#clojure – 2012-09-06

2012-09-06

00:00	cgag	line-seq comes with clojure
00:00	technomancy	Sgeo: yeah, definitely
00:00	xeqi	yes, and you'd have to be careful to not close the file to early
00:00	technomancy	well, there's line-seq, but line-seq forces you to wrap it in a with-open
00:00	technomancy	so you can't just treat it like any old seq
00:01	devn	Sgeo: http://clojuredocs.org/clojure_core/clojure.core/line-seq
00:01	devn	not the with-open wrapper
00:01	devn	note*
00:02	cgag	actually i think i've been bit before by doing something like (for [line (line-seq)] ...) within a with-open
00:03	cgag	since it returns the lazy seq but closes the reader, or at least that's what i thought was happening
00:07	ohpauleez	cgag: Not the biggest n, the biggest n for the DS
00:10	cgag	DS?
00:10	clojurebot	bcrypt. http://codahale.com/how-to-safely-store-a-password/
00:12	ohpauleez	Data structures
00:12	ohpauleez	the tries
00:15	ohpauleez	at least, that's what I recall
00:17	yankov	do you guys think PersistentTreeMap is a good choice for something like leaderboards. How fast it sorts by keys
00:28	devn	yankov: once upon a time i used PersistentQueue but it was just for fun
00:35	SegFaultAX	I have a vector of strings ["XX" "XY"] which I want to convert into a dict like {\X [[0 0] [1 0] [1 0]] \Y [[1 1]]}. What's the best way to do it?
00:37	Sgeo	Are there any good guides for making macros that write macros?
00:38	casion	Sgeo: you scare me
00:39	SegFaultAX	,(let [b ["XX" XY"]] (group-by first (for [y (range (count b)) x (range (count (get b y)) :let [v (get-in b [y x])] [v [x y]]))
00:39	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.lang.RuntimeException: EOF while reading string>
00:39	SegFaultAX	,(let [b ["XX" XY"]] (group-by first (for [y (range (count b)) x (range (count (get b y)) :let [v (get-in b [y x])] [v [x y]])))
00:39	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.lang.RuntimeException: EOF while reading string>
00:39	SegFaultAX	Hmm.
00:39	Sgeo	I actually have a use-case in mind. This fact may be even scarier.
00:40	SegFaultAX	Sgeo: Why would you want to do such a thing?
00:40	Sgeo	with- macros seem to be at least somewhat common and idiomatic
00:40	casion	Sgeo: can you explain please?
00:40	Sgeo	Yet, to a degree, they're all similar
00:40	Sgeo	So, why not a macro that expands into a defmacro form to define a with- macro?
00:41	Sgeo	(defwithmacro with-something pre-function post-function) might be an example usage
00:41	Sgeo	The created macro could be used like (with-something somecode morecode)
00:41	Sgeo	somecode morecode might be surrounded by pre-function before it and post-function after it
00:42	Sgeo	Although the idea would require a bit more work in order to be useful, since you tend to want the result of the pre-function, in both the body and the post-function
00:42	casion	wouldn't you just use -> ->> or comp for that though?
00:42	casion	and that's end up more readable
00:43	amalloy	$google amalloy macro writing macros
00:43	lazybot	[Clojure: macro-writing macros - amalloy - HubPages] http://amalloy.hubpages.com/hub/Clojure-macro-writing-macros
00:43	amalloy	from back when i did a brief series of blogs
00:43	SegFaultAX	amalloy: Did you happen to catch my question above? Do you have any thoughts?
00:43	Sgeo	amalloy, cool
00:45	amalloy	SegFaultAX: looks like (for [[i s] (map-indexed vector coll), [j x] (map-indexed vector s)] [x [i j]]) and some kind of reduce
00:46	SegFaultAX	I forgot about map-indexed.
00:47	SegFaultAX	,(map-indexed (range 3))
00:47	clojurebot	#<ArityException clojure.lang.ArityException: Wrong number of args (1) passed to: core$map-indexed>
00:47	SegFaultAX	,(map-indexed #(* % %) (range 3))
00:47	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: clojure.lang.ArityException: Wrong number of args (2) passed to: sandbox$eval102$fn>
00:47	SegFaultAX	Argh, I suck right now.
00:47	amalloy	&(reduce #(update-in %1 (fnil conj []) %2) {} (for [[i s] (map-indexed vector ["XX" XY"]), [j x] (map-indexed vector s)] [x [i j]]))
00:47	lazybot	java.lang.RuntimeException: EOF while reading string
00:47	SegFaultAX	I need sleep.
00:47	casion	,(map-indexed #(* % %2) (range 3))
00:47	clojurebot	(0 1 4)
00:48	SegFaultAX	(doc fnil)
00:48	clojurebot	"([f x] [f x y] [f x y z]); Takes a function f, and returns a function that calls f, replacing a nil first argument to f with the supplied value x. Higher arity versions can replace arguments in the second and third positions (y, z). Note that the function f can take any number of arguments, not just the one(s) being nil-patched."
00:49	amalloy	SegFaultAX: https://gist.github.com/b22b208d0943ef9290c7
00:49	clojurebot	eg, https://github.com/clojure/tools.logging is the new version of clojure.contrib.logging
00:51	Sgeo	<asiekierka> Sgeo: only one level of recursion?
00:51	Sgeo	<asiekierka> why not make macros that write macros that write macros
00:51	Sgeo	<oerjan> why not make fix (macros that write)
00:51	Sgeo	oerjan's idea is the best
00:51	SegFaultAX	amalloy: Is fnil a new thing? I've previously been doing what you're using fnil for with get/get-in and a default value.
00:51	amalloy	&(:added (meta #'fnil))
00:51	lazybot	⇒ "1.2"
00:52	casion	fnil is 1.2
00:52	SegFaultAX	And lots of the code I've read uses that pattern, which is why I thought it was normalish.
00:52	casion	I lose the race :(
00:52	Sgeo	,(doc fnil)
00:52	clojurebot	"([f x] [f x y] [f x y z]); Takes a function f, and returns a function that calls f, replacing a nil first argument to f with the supplied value x. Higher arity versions can replace arguments in the second and third positions (y, z). Note that the function f can take any number of arguments, not just the one(s) being nil-patched."
00:53	SegFaultAX	Cool! Thanks :)
00:53	SegFaultAX	(inc amalloy)
00:53	lazybot	⇒ 31
00:53	Sgeo	...I should learn to read scrollup someday
00:53	casion	amalloy is just some sort of clojure genie
00:56	Sgeo	amalloy, the ~'& thing seems important to know about even for macros that, say, merely write functions
00:57	amalloy	it turns out not to matter
00:57	amalloy	foo/& works just as well as &
00:57	Sgeo	Oh, huh.
01:07	Sgeo	Hmm, defining methods on print-dup should always output code that the reader will read in as the target class, rather than code that's just a list but will evaluate to an object?
01:07	Sgeo	(I'm referring to the use of #= in http://amalloy.hubpages.com/hub/Dont-use-XML-JSON-for-Clojure-only-persistence-messaging
01:08	SegFaultAX	When should I be using (set coll) vs. (into #{} coll)?
01:09	SegFaultAX	Or should I always prefer (into #{} ...)?
01:09	antares_	SegFaultAX: just use clojure.core/set
01:10	SegFaultAX	So when is into appropriate?
01:10	casion	SegFaultAX: I belive (set coll) is almost always faster
01:11	SegFaultAX	(time (do (into #{} (range 1000)) nil))
01:11	SegFaultAX	,(time (do (into #{} (range 1000)) nil))
01:11	clojurebot	"Elapsed time: 39.561528 msecs"
01:11	antares_	SegFaultAX: into is more generic: you can use it with non-empty collections and it also works for maps and so on
01:11	antares_	clojure.core/set is much more narrow in scope
01:11	SegFaultAX	,(time (do (set (range 1000)) nil))
01:11	clojurebot	"Elapsed time: 20.569105 msecs"
01:11	SegFaultAX	antares_: Hmm, ok. Thanks.
01:12	casion	into copies everything with reduce conj
01:12	SegFaultAX	casion: conj! right?
01:12	SegFaultAX	(source into)
01:15	SegFaultAX	Sorry, closed the wrong window.
01:15	SegFaultAX	Please repeat what you said.
01:16	casion	http://clojuredocs.org/clojure_core/clojure.core/into
01:16	SegFaultAX	casion: Looks to be using conj! to me.
01:17	casion	SegFaultAX: in your example I think it's using conj
01:17	casion	I could be incorrect
01:18	casion	yeah, pretty sure it is
01:18	SegFaultAX	(instance? clojure.lang.IEditableCollection #{})
01:18	SegFaultAX	,(instance? clojure.lang.IEditableCollection #{})
01:18	clojurebot	true
01:18	SegFaultAX	I see.
01:19	casion	well, I'm wrong then hah
01:19	SegFaultAX	:)
01:19	casion	I for some reason thought we were talking about vectors
01:19	casion	it's too late for thinking clearly
01:19	Sgeo	EditableCollection?
01:19	Sgeo	Oh, I assume that means compatible with transientness
01:20	Sgeo	Not that the structure itself is editable
01:20	SegFaultAX	Sgeo: Seems like a reasonable guess to me.
01:21	Sgeo	"If a pure function mutates some local data in order to produce an immutable return value, is that ok?"
01:21	Sgeo	The ST monad in Haskell allows for that
01:21	SegFaultAX	So, use into when I'm copying items into an existing collection, otherwise just use the appropriate constructor function?
01:21	SegFaultAX	For some reason I thought that (into ...) was preferred.
01:24	Sgeo	,(class {})
01:24	clojurebot	clojure.lang.PersistentArrayMap
01:24	Sgeo	,(class (transient {}))
01:24	clojurebot	clojure.lang.PersistentArrayMap$TransientArrayMap
01:46	libier	holaaa
01:48	Sgeo	I need sleep
01:49	mpan	what does it mean that I can't resolve defn?
02:16	kryft	I'm trying to get started with clojure, and I noticed that swank is apparently deprecated with nrepl recommended instead.
02:17	Raynes	Well, your observational skills are top notch. ;)
02:17	tomoj	hmm, is there any nice way to hack on clojure itself with leiningen, since clojure doesn't have a project.clj?
02:17	Raynes	Write one, I guess.
02:18	kryft	Raynes: :D Sorry, I have a fever, so I'm not very coherent. I meant to ask whether I should go with swank anyway because all other docs still talk about swank+SLIME?
02:18	Raynes	No, go with nrepl.
02:18	Raynes	And I hope you feel better.
02:19	kryft	Thanks on both accounts!
02:19	Raynes	There isn't much documentation necessary. nrepl.el's README has a list of commands.
02:19	kryft	I wonder if there's an emacs tutorial for people coming from vim who intend to use evil mode. :P
02:20	Raynes	I use evil-mode. Not really coming from Vim though. I went from Emacs to Vim for a while and then back to Emacs with evil-mode for the best of both worlds.
02:20	Raynes	evil-mode is amazing.
02:21	wmealing_	how can it not be ?
02:21	kryft	Raynes: "Best of both worlds" is precisely what I'm thinking of. I really love the vim interface, but the lispy customizability of emacs is also very appealing (both for the mwahahaha the editor is my oyster and for things like SLIME)
02:21	kryft	wmealing_: Well, I was somewhat underwhelmed by viper mode back in the day
02:21	Raynes	Yeah, vimscript is a hideous fire breathing dragon.
02:23	kryft	Raynes: I take it that evil-mode works nicely with SLIME and other major modes?
02:23	Raynes	I certainly haven't had any problems with it.
