also really calls ls, and returns a random selection of the output
11:37	SagiCZ	justin_smith: so are you saying i should use a function? i just want to simpify the calls and not having to repeat the code
11:37	justin_smith	https://github.com/Raynes/lazybot/blob/master/src/lazybot/plugins/unix_jokes.clj
11:37	justin_smith	SagiCZ: then write a working function first, then make the syntax macro call that function
11:37	justin_smith	it's much easier that way
11:38	justin_smith	the syntax alteration and the functionality are two separate concerns, it's easier to address one at a time
11:38	SagiCZ	justin_smith: oh like that! i see what you mean.. so there is no reason to do anything else in macro than syntax alteration
11:38	justin_smith	right
11:39	SagiCZ	thanks
11:39	mthvedt	pwd
11:39	lazybot	#clojure
11:40	justin_smith	mutt
11:40	lazybot	Woof!
11:40	justin_smith	lol
11:40	justin_smith	echo ,(+ 1 1)
11:40	lazybot	,(+ 1 1)
11:40	clojurebot	2
11:40	justin_smith	ROFL
11:40	justin_smith	the bots used to ignore one another...
11:41	nobodyzzz	ls ect
11:41	lazybot	bin boot dev etc lib64 lost+found media mnt run sbin srv tmp var
11:41	nobodyzzz	ls etc
11:41	lazybot	home lib lost+found media proc run srv sys tmp var
11:41	SagiCZ	echo ,(println "hoe")
11:41	lazybot	,(println "hoe")
11:41	clojurebot	hoe\n
11:41	nobodyzzz	ls etc/home
11:41	lazybot	bin boot etc home lib lib64 lost+found media opt proc run srv usr var
11:41	mthvedt	echo ,(println “mutt”)
11:41	lazybot	,(println “mutt”)
11:41	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: “mutt” in this context, compiling:(NO_SOURCE_PATH:0:0)>
11:41	nobodyzzz	ls home
11:41	lazybot	bin boot etc home lib mnt proc root run sbin srv tmp
11:41	mthvedt	boo
11:41	mthvedt	that doesn’t even make sense
11:41	swi	Goodbye :)
11:42	justin_smith	nobodyzzz: you can see from the source I pasted, it ignores the args to ls
11:42	justin_smith	mthvedt: why did you feed "smartquotes" to the bot?
11:42	llasram	SagiCZ: For what you're trying to do, I believe you can get the same effect more clearly by just using higher-order functions
11:42	justin_smith	echo ,(println "mutt")
11:42	lazybot	,(println "mutt")
11:42	clojurebot	mutt\n
11:42	nobodyzzz	echo nice
11:42	lazybot	nice
11:42	justin_smith	echo ,(print "mutt")
11:42	lazybot	,(print "mutt")
11:42	clojurebot	mutt
11:42	justin_smith	oh, the final step of the recursion is missing
11:43	llasram	I think the bots ignore each other after... gfredericks? hyPiRion? figured out that cross-bot mutual quine
11:43	llasram	Or rather, lazybot ignores clojurebot bot
11:43	mthvedt	dang, that was going to be my next suggestion
11:43	justin_smith	llasram: right, but I just make lazybot trigger clojurebot
11:43	justin_smith	I thought it was a mutual ignore too, clearly it is just one way
11:45	gfredericks	okay okay okay so transit
11:46	gfredericks	has some edge-case ambiguity wrt json interpretation?
11:46	gfredericks	did anybody ask about this yet?
11:50	gfredericks	rhickey said that "all json is valid transit"; and I can't see how that isn't an ambiguity
11:51	justin_smith	gfredericks: got an example somewhere?
11:51	Glenjamin	that doesn't seem strictly true
11:51	gfredericks	justin_smith: no, I haven't played with it yet, it just seems logically necessary if you're encoding one thing as another
11:51	Glenjamin	well, i guess {"a": "~a"} is still valid transit, but it's not very useful
11:51	Glenjamin	since the transit meaning differs from the json meaning
11:53	gfredericks	if my json happens to look like transit, it'll get processed differently by accident
11:53	gfredericks	probably an expedient compromise and not likely to be a problem, I just wanted to make sure I understood
11:53	SagiCZ	llasram: what do you mean by using higher-order functions? you mean disregard the whole machine function?
11:56	justin_smith	SagiCZ: btw, one of the more awesome things in clojure is a massive macro wrapping a state machine: core.async
11:56	bbloom	CookedGr1phon: did writing your own `locking macro fix it?
11:57	llasram	SagiCZ: The code invoking `fsm` is already passing in functions for checking each possible state transition. `fsm` can just be a function which executes on state data + the checking-functions
11:57	llasram	SagiCZ: Instead of generating code which uses `letfn` to generate functions, you just iterate over all the states, calling a function which itself returns accepts the state-description and returns a function for that state
11:58	llasram	SagiCZ: `fsm` itself then just returns the function composing those state-functions into the final state-machine
11:58	SagiCZ	llasram: " calling a function which itself returns accepts the state-description and returns a function for that state"
11:59	SagiCZ	llasram: ?
11:59	llasram	er, remove "itself returns"
11:59	benkay	<justin_smith> benkay: any reason you need to create the uberjar on the micro? why not a more powerful machine dedicated to doing the builds? // because i am a cheap bastard
12:00	benkay	also because - hey, that's a neat standard for "is your stack lightweight?": build and run app on micro
12:00	SagiCZ	llasram: would i still need trampoline then?
12:01	benkay	this micro is now running postgres, docker, datomic, the app uberjar and occasionally falls over when building new uberjars.
12:01	justin_smith	benkay: I either use jenkins on a dedicated box, or just build locally
12:01	CookedGr1phon	bbloom: sort of, moving the monitor-enter outside the try block seems to have fixed it in some instances, but others are still failing
12:01	benkay	so i think it's reasonably lightweight.
12:01	benkay	justin_smith: yeah, i've been wanting to do builds locally for a bit now, but that'll entail rewriting the deploy scripts more than i'm in the mood to at the moment.
12:01	H4ns	i have a beginner java interop message: i need to use a few static fields of a java class. is there a way to import them somehow so that i don't have to use the.long.class.name/FIELD_NAME everywhere?
12:01	CookedGr1phon	bbloom: but I've just noticed I actually have the android build of clojure plus vanilla clojure included in my deps, so that might be affecting things, will remove that and try again
12:02	justin_smith	I don't know, there isn't much reasonably lightweight about clojure compared to anything else i have used seriously
12:02	H4ns	s/message/question/, sorry
12:02	benkay	justin_smith: tell me about it.
12:02	benkay	i still can't use clojure for scripting :(
12:02	justin_smith	H4ns: (import long.class name) name/FIELD_NAME
12:03	H4ns	justin_smith: thank you!
12:03	bbloom	CookedGr1phon: i'd file an issue here: https://code.google.com/p/android/issues/list be sure to include the generated byte code
12:03	llasram	SagiCZ: I don't think so, because you wouldn't have actual mutually recursive references to the state functions. You'd probably end up having the function composed by `fsm` "manually" trampoline between states by their keyword-names
12:05	justin_smith	H4ns: correcting myself: (import java.io.File) not (import java.io File)
12:05	SagiCZ	llasram: I will try to do that
12:05	justin_smith	the former works
12:05	H4ns	justin_smith: it was the "import" bit that i was missing, i've figured out how to put it into my ns declaration. thanks!
12:05	justin_smith	np
12:05	SagiCZ	,(+ 2 5)
12:05	clojurebot	7
12:05	justin_smith	you can also use :import in the ns form
12:05	SagiCZ	,(println "hot dog")
12:05	clojurebot	hot dog\n
12:06	H4ns	justin_smith: that's what i do now :)
12:06	justin_smith	H4ns: ahh, and my invalid syntax is actually usable for the ns form, if you look at (doc ns)
12:06	justin_smith	(doc ns)
12:06	clojurebot	"([name docstring? attr-map? references]); Sets ns* to the namespace named by name (unevaluated), creating it if needed. references can be zero or more of: (:refer-clojure ...) (:require ...) (:use ...) (:import ...) (:load ...) (:gen-class) with the syntax of refer-clojure/require/use/import/load/gen-class respectively, except the arguments are unevaluated and need not be quoted. (:gen-class ...), when supplied, de
12:06	justin_smith	$doc ns
12:09	llasram	,(import '[java.io File])
12:09	clojurebot	java.io.File
12:10	clgv	&(doc ns)
12:10	lazybot	⇒ "Macro ([name docstring? attr-map? references]); Sets ns* to the namespace named by name (unevaluated), creating it if needed. references can be zero or more of: (:refer-clojure ...) (:require ...) (:use ...) (:import ...) (:load ...) (:gen-class) with the syntax o... https://www.refheap.com/88517
12:12	justin_smith	(inc clgv)
12:12	lazybot	⇒ 24
12:12	justin_smith	that's what I wanted
12:13	justin_smith	(inc llasram)
12:13	lazybot	⇒ 28
12:13	justin_smith	and that too
12:13	seangrove	I can't seem to get xml-zip and xml-> to work
12:14	seangrove	(xml-filter/xml-> (zip/xml-zip (:response rr)) (xml-filter/tag= :Envelope)) => ()
12:14	clgv	:)
12:14	seangrove	Just looking to see if that looks like the vaguely correct syntax
12:15	devn	Anyone here have any Azul experience?
12:16	devn	Specifically, Zing.
12:18	justin_smith	devn: with a name like that I would be afraid that after some period of attempting to use the API, they would reveal the punchline "lol you actually tried to use this! joke's on you! ZING"
12:18	devn	heh
12:19	justin_smith	in all seriousness, I know nothing about azul zing
12:19	devn	It sounds cool. I remember Rich talking about running his ants simulation on one of the Azul systems.
12:20	devn	Which makes me curious to know whether that required Zing
12:22	jgt	Hello everyone
12:22	jgt	I’m new to Clojure, and was tinkering with the language; writing some small functions, etc.
12:23	jgt	and I’m wondering, why does my cond example work, but my case example does not? http://pastebin.com/P8mZFW7d
12:24	llasram	jgt: The case dispatch values are unevaluted Clojure literals
12:24	llasram	So that case statement is using the symbols, not the classes they resolve to
12:26	jgt	llasram: Should I use condp instead?
12:26	jgt	looks as though condp does evaluation
12:26	llasram	jgt: condp instance? is probably better, for a few reasons
12:27	llasram	It's pretty common to have a utility macro around `case` which evals the dispatch forms, but be aware that class hash values are not stable across JVM runs, so using that with class dispatch will break under AOT
12:28	hiredman	llasram: I think that may not be as common as you think
12:29	llasram	jgt: Mine http://blog.platypope.org/2011/10/15/clojure-case-is-not-for-you/ which include a link to cemerick's
12:29	llasram	hiredman: I use it relatively frequently for dispatching on e.g. Java static final integer constants
12:29	llasram	And have a variation of it for dispatching on Java enums which I also use relatively frequently
12:33	CookedGr1phon	bbloom: seems that I've actually fixed it, not getting verify errors any more. The issue was actually that I was loading in two copies of clojure core, one of which had my change, the other didn't
12:35	bbloom	CookedGr1phon: ah, in that case may i suggest a patch on clojure's JIRA? :-)
12:36	CookedGr1phon	You may, and I shall. Just going to do a bit more testing around, see if I can find any other situations where it still gives a verify error
12:36	CookedGr1phon	but all clojure's tests pass no problem
12:40	johnwalker	how do you specify that dependencies are only required for testing?
12:41	johnwalker	oh derp, you just use a testing profile
12:42	hcumberdale	if I get a list back from a fn and I want the result not to be used as a list, instead it should be plain values
12:42	hcumberdale	,(print '(1 2 3))
12:42	clojurebot	(1 2 3)
12:43	justin_smith	hcumberdale: then do something with the individual values
12:43	justin_smith	,(doseq [i '(1 2 3)] (print i))
12:43	clojurebot	123
12:43	hcumberdale	justin_smith: a list of strings is returned
12:43	justin_smith	OK, clojure has plenty of ways of acting on each element of a list
12:43	hcumberdale	,(print "a" "b" "c")
12:43	clojurebot	a b c
12:43	justin_smith	you can use clojure.string/join to make one string
12:44	hcumberdale	,(print '("a" "b" "c"))
12:44	clojurebot	(a b c)
12:44	justin_smith	,(apply print '(1 2 3)) is another option
12:44	clojurebot	1 2 3
12:44	hcumberdale	yeah! I solved nearly all such cases with apply
12:44	justin_smith	,(clojure.string/join " " '("these" "are" "strings"))
12:44	clojurebot	"these are strings"
12:48	hcumberdale	trying to use loom.graph/add-edges graph ["x" (fn that returns list of strings)]
12:48	hcumberdale	ends up with an edge: "x" '("a" "b" "c")
12:49	justin_smith	try (apply loom.graph/add-edges graph "x" (fn that returns list of strings))
12:51	hcumberdale	justin_smith: results in scary output with some kind of alphabet in the nodeset
12:52	justin_smith	maybe you want (add-edges graph (cons "x" (fn that returns list of strings)))
12:53	justin_smith	https://github.com/aysylu/loom/blob/master/src/loom/graph.clj#L63 but looking at this, you should be constructing a list of 3 element lists
12:54	justin_smith	or 2 element
13:06	ChouLin	/m Hi I'm trying to to this: ( loop a file -> split each line into words -> store word-count in a hashmap); here's how I scope with a single line:
13:06	ChouLin	(defn get-word-counts [line]
13:06	ChouLin	(reduce
13:06	ChouLin	(fn [words w] (assoc words w (inc (words w 0)))) {}
13:06	ChouLin	(str/split (str/lower-case line) #"\W+")))
13:06	ChouLin
13:06	ChouLin
13:10	justin_smith	ChouLin: please use refheap or gist for multiple lines of code
13:12	justin_smith	,(reduce (fn [words w] (update-in words [w] (fnil inc 0))) {} ["a" "a" "b"])
13:12	clojurebot	{"b" 1, "a" 2}
13:13	sigmavirus24	hey tbaldridge I have a couple questions about transit-python, would a PM be more appropriate?
13:14	tbaldridge	sure
13:20	augustl	I have '("x" "a" "b"), is there anything in core for validating that '("x" "a" "b" "f" "g") starts with the first sequence and get '("b" "f" "g") back?
13:20	augustl	err, get '("f" "g") back I mean
13:23	Glenjamin	i don't think there's one function that will do just that
13:23	Glenjamin	(= a (take b (count a)) will do the first bit
13:23	Glenjamin	erm, reverse those take arguments
13:25	Glenjamin	,(defn leftovers [prefix coll] (if (= prefix (take (count prefix) coll) (drop (count prefix) coll)))
13:25	clojurebot	#<RuntimeException java.lang.RuntimeException: EOF while reading>
13:25	Glenjamin	,(defn leftovers [prefix coll] (if (= prefix (take (count prefix) coll)) (drop (count prefix) coll)))
13:25	clojurebot	#'sandbox/leftovers
13:25	Glenjamin	,(leftovers '(a b c) '(a b c d e f))
13:25	clojurebot	(d e f)
13:26	justin_smith	,((fn [[p & ps :as pattern] [i & is :as input]] (cond (empty? pattern) input (= p i) (recur ps is) :else false)) ["x" "a" "b"] ["x" "a" "b" "f" "g"])
13:26	clojurebot	("f" "g")
13:43	mdrogalis	A wild licensing debate appears! https://twitter.com/bodil/status/491960370521976832
13:45	SegFaultAX	Oh Bodil.
13:46	mdrogalis	I actually didn't realize it was her before I posted that - since she changed her avatar.
13:47	tbaldridge	ah yes, the never ending battle of personal ideals vs legal realities....
13:48	mdrogalis	I'm actually completely fine with Datomic being closed source. That obviously took an amazing amount of work, and Cognitect deserves every dime they make off it.
13:50	ToxicFrog	mdrogalis: I'm not, but I also think that everything should be at least visible-source even if it's not released under a FOSS license, so.
13:50	Glenjamin	there are examples of dual-licenced databases
13:51	mdrogalis	ToxicFrog: Fair argument.
13:51	Glenjamin	being able to fix the tools you use is nice, but not a necessary feature
13:51	mdrogalis	So, is the issue that Cognitect is only taking contributions via Jira as usual for Transit, or are they not taking anything period?
13:52	Glenjamin	"Because transit is incorporated into products and client projects, we prefer to do development internally and are not accepting pull requests or patches."
13:53	mdrogalis	Oh, well that's gross.
13:54	mdrogalis	At a minimum, continue development in house and progressively merge the "open source" version back in with the main line or something.
13:54	SagiCZ	(dotime [_ 10000] (println "o"))
13:55	SagiCZ	,(dotimes [_ 10000] (println "o"))
13:55	clojurebot	o\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no\no...
13:55	tbaldridge	issues can be created via github, Transit doesn't use JIRA
13:56	mdrogalis	tbaldridge: What's the point if they'll never be acted on?
13:56	llasram	tbaldridge: What "legal realities"?
13:57	tbaldridge	But here's the legal part of it (as far as I understand it). Let's say I go and create a product and sell it to some company. That product goes horribly wrong, and nukes somebody's server, they come to sue me. I can't turn around and say "welp, mdrogalis wrote that PR so go sue him". Nope if I accept a PR I accept the right to be sued for that code.
13:57	llasram	...
13:57	tbaldridge	mdrogalis: they'll be acted on, they already have...
13:57	boxed	don’t operate in Common Law countries :P
13:58	tbaldridge	mdrogalis: https://github.com/cognitect/transit-js/pulls?direction=desc&page=1&sort=created&state=closed
13:58	tbaldridge	Notice, the PR wasn't used, but the feedback was.