02:23	kryft	Great.
02:27	kryft	Raynes: How much of vim does evil (not) implement? Did you miss anything?
02:55	vak	hi all
02:56	vak	are there any ubuntu ppa for clojure 1.4?
02:57	scottj	vak: not that I'm aware of. most people install clojure on a per app basis using leiningen
02:58	vak	scottj: oh... isnt this leiningen also clojure-based?.. so, first I'd need clojure anyway?..
02:59	scottj	vak: when you run the leiningen install command I think it downloads clojure to run itself. you just need java installed.
02:59	TheBusby	Raynes: in the lazybot github plugin, where are you setting polling frequency?
02:59	vak	(I have two JVM implementations installed)
03:01	vak	scottj: but then I guess, one gets an old clojure 1.1, because it is the current one in ubuntu 12 right now
03:01	scottj	vak: nah. lein will install whatever version it needs, and then when you create a project you specific which version you want in project.clj
03:02	vak	scottj: oh, sounds cool
03:06	clgv	vak: go for lein2 ^^
03:07	clgv	vak: to be more pecise lein will not only install what it needs, it installs for you the clojure version you need in the project
03:07	vak	clgv: thank you!
03:10	Kneferilis	lein new life doesn't work, I get a message: \leiningen\technomancy-leiningen-d254dae\...lein-classpath was unexpected at thi s time.
03:11	ro_st	anyone using datomic who can tell me if it's possible to identify a particular time when an attribute on an entity was a particular value?
03:12	ro_st	select @time = time where version = 5; select * from entity where time = @time; to put it in sql terms
03:12	Kneferilis	in windows, lein new life doesn't work, I get a message: \leiningen\technomancy-leiningen-d254dae\...lein-classpath was unexpected at thi s time.
03:13	Kneferilis	any ideas?
03:13	ro_st	i plan on storing version data for a git repo in datomic and i'm wondering how to query data for past versions
03:14	Kneferilis	I mean, that happens with leiningen
03:14	clgv	Kneferilis: probably faulty installation. maybe PATH issues?
03:15	Kneferilis	clgv: maybe, don't I only have to have path for wget?
03:15	clgv	Kneferilis: which IDE are you using?
03:15	Kneferilis	clgv: no IDE, I am just trying to make a project with leinengen
03:16	clgv	Kneferilis: which IDE do you plan to use? there might be a painless shortcut to your issue depending on the answer ^^
03:17	Kneferilis	clgv: I am not familiar of clojure IDEs at the moment.
03:18	clgv	Kneferilis: if you like to use eclipse you can install Counterclockwise which has builtin leiningen support and works out of the box after installing counterclockwise plugin in eclipse
03:18	Kneferilis	clgv: I can do that at home
03:19	Kneferilis	thanks clgv
03:19	clgv	but sooner or later you will have to revisit the leiningen install when you want to build jars or uberjars of your project. that's not supported by CCW, yet
03:20	clgv	Kneferilis: but there are short howtos for setting up leiningen on windows. the only special things I remember are installing wget and setting paths
03:21	clgv	any clojure.zip expert here? I have a tree structure which I want to edit recursively but the result shall be multiple trees generated from the starting one. is that possible. currently I doubt it from what I read
03:23	tomoj	you want the changes at each loc to appear in the other locs?
03:24	clgv	tomoj: I want to do something similar to a cartesian product but on that tree
03:25	clgv	guess I have to make a 4clojure task out of it to get the most elegant solution ;)
03:26	tomoj	you can surely return multiple locs from a recursive function of a loc
03:27	clgv	well the question is, if zipeprs are the mean to express it easily. currently, I think the solution using zippers will be really complicated. but maybe I dont understand them that well
03:28	ro_st	do you want the same zipper to return multiple trees at once?
03:28	ro_st	because i don't think they do that
03:28	clgv	I want a function to return all those trees at once.
03:29	ro_st	i think you'll have to compose multiple calls into the zip fns
03:29	clgv	so my guess that it would get complicated is right? ;)
03:29	ro_st	afaik, the zipper makes doing a single pass of edits and returning the combined result easy
03:30	clgv	ok. so they would be the right choice to get one edited tree
03:30	ro_st	well, if you can write the zipper fn that does one iteration, then mapping that fn over some list can't be a big stretch
03:30	ro_st	yes, i think so
03:30	clgv	ro_st: the problem is that you have to return the tree and residual tree to be able do the next step
03:31	clgv	I'll try it different then
03:31	ro_st	please do take what i'm saying with a pinch of salt. i'm hardly an expert :-)
03:34	tomoj	a cartesian product of the tree with itself?
03:35	clgv	tomoj: nope the tree contains valuesets in its leafs
03:36	tomoj	interesting
03:36	clgv	I have an overcomplicated algorithm for it.
03:37	clgv	but now I changed the data representation and have to adapt it - so the thought to rewrite it more easily occured
03:42	Sgeo	Is it just me or is https://github.com/swannodette/enlive-tutorial/blob/master/src/tutorial/scrape1.clj rather non-functional
03:42	Sgeo	I feel like perhaps hn-headlines and hn-points should take arguments
03:42	Sgeo	Rather than using global variables
03:43	ro_st	it's not a global variable
03:43	ro_st	it's a constant :-)
03:43	ro_st	if it were production code, then it'd be an arg. but in this tut, the url will only ever be HN
03:44	Kneferilis	clgv: thanks for the help, I will try installing lein again at home, I don't know why it doesn't install correctly at work pc
03:45	Sgeo	Of course, I shouldn't be one to talk
03:46	Sgeo	I recently wrote a Tcl script that has 3 functions that are identical in all ways but name
03:46	clgv	Sgeo: for backup purposes? :P
03:46	Sgeo	Because I have a dispatcher that dispatches to a function named partially by ... long story
03:47	Sgeo	But in the case of these three possibilities, the code I need is the same
03:52	clgv	Sgeo: why not one function and three dispatcher stups that call that function?
03:52	Sgeo	Good idea, although I was thinking more "default function" because this code is sort of default, but yeah, I could do that
03:53	Sgeo	There are many, many other places where I need to just pull stuff out into functions
03:53	Sgeo	But the code is already sort of in production and hard to deploy to
03:53	Sgeo	(And by "production", I mean servicing one IRC channel of maybe 20 people)
04:07	tomoj	clgv: hmm, does this really work? https://gist.github.com/d46b590ea57036f41cb5
04:08	tomoj	probably could be written better..
04:13	tomoj	seems to be broken in the case where the root is a set
04:34	lpetit	clgv: hi
04:36	lpetit	There's a new paredit command submitted. Namely "paredit splice sexpr", where "(foo (bar \| baz) quux)" -> splice sexpr -> "(foo bar \| bad) quux)". On OSX, it's been bound to the "Ctrl + S" keyboard shortcut. If you're using Windows or Linux, would you pleas check what an appropriate keybinding could be used?
04:43	hyPiRion	lpetit: It's already bound on M-s
04:44	lpetit	hyPiRion: oh sorry, I was talking about Counterclockwise for Eclipse.
04:45	hyPiRion	lpetit: Oh, paredit for Eclipse? Neat.
04:46	lpetit	hyPiRion: yeah. Been there since a long time. Recently Tom Hickey submitted a patch for adding one of the commands which remained to be ported : splice sexpr
04:55	Fossi	whatwherewhat?
04:55	Fossi	where can i get paredit for eclipse?
04:56	Fossi	ah, counterclockwise required?
04:59	lpetit	Fossi: paredit.clj is integrated in counterclockwise. Works for Clojure files in Eclipse, once you've installed paredit. Is there something preventing you from doing so?
06:14	clgv	oh it's "CCW Thursday" :D
06:15	clgv	lpetit: btw. the leiningen hooks patched worked as expected and I love the auto completion in the beta
06:16	lpetit	clgv: glad to read that :-D
06:17	clgv	lpetit: do you have a plan what needs to be done until the next stable release?
06:17	lpetit	clgv: not much. Expect the next stable release today or next thursday
06:17	clgv	lpetit: that's the kind of information I was looking for ;)
07:03	clgv	lpetiti: how did you resolve #385?
07:03	clgv	lpetit: ^^
07:05	lpetit	clgv: it's not marked as "resolved"
07:05	clgv	lpetit: ah! just listed as to do next ^^
07:20	Kneferilis	lein can't create projects at my work pc, is there another way to compile and run clojure code?
07:20	Kneferilis	(lein outputs an error message and exits)
07:23	Kneferilis	I mean, maybe there is a lightweight ide that allows you to write clojure code and run it?
07:26	Kneferilis	I wil give lein a shot at my virtuabox ubuntu.
07:27	algernon	what's the error message?
07:27	ro_st	Kneferilis: light table
07:28	ro_st	turnkey clojure coding
07:32	jowag	Hi, why there is a need for cljs.core.truth- in CLJS? isn't JS's "if" compatible with clojure's one?
07:35	clgv	Kneferilis: did you follow any howtos on setting it up under windows yet?
07:35	clgv	with lein 1.7 I just put the lein script in a folder alongside with wget and then added this folder to the path
07:36	clgv	after that it worked with lein 1.7 - I guess with lein2 thats similar
07:37	Kneferilis	algernon: \leiningenWorking\...lein-classpath was unexpected at this time.
07:37	Kneferilis	^^the error message
07:40	clgv	Kneferilis: no one cant work with that ;)
07:40	clgv	ups -t
07:42	Kneferilis	clgv: I installed wget, put wget's path to the PATH and downloaded and run lein.bat self-install
07:43	clgv	and that directly gave you that short line you posted?
07:52	Kneferilis	clgv: well, it installed then when I entered lein new project, I got that error and lein exited
07:53	clgv	there is no exception?
07:54	clgv	no stacktrace?
07:54	Kneferilis	clgv: no, that message only
07:55	clgv	so you probably get the error in the bashscript already
07:55	clgv	err bat-script
07:59	Kneferilis	clgv: I am no Windows, but I will installe lein in ubuntu and hopefully it will work
07:59	Kneferilis	*on Windows
08:15	gerry`	hello
08:16	gerry`	how to setup local git repo as dependency in lein?
08:16	gerry`	or local clojure***.jar as dependency?
08:29	xeqi	gerry`: are you building clojure from source and want to use it as a dependency in lein?
08:30	gerry`	xeqi: right.
08:32	xeqi	run `mvn install` in your local clojure checkout. That will put [org.clojure/clojure "1.5.0-master-SNAPSHOT"] into your local ~/.m2 cache which lein can then use
08:32	xeqi	assuming your on a recent clone
08:33	xeqi	and didn't change the groupId, artifactId, or version in clojure's pom.xml
08:35	gerry`	and use [org.clojure/clojure "1.5.0-master-SNAPSHOT"] as dependency in my project.clj file?
08:36	xeqi	yes
08:36	gerry`	ok,thx
08:40	firesofmay	xeqi, will this work for other libraries as well (written in clojure)? or is this only for building clojure language itself?
08:41	firesofmay	xeqi, and won't this conflict if I want to use the original library as well?
08:41	xeqi	firesofmay: if the dependency is a maven or lein project `mvn install` or `lein install` will work. otherwise if you just have a free floating jar something like lein-localrepo will be needed
08:41	xeqi	trying to use 2 vesions of the same library in the same project would conflict anyways
08:41	xeqi	~repeatability
08:41	clojurebot	repeatability is crucial for builds, see https://github.com/technomancy/leiningen/wiki/Repeatability
08:42	firesofmay	xeqi, i mean in different projects. if i want to test my new version in a new project and still use old version in other project i.e.
08:43	xeqi	firesofmay: that works fine. The jars end up in ~/.m2 under a groupid/artifactid/version scheme
08:44	firesofmay	xeqi, okay thanks for answering.
08:44	xeqi	so as long as you don't use install a jar with the same version as an already installed jar, the ~/m2 cache has both
08:45	firesofmay	xeqi, okay.
08:49	gerry`	xeqi,it works,thx.
09:18	mpan	I'm quite happy. I've finished my first school project using Clojure and it went mostly OK.
09:18	mpan	Thanks for your help, everyone!
09:22	lnostdal	hi guys, there was a new book/pdf on functional programming posted (reddit? clojure group?) recently, but i can't seem to find it .. anyone remember?
09:23	algernon	lnostdal: "Functional Programming for the Object Oriented Programmer" ?
09:23	clgv	lnostdal: the one from brian marick?
09:23	algernon	if so, https://leanpub.com/fp-oo
09:27	lnostdal	yes, that was the one i think .. ty .. anyone read it yet?
09:30	clgv	didnt he say that it's not ready yet? just preview version?
09:31	firesofmay	lnostdal, I read the first chapter, liked his style.
09:31	firesofmay	lnostdal, as a newbie to clojure, I was able to understand what reader is properly. Didn't read after that.
09:32	lnostdal	ok
09:32	clgv	so it is ready?
09:33	clgv	*complet
09:33	firesofmay	clgv, its still going through revisions/modifications, but one can read it, it has enough material to read about.
09:34	chronno	Not yet, from leanpub link: "The book is roughly 80% finished."
09:34	clgv	thx
09:45	octagon	hi, i'm curious why (symbol "#foo") does not produce an exception or error? also is there a built-in function to test whether a string can be converted to a valid (readable) symbol?
09:47	S11001001	octagon: symbol->string conversion and vice versa is isomorphic (i.e. roundtrippable), notwithstanding meta; making that be an error would throw out that nice property. No.
09:48	chouser	it's just a shame there's no readable version of such symbols
09:48	S11001001	octagon: the solution, as chouser alludes, is to make all symbols roundtrip through pr/read (again notwithstanding meta)
09:48	octagon	S11001001: you mean (= (str (symbol x)) x) must be true for all strings x?
09:48	S11001001	octagon: aye
09:49	octagon	S11001001: why is that an important property? it's not obvious to me.
09:50	S11001001	octagon: if you're working with data, and in some situations you need it in one form, and in some another, you know you can apply isomorphisms willynilly, secure in the knowledge you're not throwing out data
09:53	S11001001	octagon: many other invariants arise; for example, given any isomorphism "iso", (= (iso x) (iso y)) if and only if (= x y).
09:53	octagon	S11001001: Interesting, thanks, especially the last example.
09:55	AWizzArd	In one of my projects I have multiple input formats for data. I want to compile them all into separate modules. Will I need N (Leiningen 2) project.clj files when I want to produce N jars? Or can I instruct Leiningen to compile N .clj source files each into their own single .jar?
09:57	gtrak	(karma nrepl.el)
09:58	hyPiRion	$karma nrepl.el
09:58	lazybot	nrepl.el has karma 1.
09:58	gtrak	quick poll, is switching to nrepl.el worthwhile atm if you're used to swank? I see the swank-clojure github recommends it.
10:03	clgv	AWizzArd: uhh, that crying for a custom leiningen task. dont you think?
10:03	chouser	AWizzArd: or perhaps you can have N profiles instead?
10:05	clgv	chouser: with filters on the source files?
10:06	chouser	yeah, I don't know if it would work, just an idea I've been meaning to eventually explore.
10:07	clgv	otherwise a leiningen task with :data-format-files [ ... ] should be possible anyway
10:07	clgv	if the other idea fails, I mean
10:08	cemerick	AWizzArd: Yes, multiple profiles will work (probably with an alias as well, so as to make the `lein` incantation to run all of them easy to remember).
10:09	cemerick	AWizzArd: Here's a real-world example, FWIW: https://github.com/cemerick/friend/blob/master/project.clj
10:09	cemerick	chouser: ^^
10:09	gtrak	hoow the heck do I use nrepl.el with a lein project?
10:10	cemerick	gtrak: M-x nrepl-jack-in
10:10	hyPiRion	gtrak: install nrepl as written on the github repo, and run nrepl-jack-in
10:10	gtrak	I get REPL started; server listening on localhost port 45228 \n Exception Unsupported option(s) supplied: :headless clojure.core/load-libs (core.clj:5293) \n clojure.core=>
10:11	gtrak	ah, do I need to add it to the project deps?
10:11	chouser	cemerick: ah, neat.
10:11	cemerick	gtrak: sounds like an old rev of lein? What version are you using?
10:11	gtrak	1.7.1
10:12	cemerick	You need to be on a v2.x preview.
10:12	cemerick	at least AFAIK, anyway
10:13	gtrak	I see
10:15	gtrak	so I'd need a little plugin or something if I wanted to use it.
10:22	mpenet	Is there a slime-compile-defun equivalent available in nrepl ?
10:23	mpenet	from looking at the readme it seems not
10:23	mpenet	(C-c C-c in slime)
10:24	AWizzArd	cemerick: good idea, thanks.
10:25	AWizzArd	chouser: also thanks for the idea :-)
10:25	mpenet	C-M-x seems quite similar, minus the flashing + output target I believe, anyway, I just need to try it once again
10:27	clgv	someone should start writing a bookchapter about leiningen configuration ;)
10:30	naeg_	what's the difference between * and *'?
10:32	cemerick	clgv: Leiningen could easily be its own book at this point.
10:32	TimMc	It doesn't need one, luckily.
10:32	clgv	cemerick: I didn't dare for that statement so I chose the chapter ;)
10:32	cemerick	Though http://clojurebook.com does cover the basics of Leiningen. :-)
10:33	cemerick	TimMc: Dunno about that. It's a remarkably flexible and capable, but there's a ton of knobs.
10:35	TimMc	Hmm, are Clojure and Lein books "complements", economically?
10:35	TimMc	The author of a Lein would want Clojure info to be as available as possible, and vice versa, since each adds value to the other.
10:35	OE	Raynes: do you have any usage examples for irclj before I dive into it?
10:36	cemerick	A Leiningen book would be even less economically viable than a Clojure one. I imagine it'll be years before we ever see one, if ever.
10:37	clgv	could be an open book, though.
10:38	cemerick	open book?
10:38	xeqi	is there a wrap-escape-params middleware for ring yet?
10:38	`fogus	Right. I'd pay for a LeanPub Lein book
10:38	weavejester	xeqi: What would wrap-escape-params do?
10:38	AWizzArd	`fogus: is Marginalia already compatible with Leiningen 2?
10:39	clgv	cemerick: I mean someone starts a documentation project where others can participate.
10:39	cemerick	clgv: I think you mean https://github.com/technomancy/leiningen/tree/master/doc :-P
10:39	cemerick	Of course, pull reqs welcome :-D
10:40	clgv	cemerick: well, if it were complete you wouldnt need that book ;)
10:40	cemerick	Perhaps.
10:40	clgv	but for basic needs it's pretty good
10:41	cemerick	It's a poor book that can be replaced with technical documentation though, even good stuff.
10:41	xeqi	weavejester: html escape them so I wouldn't need to (h ...) all over the place and open an XSS attack when I forgot
10:41	xeqi	possibly with a (raw ...) for the underlieing param
10:41	xeqi	sorta like http://yehudakatz.com/2010/02/01/safebuffers-and-rails-3-0/
10:42	TimMc	xeqi: You're talking about html-escaping querystring parameters as they come in? :-/
10:42	weavejester	xeqi: That wouldn't be Ring, that would be Hiccup. The problem is that would require a fairly major redesign of Hiccup, which is ongoing but not finished.
10:43	weavejester	Hiccup currently outputs things directly as strings, which is fast but can't distinguish between values and HTML code produced from other HTML functions.
10:43	xeqi	TimMc: pretty much yes
10:43	weavejester	To solve that, the compiler needs to be redesigned to output a DOM
10:44	weavejester	Which would be slower, but I think I'm resigned to that.
10:44	xeqi	weavejester: heh, I was trying to avoid that. I figured html escaping the params in a middleware would cover %95 of my cases
10:44	xeqi	... 95%
10:45	xeqi	though for clojars I guess alot of the strings pushed through the UI do come from the FS instead of params
10:45	Kneferilis	hello, is there a package like XAMMP for clojure?
10:45	weavejester	But surely you only want to html-escape your params when they're inserted into the HTML
10:45	Kneferilis	I admit that I will try lein in ubuntu at home, I was just wondering.
10:49	xeqi	hmm, perhaps you're right
10:49	xeqi	even doing (raw ..) for things like putting in a db, won't help on the otherside
10:49	scriptor	Kneferilis: I don't think so, at least haven't heard of anything bundled up like that
10:50	Kneferilis	scriptor: ok
10:52	rodnaph	hi - does anyone know of any tools for producing code coverage reports for clojure code?
11:00	jaley	guys - is this an idiomatic way to implement a producer/consumer style queue? https://www.refheap.com/paste/4903
11:00	jaley	I got the query-and-alter fn from a planet.clojure.com blog. I'd be surprised if there's not a more straight-forward way of doing it...?
11:02	rodnaph	jaley: i did a similar thing recently just doing first/rest in a dosync - https://github.com/rodnaph/weare/blob/master/src/weare/jobs/core.clj#L18 - not sure how idiomatic/correct it is tho
11:03	jaley	rodnaph: won't you potentially process a job many times if the transaction is retried?
11:05	rodnaph	jaley: ... hmmm yes, this is what i was worried about, ack...
11:06	TimMc	xeqi: You really, really don't want to encode early.
11:07	abalone	is LightTable open for people to write plug-ins ? or is that for later ?
11:07	TimMc	xeqi: Amusing consequence from a former place of employment: http://community.crutchfield.com/search/SearchResults.aspx?q=amp
11:08	TimMc	weavejester: If only String could carry metadata...
11:09	uvtc	TimMc: ouch. :)
11:11	TimMc	And there's nothing like a JSON API spewing HTML entities.
11:12	seneth	Has anyone moved from a staticaly typed language to clojure and now wishes clojure would have types and all good things that come with them?
11:13	jaley	seneth: yes, I particularly miss painting myself into a corner every day :)
11:13	rodnaph	seneth: did u see this https://github.com/frenchy64/typed-clojure
11:13	nDuff	seneth: Given as there are people working on Typed Clojure, the answer is pretty obviously yes, some such people exist.
11:22	TimMc	seneth: Sure. I miss having static typing every time I end up passing a value of the wrong type through a chain of 5 functions, then spend 20 minutes adding preconditions to everything.
11:25	S11001001	! Array(1,2,3): Array[Unit]
11:26	S11001001	wrong chan...
11:35	clgv	seneth: seldom. I wished in the first months with clojure. but that wish vanished over time
11:36	clgv	I wonder if typed-clojure will be continued after GSoC
11:43	algernon	clgv: considering GSoC pencil's down already happened, and the repo still has comits - I'd think it is safe to say: yes, it will be
11:44	clgv	algernon: I know that GSoC officially ended. we'll see whether it continues to something usable...
11:45	algernon	clgv: it's also the subject of his dissertation, so I expect it will evolve into something usable :)
11:47	clgv	ah good ^^
11:55	klang	starting at https://github.com/quephird/mixing-java-and-clojure a "lein170 uberjar" will give the expected result, but creating the uberjar with lein200 will result in a ClassNotFoundException where java complains about not being able to find main .. I have overlooked something ..