13:58	mdrogalis	tbaldridge: I'm not being saracastic by the way. I assumed it worked the same way issues were working with other Clojure Github projects
13:58	bbloom	tbaldridge: presumably that's the point of the "absolutely no warentee" startup messages
13:58	llasram	I'm glad most of the word has the paranoia dial set somewhere below eleven
13:58	llasram	s,word,world,
14:00	mdrogalis	Bottom line though - not submitting user contributions puts me off a lot.
14:00	mdrogalis	Certainly not to blame anyone.
14:00	tbaldridge	bbloom: presumably being the key word....
14:01	bbloom	tbaldridge: shrug lawyers
14:01	tbaldridge	and what can and cannot be done may be trumped by a contract signed by two companies.
14:01	bbloom	the problem is that people talk to their council, who recommends MAXIMUM CAUTION, and they follow counsil's instructions
14:01	mdrogalis	Yeah, integrating it into client work was a no-no IMO.
14:02	bbloom	but in reality, you need to weigh risk vs reward
14:02	bbloom	and at some point, once you fall below your risk tollerence, you need to tell your counsil to bugger off
14:02	bbloom	council*
14:02	bbloom	b/c somebody can always sue you
14:02	bbloom	doesn't mean they'll win...
14:08	bbloom	tbaldridge: but sorry, no reason to take it out on you :-P
14:09	tbaldridge	bbloom: nah, I agree with most opinions of this stuff, and I think most people agree, the world would be better with less of this sort of stuff.
14:10	tbaldridge	But I've worked with enough larger companies to know that this stuff has to be taken seriously.
14:10	tbaldridge	For that matter when I worked with MS they outright banned GPL software on their servers, and frowned on LGPL. And that wasn't even a product they were selling, it was a internal service.
14:11	mdrogalis	tbaldridge: Yeah, apologies. I know you didn't have any say in that choice.
14:11	bbloom	well the GPL is a whole other discussion
14:11	bbloom	but, speaking of MS:
14:11	bbloom	https://github.com/Microsoft/TypeScript/pulls?direction=desc&page=1&sort=created&state=open
14:11	AimHere	MS did have a bee in its bonnet about the GPL circa 2000ish or so
14:11	bbloom	:-P
14:11	AimHere	The Halloween documents and all that
14:11	tbaldridge	bbloom: ;-)
14:11	mdrogalis	Bee in its bonnet lol
14:11	mdrogalis	Havent heard that in a while
14:14	seancorfield	tbaldridge: when I worked at Adobe, they had a similar stance on GPL (and on LGPL)
14:15	tbaldridge	hopefully someday all this stuff will get tested in court, but until then most of these licenses are just words and theory
14:15	AimHere	GPL has been to court lots of times
14:15	seancorfield	I got dragged into a software license audit - for an internal project - and the upshot was we had to go to a FOSS project we wanted to use and ask if they would consider changing the license they used (from LGPL in that case) so we could actually leverage their project...
14:16	justin_smith	seancorfield: given that the LGPL is a license to modify or redistribute, you also had the option of relicensing your own code, in order to be able to access that license
14:16	seancorfield	and it doesn't help that the US attitude to software licenses seems to be at odds with the rest of the world so folks in the FOSS community get all bent out of shape when a discussion like this one (Bodil's tweet) start up
14:17	seancorfield	justin_smith: it was not for a distributable project, nor was it for open source usage
14:17	andrzejsliwa	Hi guys, short question... how to disable appearing of java icon in dock of macosx when running leiningen?
14:18	johnwalker	which bodil tweet? ;)
14:18	andrzejsliwa	I found :jvm-opts ["-Dapple.awt.UIElement=true"]
14:18	justin_smith	seancorfield: if you weren't distributing, why did you need a license to copy and redistribute?
14:18	Bodil	This discussion amuses me tremendously.
14:18	andrzejsliwa	but this disable icon only for jvm of cider
14:18	seancorfield	the LGPL project in question involved code generation and legal counsel were not happy with questions around how LGPL affected the generated code, which blended in parts of the LGPL project, and was then incorporated into our internal project
14:19	seancorfield	justin_smith: IANAL - but the lawyers had issues
14:19	Glenjamin	I suppose the open source transits could be treated as forks which never merge back upstream
14:19	seancorfield	hey, who said Bodil three times? :)
14:19	_alejandro	andrzejsliwa: how are you running your app?
14:19	algernon	"lawyers had issues" - the world would be so much better if lawyers were bug free.
14:19	andrzejsliwa	I just run lein
14:20	Bodil	The GPL makes it hard for people to exploit free software to build their proprietary software. That's a feature. 😁
14:20	andrzejsliwa	and Java icon appearing in dock... for time of running lein
14:20	seancorfield	licensing issues are not about common sense or rationality in a lot of cases - legal concerns are often on a higher plane :)
14:20	technomancy	protip: you can sue anyone whether or not you have a case against them.
14:20	_alejandro	andrzejsliwa: what happens if you do `lein trampoline run`?
14:20	AimHere	Is clojure's GPL-incompatibility a feature too?
14:21	seancorfield	Bodil: indeed, and GPL is an important license for that reason - but no one should be surprised when large US corporations then object to using software that is GPL :)
14:21	tbaldridge	Bodil: assuming said exploitation is undesirable...
14:21	Bodil	seancorfield: Obvious
14:21	andrzejsliwa	icon popup... and disapear after process is stopped
14:21	seancorfield	(even for internal projects with no redistirbution)
14:21	Bodil	Obviously*
14:21	technomancy	https://twitter.com/coda/status/428944437884891136
14:21	Bodil	tbaldridge: If so, one probably shouldn't be using the GPL. 😊
14:22	seancorfield	Getting dragged into those license audits was a particularly icky part of my career - I felt dirty afterward! :)
14:23	seancorfield	hahaha... love this: https://twitter.com/al3x/status/428990149897093120 (from that same thread)
14:23	Bodil	I quit a few enterprise jobs over bad attitudes towards free software, tbh.
14:23	technomancy	seancorfield: nice
14:24	Bodil	And I know a lot of enterprise consultants who hate the GPL because of being asked to deal with these things.
14:24	seancorfield	Bodil: the difference between Macromedia's attitude and Adobe's attitude was stark - I enjoyed my six years at Macromedia, not so much my one year at Adobe after they purchased us
14:24	_alejandro	andrzejsliwa: sorry no clue.
14:24	seancorfield	(and I did quit Adobe)
14:24	Bodil	seancorfield: I've heard a few people echo that sentiment. Not surprised. 😊
14:24	technomancy	seancorfield: does Adobe just classify free software advocates as "those crazy folks who always complain about flash?" =)
14:24	_alejandro	did you do anything to make it show up? I just realized I've never had the icon pop up at all
14:25	technomancy	at least back then
14:25	justin_smith	_alejandro: I know that certain libs make the icon show up (for example ring, because it loads some classes in swing)
14:25	justin_smith	(specifically the lein ring plugin)
14:26	seancorfield	technomancy: the discussion around Flash was rarely a rational one IMO... and I'll leave it at that...
14:26	technomancy	heh
14:26	justin_smith	_alejandro: iirc if you don't load the swing classes, you won't get that icon
14:26	seancorfield	(I worked on the ActionScript 3 / Flash Player 9 test suite for a few months during a transition in roles)
14:26	justin_smith	maybe I should direct that at andrzejsliwa
14:27	_alejandro	justin_smith: yeah, I think they were looking for how to suppress it
14:27	justin_smith	right, and the trick is to make sure nobody loads the swing classes
14:27	justin_smith	it's some annoying initializer in swing that creates that icon
14:29	_alejandro	justin_smith: although fwiw, I don't get the icon when I run `lein ring server` in one of my apps
14:29	justin_smith	interesting, they may have changed this since I stopped using OSX
14:30	justin_smith	which was a while ago
14:30	andrzejsliwa	in my profile i have only cider-repl
14:30	andrzejsliwa	project is just blank lein repo
14:31	andrzejsliwa	even without project... when running lein icon appear
14:31	johnwalker	is the mozilla public license compatible with clojure libraries?
14:31	andrzejsliwa	on 1.7 and 1.6 everything is fine
14:31	OscarZ	what are the most popular dev tools for clojure nowadays?
14:32	justin_smith	OscarZ: lein is still "the way" to handle deps and set up the classpath
14:33	technomancy	sed is making a comeback
14:33	justin_smith	I think more of us are using emacs than any other editor
14:33	OscarZ	yes, i ment more like editor / ide ..
14:33	_alejandro	OscarZ: emacs + CIDER
14:34	justin_smith	fireplace + vim is popular too (but not as popular)
14:34	OscarZ	i dont like vim :)
14:34	andrzejsliwa	there is lighttable and plugin for intellij, sublime etc
14:34	andrzejsliwa	but true, most people using emacs
14:35	llasram	I don't know that I'd say "most people"
14:35	SagiCZ	,(def m [{:a 0 :b 1} {:c 5 :d 6}])
14:35	clojurebot	#'sandbox/m
14:36	justin_smith	llasram: more people use emacs than any other single editor I am sure, but I don't know if the emacs usage outnumbers everything else combined - do we have numbers on it?
14:36	SagiCZ	,(map #(:a %) [{:a 0 :b 1} {:a 5 :b 6}]
14:36	clojurebot	#<RuntimeException java.lang.RuntimeException: EOF while reading>
14:36	SagiCZ	,(map #(:a %) [{:a 0 :b 1} {:a 5 :b 6}])
14:36	clojurebot	(0 5)
14:37	justin_smith	SagiCZ: #(:a %) is the same as :a
14:37	justin_smith	,(map :a [{:a 0 :b 1} {:a 5 :b 6}])
14:37	clojurebot	(0 5)
14:37	technomancy	llasram: http://cemerick.com/2013/11/18/results-of-the-2013-state-of-clojure-clojurescript-survey/ "more than half" last year
14:37	llasram	Looks like in cemerick's last "State of Clojure" survey, Emacs was just under 50%
14:37	SagiCZ	justin_smith: thank you
14:37	llasram	technomancy: Yeah -- took me a minute to drill down to the actual data, which is over in this "polldaddy" thing
14:37	justin_smith	SagiCZ: np
14:38	technomancy	istr cemerick saying that was the last survey he planned on running
14:38	llasram	Awww
14:38	technomancy	maybe?
14:38	technomancy	anyway, might be a good time to find a successor
14:38	llasram	We've got a few months
14:39	SagiCZ	is there any catch with map on nested maps?
14:40	justin_smith	llasram: those emacs answers are separated between cider+nrepl, inferior lisp, slime -- if you combine those it edges over 50% using emacs
14:40	SagiCZ	,(map :a [{:a 0 :b {:x 5 :y 4}} {:a 5 :b {:x 5 :y 4}}])
14:40	clojurebot	(0 5)
14:40	llasram	justin_smith: Oh, my eye glided right over that. Good point
14:41	llasram	SagiCZ: What sort of catch would there be?
14:42	SagiCZ	llasram: i dont understand it.. the (map :keyword vector-of-maps) works fine on toy examples but in my case it returnes the whole vector of maps unchanged
14:43	andrzejsliwa	ok I solved problem by:
14:43	andrzejsliwa	export JVM_OPTS="-Dapple.awt.UIElement=true"
14:43	andrzejsliwa	export LEIN_JVM_OPTS=$JVM_OPTS
14:43	justin_smith	SagiCZ: that makes no sense
14:43	SagiCZ	llasram: but (:keyword (first vector-of-maps)) works fine
14:44	llasram	SagiCZ: Then in your non-toy case you have a bug :-)
14:44	SagiCZ	llasram: yup
14:48	SagiCZ	,(map :name [{:name :water :behavior 0} {:name :ice :behavior 2}])
14:48	clojurebot	(:water :ice)
14:48	SagiCZ	wow!
14:48	SagiCZ	thats a bug in my repl!
14:48	troydm	how is that a bug?
14:48	SagiCZ	yep.. restarded repl and it works fine now
14:49	SagiCZ	i guess i messed up something with my endless experiments :>
14:49	SagiCZ	troydm: it was returning something else in my REPL
14:51	llasram	Re-defined `map` somehow maybe?
14:51	llasram	,(let [map {}] (map :whatever [{:whatever :huh?}]))
14:51	clojurebot	[{:whatever :huh?}]
14:51	SagiCZ	llasram: yeah that would be it.. i ignored the warnings!
14:54	SagiCZ	is there an easier way to do this?
14:54	SagiCZ	(zipmap (map foo1 coll) (map foo2 coll))
14:59	justin_smith	(into {} (map (juxt foo1 foo2) coll))
14:59	llasram	SagiCZ: Maybe (into {} (map (juxt foo1 foo2) coll))
14:59	llasram	justin_smith: jinx!
14:59	justin_smith	indeed
15:00	justin_smith	the into version will perform better, for what it's worth
15:00	justin_smith	and I think its a little more clear
15:02	SagiCZ	thanks
15:06	SagiCZ	,m
15:06	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: m in this context, compiling:(NO_SOURCE_PATH:0:0)>
15:39	SagiCZ	can i create anonymous function with variable amount of parameters? like this (#(...?...) can call with some arguments)
15:39	bbloom	,(#(count %&) 1 2 3)
15:40	clojurebot	3
15:40	SagiCZ	,(#(println %&) :hello :this :is :dog)
15:40	clojurebot	(:hello :this :is :dog)\n
15:40	SagiCZ	bbloom: thank you sir
15:40	bbloom	SagiCZ: try apply in that case
15:40	bbloom	,(#(apply println %&) :hello :this :is :dog)
15:40	clojurebot	:hello :this :is :dog\n
15:41	bbloom	well, or just use println directly... i guess you were just looking to see what %& was
15:41	SagiCZ	wait what was wrong with my approach
15:41	bbloom	SagiCZ: nothing, ignore me
15:42	SagiCZ	bbloom: ok then
15:43	SagiCZ	bbloom: what if someone is passing an argument to my anonymous function but i dont want to use it? #(domystuff (comment %)) ?
15:43	bbloom	SagiCZ: just use fn
15:44	SagiCZ	(fn [&] (do my stuff)) ?
15:45	teslanick	(fn [_] (...))
15:45	bbloom	or (fn [& _] (...))
15:45	teslanick	Underbar is idiomatic for "I don't care what this argument is."
15:45	justin_smith	bbloom's version with & _ takes any number of args, and ignores them all (unless you decide to be silly and use the _ binding)
15:45	SagiCZ	(fn [_] (...)) would accept one parameter only right?
15:46	teslanick	Yes
15:46	SagiCZ	alright thanks :)
15:46	justin_smith	yeah, & _ ignores any number of args
15:46	enn	What is the equality function used to determine set membership?
15:46	justin_smith	enn: =
15:46	enn	justin_smith: thank you
15:46	justin_smith	np
15:47	teslanick	,(= #{ :enn :justin_smith } #{ :justin_smith :enn })
15:47	clojurebot	true
15:47	justin_smith	,(contains? #{[1 2 3]} '(1 2 3)) that means that sets do structural equality, like = does
15:47	clojurebot	true
15:47	justin_smith	so things can be equal even if they are not the same class
15:50	amontalenti	I have a situation with lein where running "lein deploy" results in this exception: Error: Could not find or load main class clojure.main // Compilation failed: Subprocess failed. Strangely, if I run "lein compile" and "lein jar" first, then the "lein deploy" succeeds.
15:51	justin_smith	amontalenti: any reason to run lein jar rather than lein uberjar?
15:51	amontalenti	justin_smith, prepping for a clojars deployment, uberjar is not appropriate for that, right?
15:52	justin_smith	oh, right
15:53	justin_smith	how are you invoking lein deploy?
15:53	amontalenti	justin_smith, "lein deploy clojars"
15:54	Fare	hi
15:54	justin_smith	amontalenti: hmm, I use lein push for that
15:54	Fare	in the documentation for defmulti, I see room for only one dispatch function — can I dispatch on multiple arguments, just with one dispatch function?
15:57	Fare	oh, the function takes all the parameters, eh?
15:57	tbaldridge	Fare: yes it takes all params
15:58	SagiCZ	hey i need something like "some" but the "conditional function" should take the elements in coll as parameter
15:58	SagiCZ	(doc some)
15:58	clojurebot	"([pred coll]); Returns the first logical true value of (pred x) for any x in coll, else nil. One common idiom is to use a set as pred, for example this will return :fred if :fred is in the sequence, otherwise nil: (some #{:fred} coll)"
15:58	Fare	how do I deal with [:class1 :class2] hierarchies?
16:00	SagiCZ	,(some (> 5 %) [2 0 4 9])
16:00	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: % in this context, compiling:(NO_SOURCE_PATH:0:0)>
16:01	SagiCZ	,(some #(> 5 %) [2 0 4 9])
16:01	clojurebot	true
16:01	SagiCZ	i need "9" not true
16:03	samflores	SagiCZ filter
16:03	nullptr	,(filter #(> 5 %) [2 0 4 9])
16:03	clojurebot	(2 0 4)
16:03	samflores	,(filter (some #(> % 5) [2 0 4 9]))
16:03	clojurebot	#<ArityException clojure.lang.ArityException: Wrong number of args (1) passed to: core/filter>
16:03	SagiCZ	,(first (filter #(> 5 %) [2 0 4 9]))
16:03	clojurebot	2
16:03	nullptr	,(filter #(> % 5) [2 0 4 9])
16:03	clojurebot	(9)
16:03	samflores	,(filter #(> % 5) [2 0 4 9]))
16:04	clojurebot	(9)
16:04	SagiCZ	,(first (filter #(> % 5) [2 0 4 9]))
16:04	clojurebot	9
16:04	SagiCZ	this is it
16:04	samflores	yep
16:12	SagiCZ	what if i want to return foo1 if its non-nil and return :default when foo1 returned nil? (def foo [] (foo1) :default)
16:12	arrdem	just wrap the whole thing in an or..