11:58	raek	klang: that is a lein 1.x project. you can run the "lein200 precate" plugin on it to see what you need to change in order to make it a lein 2.x project
11:58	zakwilson	http://pastebin.com/auqEvM7J <-- I found this Sobel edge detection library on pastebin and can't find it anywhere else. Does it belong to anybody here?
11:59	cemerick	I thought I saw something go by about :require-macros not being necessary anymore…not so, I guess?
11:59	jcromartie	Could not transfer artifact net.sf.json-lib:json-lib:pom:2.4 from/to central (http://repo1.maven.org/maven2): Checksum validation failed, no checksums available from the repository
11:59	raek	in this case I think it's the :java-source-path "src/java" that needs to be changed into :java-source-paths ["src/java"]
11:59	jcromartie	should I use a different repo?
12:01	cemerick	jcromartie: if that project doesn't publish checksums, then you'll need to disable checksum verification for the repo in question
12:01	klang	raek: thanks, that gives me some straws to pull.
12:04	jcromartie	cemerick: and how do I do that when using leiningen?
12:06	mpenet	jcromartie: there is an example here https://github.com/mpenet/tardis/blob/master/project.clj
12:07	mpenet	that's with lein2
12:07	mpenet	not sure it works the same way with 1.7*
12:08	klang	raek: that precate plugin really is invaluable! wow!
12:11	technomancy	lein1 doesn't really care about checksums
12:11	technomancy	jcromartie: if a project is missing checksums be sure to open a bug report
12:14	technomancy	heh; the first comment on Marick's book is someone asking him to re-write it in scala... https://leanpub.com/fp-oo
12:14	yacin	i've been away from clojure for a bit but is defnk still around? i'm not sure how to find replacements after the restructuring of clojure-contrib
12:15	deeplloyd	hi all
12:15	S11001001	yacin: defnk is useless now
12:15	yacin	oh?
12:15	S11001001	yacin: read up on the latest improvements in destructuring
12:15	S11001001	yacin: defnk is now an advertisement against language design by popularity contest
12:16	clgv	yacin: defnk was for keyword args?
12:16	raek	,((fn [& {:keys [a b]}] (+ a b)) :a 1 :b 2)
12:16	clojurebot	3
12:16	clgv	yacin: you can check if that lib fits you: https://github.com/guv/clojure.options
12:17	raek	yacin: ^
12:17	yacin	raek: ah interesting. i imagine having defaults is less simple?
12:17	yacin	haha, thanks everyone
12:17	yacin	most helpful irc channel
12:18	cemerick	technomancy: leave it to the internet
12:18	clgv	yacin: defaults is messy by adding an :or {:a 10, :b 12} or such ^^
12:19	technomancy	cemerick: "I like your book; could you write a different one for me?"
12:19	raek	yacin: you can have defaults like in ordinary map destructuring: {:keys [a b], :or {a 1, b 2}}
12:19	clgv	oops. symbols ^^
12:19	raek	,((fn [& {:keys [a b], :or {a 1, b 2}}] (+ a b)))
12:19	clojurebot	3
12:22	yacin	raek: thanks!
12:23	djanatyn	is there a non alpha-numeric character I can use as the function #(float (/ % %%))?
12:25	raek	djanatyn: are you asking for another way of writing (fn [x y] (float (/ x y)))?
12:25	djanatyn	I'm asking if there's something convenient I could defn that to
12:26	djanatyn	I need to use that in the repl frequently
12:26	djanatyn	right now I'm using a function called #'$
12:26	djanatyn	is there a way to override #'/ behavior?
12:26	djanatyn	I'm in a seperate namespace.
12:27	hyPiRion	(ns namespace (:refer-clojure :exclude [/])) ... (defn / ...)
12:28	hyPiRion	It's still available as clojure.core//
12:28	djanatyn	thanks
12:29	hyPiRion	djanatyn: By the way, you know about incanter, right? Just in case you want some statistics library to work with.
12:29	djanatyn	hyPiRion: I've tried getting incanter to work on windows without much luck
12:30	clgv	djanatyn: what failed?
12:30	hyPiRion	Are you using leiningen?
12:30	djanatyn	clgv: mongodb, I think
12:30	djanatyn	hyPiRion: yes. I'm sorry, I can't run lein right now; the school network has a lot of restrictions and will probably not let lein through
12:30	clgv	djanatyn: oh, never used it with incanter
12:31	djanatyn	even clojure.org is blocked :P
12:31	technomancy	I can't believe incanter declares a dependency on mongo =\
12:31	hyPiRion	I didn't even knew it did, I must've used an old version when I used it.
12:31	technomancy	I guess maybe because it was created before the "complected" keynote? =)
12:32	clgv	technomancy: well it did not in a pre clojure 1.3 version.
12:32	djanatyn	I'll work on getting Incanter running when I get home; I've wanted to try it out for a while
12:32	technomancy	ah! no excuse then
12:33	hyPiRion	What would Incanter use mongo for anyway?
12:33	technomancy	you're probably safe declaring an :exclusion on the offending mongo dep
12:33	hyPiRion	In-memory db?
12:33	clgv	but it had an annoying dep on parallelcolt which I never used but whose classes where used in core
12:34	clgv	hyPiRion: access for datasource, I guess
12:34	hyPiRion	hm, now I got curious.
12:37	hyPiRion	Needed for incanter-mongodb. So I believe it's safe to exclude it if you're not using that package.
12:37	djanatyn	emacs is a really nice environment for a statistics class
12:37	djanatyn	clojure file on top, repl on the bottom left half, and org-mode buffer for notes on the bottom right half
12:38	tanzoniteblack	djanatyn: interesting to note that you're on irc and don't mention it in that list...
12:39	djanatyn	for IRC I'm using a web based ssh client, shellinabox
12:39	djanatyn	our school won't let you connect to irc network ports, so I have my irc client on another box.
12:40	hyPiRion	I suppose you could tunnel it over https.
12:40	TimMc	djanatyn: Can you SSH?
12:40	S11001001	djanatyn: freenode offers stacks of alternate ports
12:41	Narvius	Hello, I have a question about seesaw.
12:42	Narvius	The standard Clojure proxy has an implicit "this" for the fns defined in the proxy, but using "this" in conjunction with seesaw tells me there is no such thing as "this".
12:43	Narvius	So; How can I refer to the object itself from within a listener function in seesaw?
12:43	TimMc	djanatyn: Never mind, misunderstood.
12:44	djanatyn	TimMc: Not really; I'm actually running a web server on my host that spits out a web interface when you connect with a browser :) (shellinabox)
12:45	djanatyn	anyway, back to clojure! so I can just exclude mongodb in my project.clj file when installing incanter with lein?
12:46	S11001001	Narvius: paste?
12:47	Narvius	Pretty much just (progress-bar :listen [:mouse-pressed (fn [e] (.setValue this 50))]).
12:49	Narvius	Well, I guess I'll work around it by calling (listen) afterwards and using closures.
12:49	hyPiRion	djanatyn: Yep - it will only kill the incanter-mongodb namespace.
12:54	clgv	djanatyn: you can only install the single subprojects of incanter that you really need. e.g. for me this is incanter-core and incanter-charts
12:59	xeqi	TimMc: heh, yeah I decided it was a bad idea. Even just the inconsitencies of whats escaped vs not-escaped would be annoying
12:59	xeqi	wonder if I could do something to https://github.com/weavejester/hiccup/blob/master/src/hiccup/util.clj#L19 and make it work, worth experimenting with later
13:14	ohpauleez	cemerick: Thanks for the contributions!
13:25	thorbjornDX	has anyone had to deal with really slow repl performance before?
13:33	jcromartie	thorbjornDX: when does it get slow?
13:33	jcromartie	thorbjornDX: because it's usually perfectly snappy until you run up against JVM memory limits
13:34	thorbjornDX	jcromartie: I've found it giving me input latency when typing (2-3 seconds sometimes)
13:34	n4irc	I'm having difficulty getting leiningen 1.7.1 to start on Opensuse 12.1. It used to work, but now I get numerous problems loading, etc. as seen at http://pastebin.com/UKUJYu9a.
13:34	jcromartie	thorbjornDX: that's definitely odd… what OS/JVM?
13:34	n4irc	Does anyone know what the fix is, it used to work, and I didn't make any intentional changes.
13:36	n4irc	on a side note leiningen 2.0 worked fine when I tried it but I've got a project (twitter storm) that is not 2.0 compatible I need to build.
13:36	thorbjornDX	jcromartie: jre 1.6.0_33-b04, rhel 4 update 8
13:37	jcromartie	thorbjornDX: and how are you running the repl?
13:37	thorbjornDX	jcromartie: 'lein repl'
13:37	technomancy	n4irc: did $CLASSPATH get set maybe?
13:38	thorbjornDX	jcromartie: using "1.4.0" in my project.clj
13:39	jamieorc	looking for a lightweight way to strip all html from a given String and return only the text
13:42	n4irc	technomancy: Interesting, unset CLASSPATH and then lein appears to help. If lein is so sensitive to user's CLASSPATH and it wants to set it itself, why doesn't it just unset that value in the script or clobber it with the desired value?
13:42	technomancy	n4irc: well... as you may have noticed that's fixed in 2.0 =)
13:42	technomancy	it's just that 1.x is quite old
13:42	TimMc	like, weeks old
13:42	TimMc	ancient :-P
13:42	technomancy	scores of weeks!
13:43	n4irc	technomancy: It looks like my last message was garbled. I fixed my version of 1.7.1
13:44	technomancy	n4irc: it's a shame that storm requires 1.x; I wonder if there's any reason preventing them from upgrading
13:45	technomancy	oh, that's silly; it looks like they just haven't bothered to run precate on it yet
13:45	technomancy	the heck, guys
13:45	thorbjornDX	jcromartie: could this be an issue of running in a vm?
13:46	jcromartie	thorbjornDX: it could be
13:46	jcromartie	thorbjornDX: however my Ubuntu VM is faster when running Clojure than the Mac OS X host!
13:46	jcromartie	thorbjornDX: what is your memory setup?
13:47	technomancy	thorbjornDX: is this lein2? is `lein trampoline run -m clojure.main/main` also slow?
13:47	thorbjornDX	jcromartie: about 3GB
13:47	technomancy	sorenmacbeth: hey, do you work on storm?
13:47	russfrank	learned clojure, now trying to learn scheme.. its much harder
13:48	n4irc	technomancy: storm appears to have a pull request in to do this. Our group is more of a storm user than core storm developer.
13:48	technomancy	n4irc: oh, cool
13:49	thorbjornDX	technomancy: that seems a bit faster, but I don't have a good benchmark really
13:49	thorbjornDX	(I'm pprinting a hash-map :P)
13:49	technomancy	thorbjornDX: there were some bugs involving memory usage with tons of output in the repl that should be fixed in preview10
13:51	llasram	Is there an nrepl client + integration for vim yet?
13:51	thorbjornDX	technomancy: 'lein repl' slams my cpu to 100% and uses up about 100MB from what I can see
13:51	llasram	Not that I touch the stuff myself. It's for a co-worker
13:51	thorbjornDX	technomancy: when I run a pprint, I get the same type of cpu usage
13:52	technomancy	llasram: supposedly in-progress
13:52	bordatoue	hello
13:52	paxan	noob question: how do I execute midje test fixture straight from Emacs (using nrepl thingie)
13:52	paxan	?
13:52	tanzoniteblack	thorbjornDX: does it slam your cpu if you do it in a non-project folder (i.e. lein doesn't load any other files)
13:52	yanne	technomancy: is the vim-nrepl supposedly in-progress in public?