16:12	SagiCZ	duh
16:12	SagiCZ	thanks
16:14	justin_smith	SagiCZ: if foo1 is a lookup on a map, get takes an optional third argument
16:14	justin_smith	,(:foo {:bar 0} :not-here)
16:14	clojurebot	:not-here
16:22	SagiCZ	justin_smith: it wasnt a lookup but i was looking if (filter) can default to something.. forgot about OR
16:23	SagiCZ	,(nil? nil)
16:23	clojurebot	true
16:23	SagiCZ	,(not-nil? nil)
16:23	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: not-nil? in this context, compiling:(NO_SOURCE_PATH:0:0)>
16:23	SagiCZ	:(
16:25	justin_smith	,((comp not nil?) nil)
16:25	clojurebot	false
16:25	justin_smith	(def not-nil? (comp not nil?))
16:25	SagiCZ	yeah.. i actually wanted not-empty but thanks
16:25	SagiCZ	,(= nil [])
16:25	clojurebot	false
16:26	SagiCZ	good to know
16:26	justin_smith	not-empty is seq
16:26	justin_smith	,(empty? [])
16:26	clojurebot	true
16:26	justin_smith	,(seq [])
16:26	clojurebot	nil
16:26	justin_smith	,(seq [1])
16:26	clojurebot	(1)
16:27	SagiCZ	yeah :)
16:27	SagiCZ	i finally finished my state machine.. no macros needed
16:27	SagiCZ	no trampoline either
16:27	justin_smith	awesome
16:27	justin_smith	what replaces the trampoline, recur?
16:27	SagiCZ	yes
16:27	justin_smith	very nice
16:27	SagiCZ	recur with lookup in map.. it looks up the new function according to keyword the previous function returned
16:27	clojurebot	It's greek to me.
16:28	justin_smith	sounds about right
16:28	SagiCZ	justin_smith: i guess.. i will have to test it a lot.. supposed to control my money
16:31	SagiCZ	i guess i should have some function that all the complicated parameters are correct.. should i use the "pre:" asserts for that?
16:33	justin_smith	:pre and :post help with that
16:33	justin_smith	you can also use clojure.test
16:33	eigenlicht	what's the easiest way to go from map => keys and vec => indices?
16:33	justin_smith	and try to figure out good corner cases to test (alongside typical inputs, of course)
16:33	_alejandro	eigenlicht: map -> keys use keys
16:33	justin_smith	eigenlicht: for the former, use keys
16:34	_alejandro	,(keys {:a 1 :b 2})
16:34	clojurebot	(:b :a)
16:34	eigenlicht	yeah, but keys doesn't work on vectors
16:34	justin_smith	for the latter - maybe (range (count v))
16:34	_alejandro	for the latter, probably range count
16:34	_alejandro	justin_smith: nice
16:34	justin_smith	great minds think alike
16:34	teslanick	,(range (count [ 1 2 3 ]))
16:34	clojurebot	(0 1 2)
16:34	SagiCZ	justin_smith: will work on that tomorrow, thanks
16:34	eigenlicht	I'm a nooby, what's the easist way to put that in one function? check for type?
16:35	justin_smith	eigenlicht: what is your goal here?
16:35	llasram	eigenlicht: Generally you don't -- you write your function to expect either a map or a vector
16:35	SagiCZ	i like how the experienced users usually come up with almost identical solutions.. i am glad the language isnt nearly as random as it seems to me now :)
16:35	llasram	There's not many circumstances where it's actually reasonable to use either
16:37	eigenlicht	justin_smith: I want to recurse through a nested datastructure which can consist of any collections (maps, vectors, ...) and modify the leaves in a way
16:37	justin_smith	eigenlicht: the first thing that occurs to me is that you want to do something for each index / each key, but you can use map or reduce to do that directly
16:37	teslanick	eigenlicht: Use a zipper.
16:37	llasram	eigenlicht: clojure.walk
16:37	teslanick	Or that
16:38	eigenlicht	I actually do not want to modify it in place, but create a new datastrucuture with same structure - still zippers?
16:38	justin_smith	eigenlicht: we have many nice ways to walk over a collection and do something at each step, starting with the indexes is not likely to be the best approach
16:38	justin_smith	eigenlicht: thats a good thing, because clojure datatypes are immutible
16:38	justin_smith	and you would have either failed, or produced something really evil
16:38	eigenlicht	here's my apporach til now, which doesnt work with vectors: https://www.refheap.com/88526
16:39	teslanick	eigenlicht: You can't modify the code datastructures in place; they're all immutable.
16:39	eigenlicht	it's an abstraction - of course my modifcation is more complex than (str)
16:40	teslanick	A zipper (or walker) will feel like modifying nodes in place but return a new copy when you're done.
16:40	eigenlicht	oh, stupid me. I'm basically transcribing my python code
16:41	eigenlicht	I'm still wondering whether that transcription could work. what would I really put in there for (keys) if I wanted to get either keys or indices?
16:41	justin_smith	you could make a multimethod that dispatches on the class of the thing
16:41	_alejandro	you could do a conditional on vec? or something
16:41	justin_smith	but really either a zipper or walk/postwalk will be much easier here
16:41	eigenlicht	so, type checking?
16:42	eigenlicht	alright, thanks. checking out zippers later
16:42	arrdem	type dispatch != typechecking
16:42	justin_smith	well, multimethods abstract over typechecking, so you should avoid dispatching on type directly
16:42	maio	is there something like perltidy for clojure? that will format my clojure code according to some standards
16:42	arrdem	maio: TL;DR no
16:42	SagiCZ	maio: clojure.pprint ?
16:43	justin_smith	maio: emacs' indentation rules for clojure are pretty well accepted, and you can run emacs headless theoretically
16:43	_alejandro	maio: arrdem: I wish there were though
16:43	teslanick	Your code should be art! Would you let a robot make art? I think not! ;)
16:43	SagiCZ	teslanick: hey are you robofobic?!
16:43	arrdem	maio: emacs clojure-mode has some minimal support for automatic indentation, but it's not especially bright
16:44	justin_smith	emacs -batch myfile.clj --eval '(indent-region (point-min) (point-max) nil)' -f save-buffer
16:44	SagiCZ	maio: IntelliJ IDEA Cursive indents very well
16:44	justin_smith	the above will work from a command line, if you have emacs installed and it loads clojure-mode proerply
16:44	justin_smith	no need to actually interact with the editor
16:45	justin_smith	arrdem: so you frequently find yourself overriding emacs' indentation choices? or are you talking about where line breaks should go?
16:45	maio	justin_smith: yes I'm using Emacs, but indentation is just one part of the problem
16:46	arrdem	justin_smith: for some stuff like cond I'll format by hand because I like my consequents indented two spaces more than my predicates but for the most part I just use the default indentation and worry about more important things.
16:46	arrdem	<3 align-cljlet
16:47	_alejandro	arrdem: does your emacs not re-indent after a newline? I end up having my custom indentation screwed up by accident and just get frustrated
16:48	justin_smith	_alejandro: electric return or whatever they call it is a thing you can turn off
16:48	arrdem	_alejandro: the last shop I work at told me, and I quote "turn that shit off" when I asked about whitespace conventions wrt automagic whitespace cleanup and reindent
16:49	_alejandro	justin_smith: yeah, but then don't you have to hit tab after you hit enter?
16:49	justin_smith	but I gave up long ago (before I even started using clojure) on trying to use an indentation policy other than the one my editor can implement (or at least respect)
16:49	justin_smith	_alejandro: or M-h M-w indent-region to align the current defun
16:49	justin_smith	or whatever other method floats your boat
16:49	_alejandro	justin_smith: hmm, may give that a go and turn off the auto
16:51	justin_smith	the M-w is redundant there, really you can do M-h C-M-\
16:51	justin_smith	that selects the entire defun as region, then indents it
16:52	justin_smith	I use auto-indent to find trivial formatting errors (if something indents weird I probably nested something wrong)
16:55	arrdem	I should try that.. I often find that I have one paren too many or too few and cider of late has been really bad about matching buffer lines to errors
16:56	arrdem	as in jumping two defs down from where the error is bad
16:56	DomKM	Is it possible to test if a type implements a protocol method? Here's what I'm trying to solve: https://www.refheap.com/88529
16:59	_alejandro	DomKM: why do an incomplete extension of the protocol?
17:01	justin_smith	,(instance? clojure.lang.IFn :a)
17:01	clojurebot	true
17:01	justin_smith	DomKM
17:01	justin_smith	oh, for the specific method coverage, that is another issue entirely
17:01	_alejandro	justin_smith: I don't think that will work if you don't actually implement the entire interface
17:02	DomKM	_alejandro: Because some of the methods are optional but I want to provide default implementations. Function `blah` calls `-blah` if it exists, otherwise does a default thing. The only alternative I can think of is using multiple single-method protocols.
17:02	justin_smith	yeah, I think the solution is to implement it fully
17:02	justin_smith	DomKM: you can use a hash-map to extend a type to a protocol, and merge your custom methods with the map of defaults
17:03	justin_smith	DomKM: example here https://github.com/caribou/caribou-plugin/blob/master/src/caribou/plugin/protocol.clj#L26
17:03	DomKM	justin_smith: I'm not sure what you mean. Is there any example?