13:52	llasram	Yeah, everything I'm seeing with the google is from several months ago. Maybe I'll just talk him into switching to Emacs
13:53	bordatoue	could anyone tell me how to load clojure.contrib.repl-utils and invoke the function show from repl
13:53	technomancy	yanne: couldn't tell you, sorry
13:53	technomancy	all I know is it uses haskell
13:53	llasram	wheeeee
13:53	bordatoue	i am using clojure.1.3 , it seem to fail to load repl-utils
13:53	thorbjornDX	tanzoniteblack: when loading the repl? yes
13:53	bordatoue	will IllegalstateException
13:53	llasram	~contrib
13:53	clojurebot	Monolithic clojure.contrib has been split up in favor of smaller, actually-maintained libs. Transition notes here: http://dev.clojure.org/display/design/Where+Did+Clojure.Contrib+Go
13:54	llasram	^^ bordatoue
13:54	bordatoue	then the question is which of these small libraries has show functions in it
13:54	technomancy	llasram: supposedly lein-tarsier is the way to go currently
13:54	technomancy	bordatoue: show is in clojure.repl IIRC
13:55	amalloy	technomancy: i don't think it exists anymore
13:55	amalloy	closest is clojure.java.reflect/reflect
13:55	thorbjornDX	is there a way to tell lein which java to use? I want to try the (old) system java
13:55	llasram	technomancy: Ah, thank you
13:56	thorbjornDX	just modify $PATH?
13:56	amalloy	thorbjornDX: LEIN_JAVA_CMD
13:56	thorbjornDX	amalloy: thanks :D
13:56	bordatoue	technomancy: it is not in clojure.repl
13:56	technomancy	oh, bummer.
13:56	bordatoue	what is happening with the show
13:57	thorbjornDX	amalloy: that worked, but I guess java 1.4.2 is a bit too out of date
13:57	bordatoue	amalloy: what was wrong with show that it was removed
13:57	amalloy	thorbjornDX: 1.5+
13:57	bordatoue	please help where can i find show function
13:57	ispolin	llasram: there's also a nailgun server plugin for lein. Haven't tried getting it to work over a network yet though: http://bit.ly/uoBsDh
13:58	bordatoue	i don't think i will make it
13:58	amalloy	bordatoue: on irc, it's rude to ask the same question once a minute. if someone has help, they will answer the first instance, when they get around to it
14:00	bordatoue	app http://dev.clojure.org/display/design/Where+Did+Clojure.Contrib+Goologise for that
14:00	thorbjornDX	weird, I had a rogue ipython process taking up 17% of my RAM
14:02	llasram	bordatoue: I believe amalloy answered your question already, actually. "closest is clojure.java.reflect/reflect"
14:03	sorenmacbeth	technomancy: I've made some code contributions, and I use it, yeah. What's up?
14:04	bordatoue	llasram: where is it mentioned based on the above link it says clojure.contrib.repl-util is migrated to clojure.repl , how did you know that show function is deprecated , is it documented any where.
14:04	sorenmacbeth	technomancy: (that was in response to your q about Storm)
14:04	bordatoue	amalloy: appologies for the rudness
14:04	technomancy	sorenmacbeth: just wondering if there were any specific blockers around lein2 support
14:05	sorenmacbeth	technomancy: Ok, I'll take a look and see. I'll ask Nathan as well
14:05	technomancy	eh; just curious if you knew off the top of your head
14:05	technomancy	lein1 is really starting to show its age
14:06	sorenmacbeth	yeah, there are a bunch of projects that I'd like to move over the lein2 actually.
14:06	llasram	bordatoue: Migrated apparently doesn't necessarily mean migrated entirely. I don't know why it was rejected, but you can get most of the same functionality from `reflect`, or add it to a personal utility library if you want exactly what it provided
14:06	technomancy	sorenmacbeth: definitely interested in hearing if you run into any issues with that; trying to make the migration path as smooth as possible
14:06	thorbjornDX	`lein help` takes almost 20 seconds, is that normal?
14:07	bordatoue	thanks llasram
14:07	technomancy	thorbjornDX: if you have a lot of plugins and a slow drive it's possible
14:07	technomancy	it has to load every single task, so it's the slowest of all possible lein tasks
14:08	sorenmacbeth	technomancy: looking at the project.clj, I don't see any reason it couldn't be moved to lein2.
14:08	thorbjornDX	technomancy: no plugins, I guess nfs could slow me down
14:08	technomancy	thorbjornDX: yeah, it's all IO-bound
14:08	sorenmacbeth	I just recently moved `lein` on my dev box to point to lein 2 to encourage me to update my old code
14:08	Kneferilis	hello
14:08	Kneferilis	now at home pc I managed to install and create a project on Win 7 64bit and on Ubuntu 11.01
14:09	Kneferilis	*11.10
14:09	Kneferilis	with lein
14:09	Kneferilis	my question now is, how do I run this project?
14:09	Kneferilis	for linux, better, because I want to learn more for Linux
14:11	tanzoniteblack	Kneferilis: within the terminal, you should be able to run "lein run" in the directory lein created for the project to run it
14:11	tanzoniteblack	Kneferilis: or is there something else you meant?
14:12	Kneferilis	tanzoniteblack: yes, thanks, that was what I meant
14:12	Kneferilis	now I am getting error No :main namespace specified in project.clj
14:12	technomancy	Kneferilis: it doesn't really make sense to run a newly-created project
14:12	technomancy	it's not going to do anything
14:13	Kneferilis	technomancy: how do I make my project to print out Hello World!
14:13	Kneferilis	?
14:13	tanzoniteblack	Kneferilis: if you're just starting with clojure, it might make more sense to run "lein repl"; this will pull up a repl that you can use to experiment with clojure a bit
14:14	technomancy	agreed; repl's a better place to start
14:14	technomancy	at some point you'll want to read through `lein help tutorial`
14:15	Kneferilis	yes, thanks, I am using repl now
14:15	Kneferilis	technomancy: thanks
14:17	ispolin	llasram: my bad, i'm also using lein-tarsier now. Apparently i switched over to it at one point and completely forgot that i did X_X
14:17	llasram	ispolin: Ha! No problem. :-)
14:19	thorbjornDX	what's the best way to return a nested hash-map with a few keys dissociated (down a few layers)?
14:20	technomancy	thorbjornDX: (update-in my-map [:key1 :key2] dissoc :key3 :key4)
14:20	amalloy	(update-in m [a b c] (dissoc x y z))
14:20	amalloy	er, but like technomancy said instead of me
14:20	thorbjornDX	,(doc update-in)
14:20	clojurebot	"([m [k & ks] f & args]); 'Updates' a value in a nested associative structure, where ks is a sequence of keys and f is a function that will take the old value and any supplied args and return the new value, and returns a new nested structure. If any levels do not exist, hash-maps will be created."
14:21	thorbjornDX	cool, thanks technomancy, amalloy
14:27	dysinger	anyone here experienced with Jackson Mapper? I created a gen-class which I thought I had working yesterday. Today I'm stumped. Jackson won't load it https://www.evernote.com/shard/s17/sh/59e3893e-7f39-4687-9767-3d30fe07d282/cd395acb15e4351f4e72314b5d63a26a but clojure and javap do just fine https://www.evernote.com/shard/s17/sh/29c6a25e-ad1b-4e48-830c-03a99e27e744/6696b91c0fbbcdc35ced971174821ca2
14:27	dysinger	https://www.evernote.com/shard/s17/sh/c55027ce-4236-4c3d-8b88-e396753b2e8c/ea113e6df06b5ec61a6e08668832c49c
14:29	S11001001	dysinger: yeah, I've jackson mapped; you might need to load the class yourself before dropping to jackson
14:29	dysinger	Cripes ok
14:32	nickmbailey	jk:q
14:32	nickmbailey	oops, not vim
14:34	dysinger	emacs, not vim
14:34	casion	if I have a seq of vectors of < n size, what's would perhaps be the best way to right align them into a lazy-seq of vectors of n-size?
14:35	chouser	map
14:35	chouser	concat
14:35	casion	say turn ([2 3] [3 4 5] [1 2 3 4] [1 2]) into ([0 0 2 3] [0 3 4 5] [1 2 3 4] [0 01 2])
14:35	chouser	repeat
14:36	chouser	do you know the max width initially, or must the input seq be fully realized to figure that out and return the first output vector?
14:36	casion	chouser: I know the max width. It's always 4 actually
14:37	chouser	(map #(concat (repeat (- 4 (count %))) %) input) ;untested
14:37	chouser	(map #(concat (repeat (- 4 (count %)) 0) %) input) ; still untested
14:38	amalloy	i kinda like ##(for [coll '([2 3] [3 4 5] [1 2 3 4] [1 2])] (take-last 4 (concat (repeat 4 0) coll)))
14:38	lazybot	⇒ ((0 0 2 3) (0 3 4 5) (1 2 3 4) (0 0 1 2))
14:38	amalloy	not efficient for sure
14:39	casion	thank you for the idear
14:39	casion	ideas*
14:41	casion	I think perhaps this is the wrong way to approach the problem. I'm trying to fill a java.nio.ByteBuffer with padded values so I can reliably .getInt on the buffer
14:41	casion	working with variable bit rate audio files to convert to a stream of floats
14:42	chouser	casion: is .putInt on the ByteBuffer the wrong thing?
14:42	dysinger	p
14:42	casion	chouser: yes, I don't have the int to put
14:43	casion	I just get a byte-stream that I need to convert to ints then divide by 0x7fffffff
14:44	casion	it's much simpler when working with linear PCM because I always get to know how big each frame is, but with variable bit rate, I get frame size on the fly
14:45	casion	so I have to pad it then feed it into a ByteBuffer… I think
14:45	casion	maybe there's another approach, but that's how you deal with it in C (except you just have a byte->float function)
14:48	jparishy	Hi, so if I implement a java interface using gen-class, how do I instance it? For example, if I do so with a :name of TestClass, and then in the same file I run (TestClass.) I get a class not found exception
14:49	chouser	jparishy: you have to AOT compile your .clj file that contains gen-class
14:50	jparishy	Ahh. This I did not know, thanks
14:50	chouser	That's one of the reasons to use things other than gen-class, when possible. For implementing a Java interface I'd recommend reify or deftype.
14:56	nathanic	hello folks, is anyone around here familiar with running their own lazybot? i've been trying to run my own instance from github and it always gets a ping timeout after about 4 minutes.
14:57	llasram	jparishy: As far as I can tell, the need-to-AOT-the-file thing is an implementation detail rather than a necessity. If you check out https://github.com/llasram/shady, I have a version of gen-class which hooks into the dynamic classloading features used by deftype and reify
14:58	llasram	jparishy: Although I still ditto the advice on avoiding gen-class when you can
14:58	jparishy	k, I'm looking into using deftype instead
14:59	jparishy	appreciate the knowledge and help :)
14:59	technomancy	use reify if you can
15:04	antares_	dakrone: hey
15:14	jparishy	technomancy: By using reify do I lose having a named class?
15:15	technomancy	yeah, sadly
15:16	chouser	technomancy: why reify over deftype?