17:03	DomKM	a second too slow to hit enter ;)
17:03	justin_smith	see the definitions of null-implementation and make
17:06	justin_smith	DomKM: another (very ugly) option would be to verify that the protocol is implemented at all, and then catch the IllegalArgumentException. But I don't like that idea.
17:06	DomKM	justin_smith: that extend technique is very clever. Unfortunately, cljs lacks extend and I need this to be portable.
17:06	justin_smith	oh, ouch
17:06	DomKM	justin_smith: yeah I considered trying and catching but I want to avoid that
17:10	akhudek	hah, while trying to write an example to illustrate one error, I find another
17:10	DomKM	so there's really no way to check if a protocol method is implemented? In that case, why is it even possible to partially implement a protocol?
17:10	akhudek	does anyone know waht is wrong with this code?
17:10	akhudek	https://github.com/akhudek/om-async-error/blob/master/src/om_async_error/core.cljs
17:10	justin_smith	,(:a 5) DomKM: dunno, same reason you can do keyword lookup on a number?
17:10	akhudek	specifically, as soon as you type into the text box, the dump-chan channel stops working
17:10	clojurebot	nil
17:11	DomKM	justin_smith: looks on objects that arent's associative return nil
17:11	akhudek	you can clone that repository, run cljsbuild, then open index.html to run it locally
17:11	DomKM	justin_smith: it's debatable whether that's a positive or not
17:11	justin_smith	DomKM: right, and extend lets you incompletely implement a protocol
17:11	justin_smith	it's a liberal language
17:12	DomKM	justin_smith: but it currently seems like a type can satisfy a protocol but, when you call the protocol method, it could be missing
17:12	DomKM	justin_smith: with no way of testing if it's actually implemented
17:20	_alejandro	akhudek: I think it's because dump-chan is not the same after a re-render
17:20	_alejandro	akhudek: probably because of the redefine of chan on 44
17:21	_alejandro	akhudek: so if base's render method gets called again, it makes a new chan and gives it to myform, but myform's willmount method doesn't get called again, so there's nothing listening on the new channel
17:22	akhudek	_alejandro: Ok, that makes sense thanks. I’ve fixed it and managed to reproduce the original bug that was trying to demonstrate.
17:24	akhudek	_alejandro: would you mind taking a quick look at the actual problem I was trying to reproduce? I have the description in the readme. https://github.com/akhudek/om-async-error
17:24	akhudek	This particular one can be fixed by making sure that you actually close the channel before toggling the form off
17:25	akhudek	but I have no idea why it occurs in the first place
17:30	_alejandro	akhudek: looking, but I know very little about Om, so unlikely to be of help
17:35	akhudek	_alejandro: hmm, I think I may have figured it out. I guess unmounting the form doesn’t gc the go block and so subsequent messages to dump-chan alternate between the new go block and the old unmounted one.
17:35	_alejandro	akhudek: interesting. good find
17:35	_alejandro	how do you fix that?
17:36	akhudek	I’m not sure what the best way is at the moment. It’s surprising though, because the style I used here is pretty typical for om applications.
17:36	akhudek	at least I thought it was
17:36	_alejandro	yeah, sorry I was no help
17:36	_alejandro	if you push the fix, i'd be interested to see it though
17:36	_alejandro	good luck
17:37	akhudek	_alejandro: no worries, thanks for taking the time to look though, sometimes it just helps to have someone to talk over with :-)
18:06	fifosine	,(map (fn [f] (nth "012" (f 5 3))) '(quot rem))
18:06	clojurebot	#<StringIndexOutOfBoundsException java.lang.StringIndexOutOfBoundsException: String index out of range: 3>
18:06	fifosine	^ what's wrong with that?
18:07	fifosine	,(quot 5 3)
18:07	clojurebot	1
18:07	fifosine	,(rem 5 3)
18:07	clojurebot	2
18:07	Bronsa	,('quot 5 3)
18:07	clojurebot	3
18:07	Bronsa	,('rem 5 3)
18:07	clojurebot	3
18:07	fifosine	I thought the quot meant "don't evaluate this"?
18:07	fifosine	*quote
18:07	technomancy	fifosine: it does
18:08	Bronsa	fifosine: right, you're invoking a symbol rather than a function
18:08	fifosine	errr
18:08	fifosine	ok
18:08	justin_smith	right, so you get the symbol 'quot which when used as a function invokes get which uses its second arg as a default if the value is not found in the first arg
18:08	Bronsa	and when a symbol is invoked it behaves like a get
18:08	Bronsa	so ('foo bar baz) ~ (get bar 'foo baz)
18:08	aperiodic	,('a '{a :foo} :bar)
18:08	clojurebot	:foo
18:08	technomancy	I wonder if anyone has ever done that intentionally
18:08	aperiodic	,('a '{b :foo} :bar)
18:08	clojurebot	:bar
18:09	justin_smith	(inc technomancy)
18:09	lazybot	⇒ 124
18:09	Bronsa	technomancy: yeah I'm not a big fan of symbols-as-functions either
18:09	fifosine	so what I really want is (list quot rem)?
18:10	Bronsa	fifosine: yes, or [quot rem]
18:10	technomancy	huh, I thought I passed 127; has someone been dec'ing me?
18:11	technomancy	it wasn't one of you, was it? I thought we were pals.
18:11	justin_smith	$karma justin_smith
18:11	lazybot	justin_smith has karma 51.
18:12	justin_smith	$karma so
18:12	lazybot	so has karma -31.
18:14	arrdem	technomancy: how much memory did it eat? I have an Arduino Mega lying around for a post-GSoC hardware project and AVR/Arduino C can suck it.
18:15	{blake}	technomancy, According to lazybot.org your last inc was last Friday from catern, and it raised your karma to 123.
18:16	technomancy	arrdem: it got about 20% of the way into my firmware code before using up all 2.5kb of ram
18:16	technomancy	{blake}: hmmm... maybe I dreamed it
18:16	arrdem	technomancy: my logs show no instances of dec applied to you evar
18:16	technomancy	arrdem: awww. group hug.
18:17	arrdem	<3
18:17	arrdem	pls maintain leiningen will give incs
18:17	{blake}	heh
18:19	arrdem	pman and so appear to be the dec whipping boys..
18:19	arrdem	*pmap
18:19	arrdem	$karma pmap
18:19	lazybot	pmap has karma -3.
18:20	technomancy	arrdem: how much ram does this board of yours have?
18:21	arrdem	technomancy: 8kb SRAM
18:21	technomancy	luxury!
18:22	arrdem	heh
18:22	arrdem	just as long as I don't have to dig out a tome on garbage collection and implement it myself..
18:23	technomancy	forth doesn't really have GC
18:23	technomancy	"just use the stack"
18:24	arrdem	yeah looks like there is no scheme/lua for Arduino, only C or Forth
18:25	technomancy	for AVR, yeah
18:25	technomancy	there is an ARM arduino
18:25	technomancy	but it's really overpriced
18:25	akhudek	dang, it turns out I don’t understand om and core.async as well as I thought. :-/
18:25	arrdem	the Beaglebones are the only not overpriced ARM devish boards, and they're out of stock :P
18:26	technomancy	arrdem: the existing forths for AVR work by overwriting the arduino bootloader, which is cool if you aren't planning on using it for anything else
18:26	technomancy	arrdem: the arduino due is a plaything compared to the beaglebone
18:26	aperiodic	I found a lisp that was advertised to run on AVR ucs once, but it looked like C with parentheses. not at all pleasant to program in
18:26	akhudek	so for this poroblem https://github.com/akhudek/om-async-error/tree/master, there is this fix https://github.com/akhudek/om-async-error/tree/alts-fix, but it doesn’t scale easily for more than one go-block
18:27	arrdem	aperiodic: I designed such a lang not long before I came to clojure... it was never implemented for exactly that reason. C in sexprs doesn't buy you much besides real macros.
18:27	akhudek	and while I know how to fix it, I don’t actually understand why https://github.com/akhudek/om-async-error/tree/chan-opts-bug happens
18:27	akhudek	it was suggested that it was due to the base component getting rerendered, but that isn’t actually the case
18:28	arrdem	technomancy: hum... really all I'm trying to do is use an xbee for packet radio and a little bit of state machine pin IO so I'll probably just suck it up and write C
18:28	technomancy	arrdem: if you want a reasonable bare-metal arm board, a teensy 3 or one of these would be my recommendation: https://mchck.org/
18:28	arrdem	technomancy: ooh cool I'll check that out
18:29	technomancy	the teensy 3 is more polished but not an oss design. the mchck looks somewhat immature; would require a more adventurous soul.