15:17	technomancy	deftype doesn't play nicely with reloading
15:19	jparishy	So trying to use reify like the docs say gives me "Parameter declaration reify should be a vector" and google can't find that string :S
15:20	llasram	jparishy: That error means you have a `defn` where you forgot the parameter vector
15:20	jparishy	Ah never mind, me being silly
15:20	jparishy	Yeah :p
15:20	llasram	Clojure has some funny ways of saying things :-)
15:20	jparishy	Mentioning the reify through me off
15:21	jparishy	threw*
15:21	llasram	Oh, I think it's a terrible error. The eye jumps to the called out value ("reify") vs the context which expresses the common error pattern
15:22	llasram	You really don't care what you had there instead of a parameter vector, just that you didn't have one
15:22	jparishy	Erm. Hm, so can reify not define new methods on the class that aren't defined in the interface it's trying to implement?
15:22	jparishy	Yep exactly
15:23	llasram	jparishy: That is a feature/limitation of both `reify` and `deftype`
15:23	jparishy	Haha.. well can reify implement more than one interface?
15:23	llasram	Yep!
15:23	dnolen	jparishy: yes, and protocols too.
15:23	jparishy	Okay, so I guess that works
15:36	dnolen	cemerick: http://github.com/emezeske/lein-cljsbuild/issues/134 should probably be a ClosureScript ticket.
15:52	xeqi	weavejester: first approximation to safe strings: https://www.refheap.com/paste/4910; over compensates for html5, javascript-tag, etc. Can you think of any other problems?
15:52	edw	Has anyone tried deploying a webbit-based (WebSockets) app to Heroku? My Clojure app runs fine locally but takes down Safari when I try to use the Herokuinstance
15:52	edw	.
15:52	cemerick	dnolen: Yeah, I see emezeske's comment. I'll see about scrubbing together a patch.
15:54	weavejester	xeqi: Well, if you have a (html …) inside a (html …) then it obviously won't work
15:55	weavejester	xeqi: But if you can avoid that...
15:55	xeqi	heh, that would break it
15:55	weavejester	The only 100% solution is to use DOMs not strings
15:59	TimMc	weavejester: What if intermediate Hiccup outputs were boxed Strings (say, RawHtmlStrings) and any normal Strings were HTML-escaped?
15:59	pandeiro	weavejester: it is not possible to do something like (context "/api" request (let [foo (get-something request)] (GET "/bar" [] "Baz"))) right?
15:59	pandeiro	b/c context and whatnot are macros, not fns?
16:00	pandeiro	i was wanting to apply a (content-type "application/clojure") to every resp to the routes under my "/api" context...
16:00	weavejester	pandeiro: It is. They're macros but not magic. They all return functions.
16:01	xeqi	TimMc: thats the direction I was thinking as well, but could be missing something
16:02	weavejester	TimMc: You'd need a final outer part to convert it back into a string, and it would impact speed. I suspect that if we're going to solve the html-escaping problem, the best approach is to do it properly rather than trying to patch the existing code.
16:02	TimMc	and then relying code could say (raw foo) to bypass escaping.
16:02	weavejester	pandeiro: If you have more than one route, be aware that let only returns the last element
16:02	weavejester	pandeiro: So you'd need (let […] (routes …))
16:02	TimMc	weavejester: Conversion of a RawHtmlString to HTML output would be a single dereference.
16:02	pandeiro	weavejester: ah so it won't work
16:03	pandeiro	yes, (routes...) got it
16:03	weavejester	pandeiro: Or (let-routes […] ...)
16:03	TimMc	I probably don't know enough about Hiccup's architecture.
16:04	weavejester	TimMc: You'd need to concatenate RawHtmlStrings though, which might be slower than a StringBuilder.
16:04	xeqi	heh, forgot String was final for a moment, subclassings out
16:04	pandeiro	weavejester: didn't know about let-routes
16:05	weavejester	pandeiro: It's a common operation, so there's a macro for it. Like defroutes is just (def … (routes …))
16:06	pbostrom	edw: I tried to deploy an aleph/websockets app to Heroku a few months ago, at the time Heroku did not support websockets, not sure if that's changed since then
16:07	weavejester	In general, my thought is that if we're going to write a Hiccup 2.0.0, it should be more than a rough patch of the existing code.
16:09	sproc	Shouldn't the size of new features drive version numbers rather than the other way around?
16:11	xeqi	breaking backwards compatibility should; and if you're going to do that, might as well do the right thing then a hack
16:11	S11001001	sproc: that would have a very unfavorable outcome from users' perspective
16:14	odd	probably a newbie question, but is there any way of "undefinining" an interface or protocol after it has been defined in the working namespace?
16:16	amalloy	no
16:17	sproc	"It's time for 2.0. Let's think of a big juicy feature to include."
16:17	odd	if you have wrongly defined it as an interface and you want to redefine it as a protocol with the same name... you have to clear the whole namespace and start over then?
16:17	dnolen	odd: hmm I wouldn't think so.
16:18	TimMc	sproc: The idea is that if you're going to make one breaking change, it's a good time to make a bunch of them.
16:18	sproc	Hopefully they were already on the to-do list though.
16:19	chouser	a protocol is kept in a var, isn't it? if co, it could be unmapped.
16:20	odd	well, it seems as if you define an interface, its name no longer refers to a var, and as such it cannot be rebound or changed in any way.. at least no way I am aware of. But I am a beginner in Clojure (although having a bit of experience with CL)
16:21	danielglauser	Stupid Emacs question, how do you comment out a function?
16:21	uvtc	M-;
16:21	odd	also, if you run ns-interns, the names of your interfaces are not shown in the resulting map
16:21	uvtc	danielglauser: Oh, whoops. That's to comment out the current region.
16:22	danielglauser	uvtc: Figured that out thanks. That works for me! I can highlight a function
16:22	chouser	oh, once you've defined an interface you may have trouble. I don't know how to get rid of an interface without exiting the JVM
16:22	odd	chouser: that's what I was afraid of.
16:22	S11001001	let's tangle clojure nses into classloader trees!
16:22	TimMc	danielglauser: #_ in front of it :-)
16:22	llasram	Aren't definterface and protocol interfaces loaded via DynamicClassloader ?
16:23	llasram	TimMc: +1
16:23	llasram	(inc TimMc)
16:23	lazybot	⇒ 15
16:23	llasram	even
16:23	dnolen	odd: chouser: but it shouldn't matter for interactive dev I think if you switch to a protocol, since you're going through the protocol and not the interface.
16:23	dnolen	odd: chouser: could be wrong about that ...
16:23	chouser	ah, that does seem likely.
16:24	odd	dnolen: well, problem is, once defined as an interface, you cannot reuse the name to define a protocol. You will have to name it something else.
16:24	dnolen	odd: hmm, that may be true - I don't use definterface much.
16:25	odd	dnolen: ok. It's not a serious problem. I am just learning the language and thought I might have missed some obvious way of doing it.
16:26	dnolen	odd: ah yeah I just tried at REPL, using definterface and then defprotocol w/ the same name does blow up.
16:27	sproc	/part/
16:28	edw	pbostrom: Yeah, that seems to (still) be the case. The answer, it seems, is to use Pusher.
16:28	gtrak	what's it mean on var-set "the var must be thread-locally bound"?
16:29	S11001001	gtrak: you have a binding on it
16:29	S11001001	,(doc binding)
16:29	clojurebot	"([bindings & body]); binding => var-symbol init-expr Creates new bindings for the (already-existing) vars, with the supplied initial values, executes the exprs in an implicit do, then re-establishes the bindings that existed before. The new bindings are made in parallel (unlike let); all init-exprs are evaluated before the vars are bound to their new values."
16:29	gtrak	oh ok
16:29	odd	dnolen: it's interesting to note, though, that if you define a protocol, its name does show up among interned symbols, and I guess it would be no problem to unintern it. Interfaces do not even show up among interned symbol. So I guess they are a somewhat different beaste entirely.
16:31	odd	22:26 <odd> dnolen: it's interesting to note, though, that if you define a protocol, its name does show up among interned symbols, and I guess it would be no problem to unintern it. Interfaces do not even show up among interned symbol. So I guess they are a somewhat different beaste entirely.
16:31	odd	oops, sorry
16:31	cemerick	are cljs tests really supposed to be run against v8 master?
16:31	pbostrom	edw: I went the path of least resistance (for me): lein on an AWS micro instance
16:31	cemerick	er, trunk I suppose?
16:31	dnolen	cemerick: you can select a tag if you like, but yes I just test against master.
16:32	edw	pbostrom: Did you use webbit?
16:32	dnolen	cemerick: also it's best to test against SpiderMonkey & JavaScriptCore as well.
16:32	pbostrom	edw: no, aleph
16:32	edw	Ah.
16:32	edw	It's all Netty down below...
16:33	cemerick	And here I thought I was some minutes away from uploading a patch. :-\|
16:35	cemerick	dnolen: seems like this is all begging to use selenium (or webdriver anyway)?
16:38	dnolen	cemerick: http://github.com/clojure/clojurescript/wiki/Running-the-tests
16:38	dnolen	cemerick: not sure why we need to involve a web browser at all for most tests. For browser REPL might be useful.
16:40	cemerick	dnolen: It's an easy way to automate the whole thing, and eliminates a contribution hurdle.
16:41	cemerick	The same thing can be accomplished by automating setup of v8, SM, and JSC, but far more work that way.
16:42	dnolen	cemerick: if you can put something together I'll check it out.
16:45	cemerick	dnolen: We'll see what comes together. I'll be a bit though, I can't justify digging into it just for CLJS-373. Would using lein be acceptable?
16:48	dnolen	cemerick: I don't see any issues with lein project.clj if it makes contributing easier. But seriously I wouldn't bother unless it really actually makes it easier. If the user has to go and download all three browsers anyway I don't really see the point.
16:50	cemerick	dnolen: The typical cljs contributor probably has all three (or, two anyway, since safari isn't available for windows anymore?) anyway. If they don't, installing a browser's a lot easier than cloning and building three different js engines.
16:50	dnolen	cemerick: you only need to build V8.
16:54	dnolen	cemerick: but as i said if you have a solution that can easily use the browsers already on a users machine - I'm all for it.
17:01	cemerick	dnolen: is a stack trace on SM expected? JSC tests clean.
17:01	dnolen	cemerick: all tests in all engines should pass
17:01	cemerick	(this is with my changes stashed, clean from master)
17:05	cemerick	ah, didn't notice the test-compile script :-P
17:06	bobbywilson0	,(max (map #(reduce + (take 4 %)) '((0 1 2 3 4)(5 6 7 8 9 10))))
17:06	clojurebot	(6 26)
17:06	bobbywilson0	I want 26 :(
17:06	bobbywilson0	er expect* 26
17:07	cemerick	If only there was some kind of convention for building and testing a codebase…
17:07	bobbywilson0	,(max (6 26))
17:07	clojurebot	#<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>
17:07	bobbywilson0	,(max [6 26])
17:07	clojurebot	[6 26]
17:07	technomancy	cemerick: crazy idea; it'll never work.
17:07	hyPiRion	bobbywilson0: ##(reduce max [6 26])
17:07	lazybot	⇒ 26
17:08	tmciver	,(apply max [6 26])
17:08	clojurebot	26
17:08	bobbywilson0	hyPiRion: ahhh, I guess I assumed that max was doing an apply/reduce like thing
17:08	bobbywilson0	tmciver
17:09	bobbywilson0	thanks
17:09	hyPiRion	ahh, where is that apply vs. reduce comment
17:10	tmciver	hyPiRion: is reduce preferred there for some reason?
17:11	bobbywilson0	hyPiRion: this? http://stackoverflow.com/questions/3153396/clojure-reduce-vs-apply I was actually just looking at it in another tab
17:12	hyPiRion	It was an irc comment made by rhickey in 2010, still relevant.
17:12	bobbywilson0	hyPiRion: ah ok, don't have that then :)
17:12	hyPiRion	Well, wherever it is - prefer reduce when you can, unless when you're concatenating strings.
17:13	hyPiRion	,(time (apply + (range 100000)))
17:13	clojurebot	"Elapsed time: 165.123472 msecs"
17:13	clojurebot	4999950000
17:13	hyPiRion	,(time (reduce + (range 100000)))
17:13	clojurebot	"Elapsed time: 146.009283 msecs"
17:13	clojurebot	4999950000
17:13	dnolen	cemerick: I'm not sure what test-compile does, I only run ./script/test
17:13	cemerick	hah
17:14	thorbjornDX	if I want something like a matrix (multidimensional vector), should I use Incanter? Or can I use some other structure
17:14	duck11232	apply + does reduce + under the covers, so all apply + gives you is more overhead
17:14	cemerick	dnolen: well, everything passed, and things look good in my interactive testing, so I'm calling it good. :-)
17:14	dnolen	cemerick: cool!
17:15	gfredericks	,(time (loop [x 0, ns (range 100000)] (if (seq ns) (recur (+ x (first ns)) (rest ns)) x)))
17:15	clojurebot	"Elapsed time: 61.059024 msecs"
17:15	clojurebot	4999950000
17:15	gfredericks	duck11232: ^ interesting that apply + doesn't use loop instead
17:16	hyPiRion	duck11232: apply using reduce under the covers? err.
17:16	duck11232	The vararg form of + uses reduce
17:17	hyPiRion	Ahh.
17:18	hyPiRion	,(time (apply str (range 1000000)))
17:18	clojurebot	"Elapsed time: 472.430258 msecs"
17:18	clojurebot	"01234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571...
17:18	hyPiRion	,(time (reduce str (range 1000000)))
17:18	hyPiRion	I believe apply will be faster here.
17:18	clojurebot	Execution Timed Out
17:20	amalloy	the answer to "should i use reduce or apply, in a scenario where they give the same results" is "it doesn't matter, just pick one"
17:24	gtrak	is there like an inherit-fixtures for clojure.test?
17:26	gfredericks	amalloy: obviously there should be a stateful function that tries reduce and apply a few times each and tracks the execution times and eventually settles on the faster one
17:32	nz-	anybody know how to setup externs with clojurescript?
17:33	nDuff	nz-: Using cljsbuild?
17:33	nz-	yes
17:33	nz-	I have <script src="http://cdn.leafletjs.com/leaflet-0.4.4/leaflet.js" type="text/javascript"></script>
17:33	nDuff	Okay. And you've written an externs file for it?
17:33	nz-	yes
17:34	nz-	but the location of the file is the problem. where to put it?
17:34	nDuff	:cljsbuild { :builds [{ :compiler { :externs ["path/to/your/externs.js"] } }] }
17:34	nDuff	I put it in src/main/externs/ myself, but then, I'm following Maven conventions for this project (don't ask).
17:36	hyPiRion	Aha!
17:37	hyPiRion	amalloy: http://clojure-log.n01se.net/date/2009-01-12.html#13:48
17:38	nz-	that helped some
17:39	nz-	do I need to make also externs file for my cljs code
17:40	nz-	now it complains about ruuvi_ui.app.load_page(); that should correspond to (ruuvi-ui.app/load-page)
17:41	nz-	it says that ruuvi_ui is undefined
17:42	jkkramer	a
17:47	SegFaultAX\|work2	I'm getting that weird timeout issue on 4clojure again.
17:48	SegFaultAX\|work2	It takes forever to start running the tests, but then by the time it gets to the last unit test, it timesout.
17:51	nz-	and my load-page looks like this: (defn ^:extern load-page [] ...)
17:54	nz-	works fine without compiler optimizations
17:55	odd	(whois sonkey)
18:00	nz-	seems that I have undeclared forward references. cljs compiler doesn't complain about then without optimizations and the thing works
18:01	nz-	is there a way to make cljsbuild to give error these kinds situations?
18:06	AntelopeSalad	does anyone have a good book on functional programming that isn't necessarily tied into clojure or any 1 language?
18:07	jcromartie	AntelopeSalad: SICP, or The Little Schemer
18:07	jcromartie	tied to Scheme though
18:07	jcromartie	but SICP will really make your head spin
18:07	AntelopeSalad	thanks
18:07	jcromartie	there are some great "eureka" moments in it
18:08	jcromartie	like when they demonstrate that if you have closures, you don't need data structures :)
18:08	jcromartie	there's a new build of SICP out there too
18:08	AntelopeSalad	is the one on github worth reading?
18:08	AntelopeSalad	or should i stick to the old one released from mit
18:08	nz-	fixing the forward references does not help
18:10	jcromartie	http://sicpebook.wordpress.com/
18:10	jcromartie	(that's the one on github)
18:10	AntelopeSalad	ok thanks
18:12	nz-	nDuff: externs seems to work if I put the extern file to closure-js/externs directory
18:12	nz-	nDuff: no need to add stuff to project.clj
18:12	jcromartie	,(every? even? [])
18:12	clojurebot	true
18:12	jcromartie	I guess so...
18:13	nDuff	nz-: shrug. I've preferred to consider closure-js to be a build artifact, cleanable and rebuildable at will.
18:16	nz-	https://github.com/emezeske/lein-cljsbuild/issues/95
18:19	nz-	are there any tools to create extern file from a javascript lib?
18:21	gf3	sjl: Ping
18:21	muhoo	/sb end
18:23	nDuff	Huh. java.util.Collections$EmptySet isn't seq-able?!
18:23	cpinera	Hi all. Has anyone had any experience running ritz-nrepl? I must be missing something in my Emacs setup, because I cannot seem to be able to reach the debugger at all.
18:25	nDuff	...no, (seq java.util.Collections/EMPTY_SET) works fine...
18:25	seancorfield	How solid is nrepl.el / ritz-nrepl? Is it ready for prime time yet or is it just a lot of "peer pressure" to move to it b/c swank-clojure is no longer being maintained?
18:26	technomancy	eh; swank isn't broken
18:26	nDuff	...but when a 3rd-party library returns #< java.util.Collections$EmptySet$1@3b2601c>, not so much.
18:26	technomancy	if you need a debugger or inspector, you probably shouldn't switch yet
18:26	technomancy	seancorfield: but nrepl.el has a nice ido-var-browse thing that slime lacks =)
18:26	seancorfield	'kthx technomancy i genuinely wasn't sure how far along ritz was
18:26	technomancy	sometimes I fall back to slime for the inspector though
18:26	clojurebot	slime-install is an automated elisp install script at http://github.com/technomancy/emacs-starter-kit/blob/2b7678e9a331d243bf32cd8b591f826739dad2d9/starter-kit-lisp.el#-72
18:26	technomancy	geez
18:27	technomancy	seancorfield: oh, I'm talking about nrepl.el specifically
18:27	technomancy	I haven't used ritz but expect it's a bit further along
18:27	technomancy	clojurebot: forget slime-install \|is\| an automated elisp install script at http://github.com/technomancy/emacs-starter-kit/blob/2b7678e9a331d243bf32cd8b591f826739dad2d9/starter-kit-lisp.el#-72
18:27	clojurebot	I forgot that slime-install is an automated elisp install script at http://github.com/technomancy/emacs-starter-kit/blob/2b7678e9a331d243bf32cd8b591f826739dad2d9/starter-kit-lisp.el#-72
18:28	technomancy	do us all a favour and pretend it never happened, k?
18:28	seancorfield	yeah, i sort of view nrepl.el + ritz as a package since i do rely on the debugger and i'm happy with slime/swank and jack-in / slime-connect right now
18:28	technomancy	ritz was designed to be used with slime
18:28	technomancy	originally
18:28	seancorfield	i haven't converted my team to emacs yet (i know, heathens!) so it's not really an important decision for us yet...
18:29	technomancy	shouldn't need to get everyone to agree
18:29	technomancy	wait are you guys still on lein1?
18:30	llasram	Well, it helps with getting people up to speed. I've got several new people getting going at my job too, and it'd be nice to present a uniform common toolset for people to start with
18:31	technomancy	it helps to have someone who knows where their towel is, or several people who know where various assorted towels may be found
18:31	technomancy	certainly less knowledge redundancy with a shared toolset =)
18:31	llasram	Oh, not complaining. Just er. Ok, I guess it was close to complaining :-). I'm advising people to use nrepl.el, but haven't switched yet myself because I don't want to restart Emacs
18:32	technomancy	that's an excellent excuse
18:32	seancorfield	technomancy: no we moved to lein2 for everything - hence my attempts to get lein-daemon working with lein2
18:33	technomancy	oh right
18:33	dnolen	cemerick: patch applied to master, thx!
18:33	cemerick	dnolen: great, thanks :-)
18:34	thorbjornDX	I have a lein question, I'm trying to add a dependency to my project, so I put [org.clojure/math.combinatorics "0.0.2"]. When I launch a repl it says that it can't find its __init.class. Do I have to take another step to install it?
18:36	technomancy	thorbjornDX: what did you try in the repl?
18:36	seancorfield	thorbjornDX: did you (require 'clojure.math.combinatorics) in the repl first?
18:36	thorbjornDX	technomancy: nothing, actually, I modified one of my source files to require clj.math.combo, and that's the one that I have set up as :main
18:37	thorbjornDX	`lein repl` immediately gives me a stacktrace
18:37	technomancy	the require form is probably wrong
18:38	thorbjornDX	technomancy: (:require math.combinatorics) ?
18:38	thorbjornDX	oh, I probably need a 'clojure' in there somewhere
18:40	thorbjornDX	seancorfield: technomancy: fixed, thanks
18:43	seancorfield	yay! glad you got it working... what are you using combinatorics for? always curious what folks are using mark's math libs for...
18:45	thorbjornDX	seancorfield: generating tiles using cartesian-product
18:48	antares_	why didn't I discover cheshire.custom before. Best of both cheshire and data.json's extensibility.
18:49	Frozenlo`	cemerick: As usual, excellent job with the podcasts! I really appreciate to hear the various clojure's voices :D
18:56	nDuff	Should I be doing something simpler rather than (reduce into [#{} some-set some-seq]) to get a set containing the members of some-set and some-seq?
18:56	nDuff	(feels wrong, but can't quite put my finger on it...)
18:57	technomancy	why not plain into?
18:57	antares_	,(into #{} [1 2 3])
18:57	clojurebot	#{1 2 3}
18:57	antares_	,(set [1 2 3])
18:57	clojurebot	#{1 2 3}
18:57	technomancy	(into some-set some-seq)
18:58	nDuff	Hmm -- "why not" is a good question.
18:58	nDuff	Ahh -- some-set can potentially be nil
18:59	technomancy	just call set on it first
18:59	antares_	,(set nli)
18:59	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: nli in this context, compiling:(NO_SOURCE_PATH:0)>
18:59	antares_	,(set nil)
18:59	clojurebot	#{}
18:59	nDuff	ahh!
19:02	amalloy	technomancy: i think (set some-large-other-set) is expensive
19:02	amalloy	in the same way that (vec some-large-vector) is expensive
19:02	technomancy	boo
19:02	technomancy	well, or then
19:03	antares_	amalloy: is a couple of hundreds of elements large?
19:04	raek	(into (or some-set #{}) some-seq)
19:05	frio	antares_: my guess is no, but i don't know what the logic is there
19:06	aperiodic	amalloy: why can't it just check if the argument is already a set/vec, and return it if so?
19:06	TimMc	nDuff: fnil
19:06	TimMc	err, I'm being silly
19:07	TimMc	Oh, and raek already gave the right answer. :-)
19:10	pobody	hello all, is anyone in here familiar with running a lazybot instance?