18:29	arrdem	heh
18:29	technomancy	but looks pretty amazing if it delivers on its goals
18:36	justin_smith	arrdem: beaglebone is awesome
18:46	technomancy	justin_smith: it is, but total overkill for a lot of situations
18:46	technomancy	especially sensor networks
18:47	justin_smith	yeah, it's true
18:47	justin_smith	that mc hck thing looks pretty cool for small stuff
18:47	technomancy	yeah, I love the idea of something cheap enough that you don't feel bad if you step on it or something
18:48	technomancy	so far the only things under USD10 I've seen have been attiny-based
18:48	justin_smith	technomancy: http://ebrombaugh.studionebula.com/synth/stm32f4_codec/ I have a few of these in the works for making tiny signal processing boxes (think guitar pedals / modular synth units)
18:48	technomancy	nice
18:49	justin_smith	we ordered the open source pcb board from a manufacturor - ordering like 40 was $10 more compared to getting 4 of them
18:49	justin_smith	the whole thing is free / open designs as much as is feasible, which is cool
18:50	justin_smith	the amazing thing is someone has a scheme to attach desktop ram to the thing...
18:50	justin_smith	which opens up huge opportunities with DSP stuff
18:51	justin_smith	(long delays, complex convolutions for hardware or acoustic space simulation, big sample memory...)
18:52	technomancy	yeah it's weird how the economics of pcbs work
18:52	technomancy	always sucks if you want just one of anything
18:52	justin_smith	to be sure
18:53	justin_smith	and I wouldn't even be able to play with this except my friend has a pick+place machine, which makes soldering to the board much more reasonable
18:53	justin_smith	http://en.wikipedia.org/wiki/SMT_placement_equipment
18:53	aperiodic	the OSH Park community PCB order is the best thing I've been able to find for small-scale boards
18:55	technomancy	jealous
19:08	FuzzyHarpyBug	Hello! What topics are allowed here?
19:08	justin_smith	FuzzyHarpyBug: clojure is encouraged, but people get away with a lot
19:10	technomancy	no racism, misogyny, spam, or excessive cusses
19:10	FuzzyHarpyBug	Well, since it seems quiet right now...
19:10	FuzzyHarpyBug	Ok, maybe someone here can help me with this question instead. I have root login and password auth disabled for my ubuntu 14.04 server, public key auth only. Is there a way to make just a certain directory accessible with a username and password?
19:10	technomancy	our rules about only allowing Haskell evangelism between the hours of 2300 and 0200 have been temporarily lifted but may be reinstated if the need arises
19:11	scape_	lol
19:11	FuzzyHarpyBug	XD
19:11	FuzzyHarpyBug	Or...
19:12	FuzzyHarpyBug	I need a little help connecting dreamweaver to my apache server. trying to use mod_dav but I have no idea what I'm doing. This is what I've got so far http://pastie.org/9415872 in the apache2.conf file, and http://imgur.com/iDmWXpn in the dreamweaver config.
19:12	scape_	FuzzyHarpyBug, you could install an ACL package, or create a local user account and add it to a group
19:12	scape_	Is there a clojure library/method for communicating back and forth with Android/java running threads?
19:12	FuzzyHarpyBug	Don't quite see how that would help though... I have password authentication disabled globally.
19:13	justin_smith	FuzzyHarpyBug: even for local (already logged in) user account login via su?
19:13	scape_	are you sure? the new ssh, I thought, allowed local account login-- disallowed root
19:14	justin_smith	scape_: well, clojure is a java library - do you mean within one vm, between vms, between hosts?
19:14	scape_	within one vm/environment
19:14	FuzzyHarpyBug	justin_smith: No, I can use sudo su and then it asks me for my root password, that works. Initial connection has to be public key auth though.
19:15	scape_	my android activity starts my clojure program, I'd like to be able to spin off a thread on the android side first and communicate with it
19:15	justin_smith	FuzzyHarpyBug: sudo should not be asking for root password, and you can directly use su if you know the pw of the targetted user after login. Maybe I don't understand what you are actually trying to do here.
19:16	augustl	ugh, talking to jdbc directly and building prepared statements by hand was fun until I needed a function that takes either a string or null for a field..
19:16	clojurebot	I don't understand.
19:16	FuzzyHarpyBug	Hmm....
19:17	scape_	why was string a pain? augustl
19:17	justin_smith	scape_: you could use a queue for each side, in order to pass messages back and forth. Or any other standard java inter-thread coordination method
19:17	augustl	scape_: have to either do foo = ? or foo IS NULL and then figure out whether or not to call setInteger on the prepared statement and what not
19:17	augustl	boring..
19:18	scape_	okay, just wasn't sure if there was a library out there that handled this
19:18	FuzzyHarpyBug	I'm trying to connect Dreamweaver so I can pull and push files directly. But I don't want anything on the server other than the website files accessible except by keypair auth.
19:18	scape_	FuzzyHarpyBug, what's wrong with ftp?
19:18	FuzzyHarpyBug	At the moment I'm just doing it manually with WinSCP
19:18	FuzzyHarpyBug	can't use ftp without password auth
19:19	justin_smith	scape_: not specifically for java -> clojure ipc that I know of, but look into the API for java.util.concurrent.SynchronousQueue, it effectively is that library and comes with the jvm
19:20	scape_	okay, i've messed with that before. good idea. maybe I'm over thinking it :D
19:20	justin_smith	scape_: just have two queues, each side reads from one and writes to the other
19:21	justin_smith	FuzzyHarpyBug: what about sshfs, using a keypair specific to that user
19:22	justin_smith	that will create a local drive, anything moved to that drive will be scp'd to the remote
19:22	FuzzyHarpyBug	justin_smith: never heard of it... that sounds like it could be useful though.
19:22	justin_smith	https://code.google.com/p/win-sshfs/ windows, right?
19:22	FuzzyHarpyBug	justin_smith: starting yesterday this is the first time i've touched anything linux in over 4 years. lol
19:23	FuzzyHarpyBug	justin_smith: yes, my local machine is Win7 x64, my server is on a ubuntu 14.04 linode vps
19:24	justin_smith	yeah, if your network connection is mostly reliable, sshfs is pretty convenient (as long as you remember that reads and writes will be slow and don't try to use it like a normal disk, of course - since each write is really a server upload, and each read is really a download)
19:25	FuzzyHarpyBug	right, hehe
19:25	FuzzyHarpyBug	actually this looks really really useful...
19:25	FuzzyHarpyBug	hmm
19:25	scape_	good idea justin_smith
19:25	justin_smith	thanks
19:26	arrdem	technomancy: have you done anything with small single sensor wireless nodes?
19:26	FuzzyHarpyBug	problem is I'm carrying the adobe suite and my auth keys around on a flashdrive... i'd rather not have to set this up everytime i sit at a new computer...
19:26	FuzzyHarpyBug	i like to just plug in the drive and go
19:26	arrdem	technomancy: I've been surprised looking at the xbee hardware that it's got enough onboard power that the spec provides for simple remote IO and polling
19:27	technomancy	arrdem: I have not. the beaglebone is the only sensor node I've got, and I used that because I wanted it to be an xmpp bot too.
19:27	arrdem	technomancy: gotcha.
19:27	justin_smith	FuzzyHarpyBug: maybe it would be easier to just use a copy of pscp (from the putty folks) installed to the flash drive
19:27	technomancy	the only real uc projects I've done apart from the keyboards have been silly things with my kids like LED cycling and a clock
19:27	justin_smith	but I dunno, maybe sshfs can install to the flash drive? that seems less likely
19:28	arrdem	justin_smith: I think sshfs is a standalone binary more or less... should be doable
19:28	justin_smith	arrdem: awesome, haven't had to use it outside my home world of linux, so I wasn't sure
19:28	FuzzyHarpyBug	yes, but you'd have to map the drive on every new computer. not too bad i suppose...
19:29	justin_smith	FuzzyHarpyBug: running the binary should map the drive, I don't think there would be much to it
19:29	arrdem	justin_smith: I mean neither have I... better grab `which sshfs` and try running it from somewhere random..
19:29	FuzzyHarpyBug	hmm. ok. i'll try it out
19:29	FuzzyHarpyBug	Thanks!
19:38	augustl	I do a reduce for side effects (jdbc calls). Should I wrap it in doall?
19:39	technomancy	augustl: no
19:41	augustl	I like to have everything with a side effect inside something that says "do" :)
19:41	arrdem	right... but reduce is for accumulating a value
19:41	arrdem	not for sequential side effects
19:41	arrdem	doseq dotimes or something else would be a better construct
19:42	technomancy	yeah, if you can separate out your side-effects from your values you should
19:42	augustl	I do care about the return value, though, so I guess reduce makes sense, even though getting the return value requires side effects
19:43	arrdem	meh this is a masturbatory "what is idiomatic" point.
19:44	arrdem	I'd probably write (->> (reduce) (doall)), I've seen Bronsa write doseq with an atom for the result..
19:44	arrdem	it doesn't matter.
19:45	augustl	arrdem: yeah my main goal is to communicate intent, and be future proof :)
19:46	augustl	as in, is it reasonable to assume that reduce won't be lazy in future clojure releases, or is that unspecified
19:46	arrdem	unspecified and it may be lazy now
19:46	arrdem	AFAIK
19:46	arrdem	but this is very poorly documented teritory. ask amalloy, the true magus, for details. I know not.
19:47	Bronsa	I don't think reduce could be lazy
19:47	arrdem	Bronsa: depends on the value...
19:47	arrdem	(reduce concat) totally can be, but that's lazy on the function not on reduce
19:48	arrdem	(reduce assoc) not so much
19:48	Bronsa	arrdem: that's like saying that identity can be lazy because (identity (range)) :)
19:48	arrdem	Bronsa: :P
19:48	arrdem	in Clojure 2.X reduce shall return a delay
19:48	arrdem	WHAT NOW
19:49	Bronsa	,(reduce concat (range))
19:49	Raynes	arrdem: excuse me
19:49	clojurebot	#<OutOfMemoryError java.lang.OutOfMemoryError: Java heap space>
19:49	augustl	well 2.0 can break anything it wants to ;)
19:49	Bronsa	definitely lazy arrdem
19:50	augustl	do we like (->> coll (reduce ...) (doall)) or (->> col (reduce ...) doall)? :)
19:51	bbloom	augustl: is the result of the reduce a seq?
19:51	augustl	bbloom: no, an int
19:52	augustl	and by answering that question I now understand why it makes no sense to think of reduce as lazy
19:52	bbloom	augustl: https://github.com/brandonbloom/transduce
19:52	Bronsa	augustl: also, ##(doall 1)
19:52	lazybot	java.lang.IllegalArgumentException: Don't know how to create ISeq from: java.lang.Long
19:52	augustl	when would it ever make sense to have a lazy reduce
19:52	bbloom	you can just copy/paste map-state and each
19:52	bbloom	i guess in theory there could also be an each-state
19:53	bbloom	but i've found map-state, mapcat-state, and each to all be useful more than a few times
20:06	justin_smith	maybe a lazy reductions?
20:07	justin_smith	well actually yeah, reductions, which is in fact lazy
20:07	justin_smith	so there we go
20:08	justin_smith	,(last (take 50 (reductions *' (map inc (range)))))
20:08	clojurebot	eval service is offline
20:09	arrdem	when did justin_smith join me on the hellban list..
20:09	justin_smith	must have been very recent, if it happened at all
20:09	quxx	,4
20:09	clojurebot	eval service is offline
20:10	arrdem	hum
20:10	arrdem	may actually be down who knows
20:10	justin_smith	&(last (take 50 (reductions *' (map inc (range)))))
20:10	lazybot	⇒ 30414093201713378043612608166064768844377641568960512000000000000N
20:10	justin_smith	there we go
20:10	justin_smith	nice big number there
20:11	typecheckforwhat	,(+ 3 3)
20:11	clojurebot	eval service is offline
20:11	arrdem	bot iz dead
20:11	justin_smith	typecheckforwhat: goddammit now I have little john's voice shouting in my head
20:11	justin_smith	:)
20:12	arrdem	justin_smith: you're welcome
20:12	arrdem	there are 16 words in that entire song..
20:13	justin_smith	fire up your cloud / another round of pull requests / type check for what
20:13	justin_smith	or some shit
20:13	arrdem	13 distinct words
20:13	arrdem	if "'nother" != "another"
20:15	justin_smith	&(last (take 1024 (reductions *' (map inc (range)))))
20:15	lazybot	⇒ 541852879605885728307692194468385473800155396353801344448287027068321061207337660373314098413621458671907918845708980753931994165770187368260454133333721939108367528012764993769768292516937891165755680659663747947314518404886677672556125188694335251213677274521963430... https://www.refheap.com/88534
20:15	justin_smith	haha the number was too big so he had to refheap it
20:16	technomancy	isn't last+take just nth?
20:17	justin_smith	yeah, I was being silly
20:17	gfredericks	can't do nth with ->>
20:18	gfredericks	come on nth why you gotta be like that
20:23	technomancy	functions gonna funk
20:23	technomancy	or wait
20:23	technomancy	maybe that was functors
20:26	deathknight	clj-facebook-graph has an example file that is a whole web app that can be run by a lein command. how would I run a specific file in a lein project via lein command?
20:27	deathknight	said file is in ~/clj-facebook-project-folder/test/clj_facebook_graph/example.clj
20:27	technomancy	deathknight: lein run -m my.ns
20:32	ttasterisco	technomancy: hey, how do the projects that have a checkouts/ folder deal with the version of the project defined in their :dependencies? do they ignore it?
20:33	technomancy	ttasterisco: sort of. the :dependencies version is shadowed on the classpath by the checkout, but it's still there if you know where to look. see for yourself: `lein classpath`
20:39	gfredericks	technomancy: I think functions are functors so presumably they are also gonna funk
20:49	deathknight	technomancy: I'm getting a "can't find 'example.clj' as .class or .clj for lein run: please check the spelling" error
20:50	deathknight	i'm running the command $ lein run -m example.clj from ~/project-dir/
20:50	ttasterisco	how are people running daemons in clojure? jsvc? is it me or I cant use the same jar to run multiple jsvc-s?
21:37	numberten	has anyone experienced a hanging that arises from exceptions being thrown in a pmap thread?
21:39	justin_smith	$karma pmap
21:39	lazybot	pmap has karma -3.
21:39	justin_smith	pmap is pretty unpopular
21:56	seancorfield	deathknight: based on that folder structure I'd suggest: lein run -m clj-facebook-graph.example
22:08	gfredericks	okay I think I want to make this library I've been imagining for wrapping values & thrown exceptions
22:09	trptcolin	Maybe you should
22:09	trptcolin	get it?
22:10	gfredericks	I think an either joke would be more appropriate
22:10	trptcolin	dangit
22:10	gfredericks	I was going to call it Ether but then I decided it's not quite the either monad
22:10	gfredericks	at least usage-wise
22:11	john2x	reading the core.typed User Guide, and it says "All vars/function params must be annotated". Does this mean all vars/functions in my whole project? (it's an all or nothing thing?)
22:11	justin_smith	I think ether is a better name for a library that makes your program pass out and hallucinate
22:12	gfredericks	justin_smith: I guess probably it redefines some clojure.core function
22:12	gfredericks	,(alter-var-root #'assoc (constantly dissoc))
22:12	clojurebot	eval service is offline
22:12	gfredericks	yeah I bet it is
22:13	justin_smith	gfredericks: add a lingering headache and you're golden
22:14	seangrove	john2x: Kind of. You can use ^:no-check to tell core.typed to trust you
22:15	gfredericks	I found out yesterday that idris has a function(?) called believe_me
22:16	gfredericks	then I was going to call it handoff but I decided anything based around ball-carriers didn't make as much sense actually either
22:17	gfredericks	haha get it either
22:17	hellofunk	amalloy: I was just reading your response here and have a followup question for you (or anyone): http://www.reddit.com/r/Clojure/comments/1vc0at/clojurescript_gc_and_memory_leaks/
22:17	hellofunk	ah, he's not online
22:18	trptcolin	gfredericks: nailed it
22:18	hellofunk	anyway that reddit refers to this guys' code: http://blog.steveolsen.us/clojurescript-gc-and-memory/ I'm wondering why the issue described by amalloy doesn't also apply to the map function for new-vol in the code
22:19	justin_smith	what was the issue amalloy described?
22:20	hellofunk	justin_smith all noted above in links
22:20	justin_smith	hellofunk: this http://www.reddit.com/r/Clojure/comments/1vc0at/clojurescript_gc_and_memory_leaks/cer0svo ?
22:20	gfredericks	trptcolin: you just hang around #clojure for the occasional pun don't you
22:20	gfredericks	haha get it either
22:21	hellofunk	justin_smith look at the second link I posted from steveolsen.us
22:21	trptcolin	s/#clojure/wherever/g
22:21	hellofunk	http://blog.steveolsen.us/clojurescript-gc-and-memory/
22:21	justin_smith	yeah, that's the link that led me to the reddit post where I saw the thing you were asking amalloy about
22:22	justin_smith	oddly he didn't describe the information that fixed his problem in the blog post
22:26	gfredericks	under my so-far-unused first-random-name-from-wikipedia naming convention I would have to call it Goronwy Roberts
22:27	justin_smith	goronwy is definitely a googlable name
22:28	gfredericks	would have to admit to not knowing how to pronounce my own library's name
22:28	gfredericks	which seems like a win
22:29	justin_smith	http://www.forvo.com/word/goronwy/
22:29	justin_smith	that r tho
22:29	gfredericks	I refuse to listen to that
22:30	gfredericks	I must preserve my innocence
22:30	justin_smith	the origin of the name http://en.wikipedia.org/wiki/Gronw_Pebr
22:30	gfredericks	the fun thing about this naming convention is that you can define success as overtaking the wikipedia article in google search results
22:31	justin_smith	heh
22:31	justin_smith	"argentina at the 1998 winter olympics" is a mouthful of a name for a lib
22:31	gfredericks	no you take the first human name
22:32	justin_smith	stawno would work
22:32	justin_smith	sounds like something you could buy by the bottle