19:11	brehaut	~anyone
19:11	clojurebot	Just a heads up, you're more likely to get some help if you ask the question you really want the answer to, instead of "does anyone ..."
19:11	casion	that would have be so much better coming from lazybot
19:11	brehaut	im pretty sure Raynes knows something about it
19:12	pobody	i thought he might :-) but i wasn't sure if he'd be around
19:13	brehaut	you could also try #flatland perhaps?
19:13	pobody	brehaut: thanks for the idea
19:18	weavejester	Is there something in Clojure that can take a set of promises and return the first one delivered a value?
19:18	weavejester	Kinda like a "select"
19:19	Urthwhyte	filter and take first?
19:20	weavejester	I mean like the C select function. Something that tells me which promise is delivered to first.
19:20	wmealing_	weavejester: i love the idea
19:20	wmealing_	weavejester: i just can't think how to implement it
19:20	nDuff	Why not just have one promise?
19:20	technomancy	seems like you could make a promise-like macro that delivered to a shared promise first and block on that
19:21	nDuff	Also curious about the use case, and how it varies from a case where a traditional queue is appropriate.
19:21	hiredman	1.4 lets you pass in a timeout to deref
19:21	hiredman	so you could use that and a loop to roll your own
19:22	hiredman	,(doc delivered?)
19:22	weavejester	I was considering using HTTP async to query many URLs at once, and didn't want to start a thread for each.
19:22	clojurebot	No entiendo
19:22	SegFaultAX\|work2	(doc deref)
19:22	clojurebot	"([ref] [ref timeout-ms timeout-val]); Also reader macro: @ref/@agent/@var/@atom/@delay/@future/@promise. Within a transaction, returns the in-transaction-value of ref, else returns the most-recently-committed value of ref. When applied to a var, agent or atom, returns its current state. When applied to a delay, forces it if not already forced. When applied to a future, will block if computation not complete. When applied to
19:22	nDuff	weavejester: What do you do with the results from the others? Are they eventually processed?
19:23	weavejester	nDuff: Yep
19:23	nDuff	weavejester: ...sounds like the right abstraction is a queue, rather than a series of promises.
19:23	weavejester	Yeah, but http.async.client returns a promise
19:23	nDuff	Ahh.
19:24	hiredman	does it return a real promise, or just something like a promise?
19:24	hiredman	it might return something you can attach callbacks to
19:25	tanzoniteblack	Question about nrepl for you guys. If I load a very large map into memory (~6 gigs) and want to refresh nrepl to clear the memory (not important to me if the functions and such I have loaded get kept around). Is there a better way than just closing out the nrepl buffers and restarting them?
19:26	weavejester	hiredman: Looking at the source now...
19:27	hiredman	whatever http.async.client is built on definitely supports some kind of callback on the futures it returns
19:30	weavejester	hiredman: It does. But http.async.client seems to abstract that away. I think this is the first time I've seen a Clojure library that's less useful than the Java library it wraps, but maybe I'm being unkind.
19:30	hiredman	weavejester: cough really the first time you say?
19:31	weavejester	hiredman: Did you have another library in mind?
19:31	hiredman	no
19:31	hiredman	just lots and lots of wrappers everywhere
19:31	weavejester	Usually they're all pretty good, though :)
19:32	weavejester	At least the ones I've used are.
19:32	weavejester	Oh wait, looks like there are callbacks… I think...
19:32	djanatyn	hmm. I'm having trouble writing a function that determines if whatever you pass it is divisible by several numbers
19:34	frio	what are you doing djanatyn?
19:34	frio	i can think of how to solve that easily, but idk what the clojure for it would be :)
19:34	djanatyn	well, I'm trying to show my brother, who asked a question :)
19:34	weavejester	,(div 8 2)
19:34	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: div in this context, compiling:(NO_SOURCE_PATH:0)>
19:35	djanatyn	he was wondering if every composite number was divisible by 2, 3, 5, and 7
19:35	frio	(any (eq 0) (map #(modulo numerator) denominators)) is roughly what id do
19:35	djanatyn	s/and/or
19:35	frio	but idk what the actual clojure names/libraries/etc. are :)
19:35	weavejester	Well, there's mod, but I thought there was also a div
19:35	tomoj	just show him 11*13?
19:35	tanzoniteblack	,(every? #(= 0 (mod 8 %)) '(2 4))
19:35	clojurebot	true
19:36	djanatyn	tomoj: it's cooler to run a functino over a big list to demonstrate why programming is cool ;)
19:36	tanzoniteblack	,(every? #(= 0 (mod 8 %)) '(3 4))
19:36	clojurebot	false
19:36	frio	ah - % is an argument to a lambda in clojure?
19:37	frio	(i thought it had some special syntactical meaning, which is why i didn't reach for it for expressing modulo :p. /notes down)
19:37	tanzoniteblack	frio: more specifically % is an argument to a lambda in clojure that's created by the #() method
19:37	groovemonkey	beginner question: if I have (def mappy {:one []}), I can add to the vector inside with (conj (mappy :one) :something). But if it's (def mappy (ref {:one []})), how do I do it?
19:37	S11001001	frio: %? it does in some contexts, as tanzoniteblack says
19:37	frio	cool tanzoniteblack, thanks
19:38	djanatyn	tanzoniteblack: I like that solution :) thanks!
19:38	djanatyn	the every? function is cool.
19:38	tanzoniteblack	frio: we could also write that as ##(every? (fn [n] (= 0 (mod 8 n))) '(2 4))
19:38	lazybot	⇒ true
19:38	S11001001	groovemonkey: it's complicated.
19:38	weavejester	It looks like there are callbacks in http.async.client.request
19:38	S11001001	groovemonkey: are you a clojure beginner, or clojure intermediate just starting with STM?
19:39	weavejester	I kinda wish that it used something other than promises by default though
19:39	groovemonkey	S11001001: somewhere in between
19:39	groovemonkey	right now I'm fiddling around with various combinations of (dosync (alter mappy conj....
19:40	S11001001	groovemonkey: alright, well if you want to mess with refs now, go look up longer documents on dosync usage
19:40	groovemonkey	S11001001: roger.
19:40	tomoj	weavejester: already rejected aleph?
19:40	frio	tanzoniteblack: if you don't specify an argument, is it implicit/does clojure do partial application? (ie. in haskell I can do map ((+) 1) myList for incrementing)
19:41	weavejester	tomoj: Actually, I forgot aleph had a client side
19:42	zerokarmaleft	when i call gen-class, if i set :extends or :implements does that class/interface automatically get imported into the ns?
19:42	S11001001	groovemonkey: at this point I will note that I was on a small team maintaining a large (few hundred source files) clojure app, for which we used, maybe, 8 refs total, and I mean live instances of ref; we weren't as a rule particularly attached to immutability, it was just easier
19:42	tomoj	a request returns an async result, to which can attach callbacks
19:42	tomoj	s//you/
19:43	tanzoniteblack	frio: as far as I know, there's no implicit arguments unless you use "partial".
19:43	tanzoniteblack	,(map (partial + 1) [1 2 3])
19:43	clojurebot	(2 3 4)
19:44	frio	OK, cheers tanzoniteblack
19:44	groovemonkey	S11001001 OK, so maybe refs are the wrong thing. I'm just looking for a place to keep a player's inventory for a small game.
19:44	djanatyn	haha, I don't think my brother enjoyed that snippet of code as much as I did
19:44	djanatyn	thanks, tomoj :)
19:44	groovemonkey	S11001001: it's just nested maps
19:45	weavejester	tomoj: Yeah, I might go with Aleph. Channels should be pretty nice in this case.
19:46	S11001001	groovemonkey: then perhaps the functions that need to update inventory, should include an inventory->inventory function in their result, and at the loop level you could run all these functions before continuing? Or they could just include the updated inventory in their return values.
19:46	zerokarmaleft	generate-class is a hairy method O.o
19:49	groovemonkey	S11001001: thanks, I'm going to rethink this tomorrow. It's almost 2AM here, so I'm just going to make things worse if I keep going now :-D. I'll try your advice tomorrow -- thanks!
19:50	weavejester	Hm, I'm assuming the Lamina function "join" joins two or more channels together, but there's no docs and no docstring
19:51	Frozenlo`	I'm getting a weird error since yesterday when trying to start a cljs browser repl: Uncaught TypeError: Cannot call method 'appendChild' of null. Rings a bell for anyone?
19:52	Frozenlo`	It happens only when I have the browser.repl/connect in my cljs file. (Which I have reduced to the bare minimum)
19:53	Frozenlock	Here is the part of js where Chrome and Firefox choke https://www.refheap.com/paste/4917
19:56	Frozenlock	This is my punishment for rebooting my machine. Must never do it again.
20:04	thorbjornDX	how do I use '->' when I need to pass multiple arguments?
20:05	scottj	thorbjornDX: be more specific? (-> 1 (+ 2 3 4 5))
20:06	thorbjornDX	scottj: I have a fn that takes two arguments, and I want to do (-> 3 4 myfn myotherfn myfn)
20:07	thorbjornDX	scottj: ofc that doesn't work
20:07	thorbjornDX	scottj: I'd want the equivalent shorthand for (myfn (myotherfn (myfn 3 4)))
20:08	scottj	thorbjornDX: (-> 3 (myfn 4) myotherfn myfn)
20:08	thorbjornDX	scottj: ah, okay
20:13	fenton	when i use (clojure.java.io/resource "test.txt") in my clojure library, java using the jar complains: FileNotFound... does this have something to do with using the wrong ClassLoader?
20:15	antares_	fenton: more likely with what directories you have on classpath
20:17	fenton	antares_: this works fine: InputStream stream = this.getClass().getClassLoader().getResourceAsStream("test.txt");
20:17	fenton	antares_: the file IS in the root of my clojure library...
20:17	antares_	fenton: try with a clojure.lang.DynamicClassloader instance
20:18	fenton	antares_: could u elaborate a tad more...sorry clojure newbie here...
20:18	antares_	fenton: I am not sure Leiningen includes repository root to the classpath
20:18	antares_	fenton: replace this.getClass().getClassLoader(). with clojure.lang.DynamicClassloader()
20:18	antares_	new …
20:19	thorbjornDX	scottj: I ended up requiring my functions to take a vector as their argument, it suited my problem better
20:19	antares_	fenton: it's not a bad idea to use :resource-paths (lein2) and a separate directory: https://github.com/michaelklishin/pantomime/blob/master/project.clj#L8
20:19	fenton	antares_: sorry, the thing i said works, was java code calling from my java program...it works okay...just when i try to find the file from within the library itself is there an issue.
20:19	antares_	fenton: how do you run your Java program?
20:20	antares_	it may be that classpath is set differently from how Leiningen does it
20:20	fenton	antares_: at the moment just inside Eclipse for testing.
20:20	antares_	Eclipse definitely can have different defaults w.r.t. repository root from Leiningen
20:21	fenton	antares_: well the file is right there smack dab at the root of the jar...
20:22	fenton	seems when the java code calls into the clojure code, the clojure loses it...
20:22	antares_	fenton: you can check that hypothesis by using a clojure.lang.DynamicClassloader instance
20:23	fenton	antares_: so use that from inside the clojure library?
20:24	antares_	fenton: from your Java program that has clojure jar available to it
20:24	antares_	this is what Clojure typically uses and I guess io/resource can use it, too
20:25	fenton	ok let me give it a whirl, I'll report back later...mom has shown up for dinner same time! :)
20:35	ivan	zakwilson: "lozh: wondering if I can optimize this any further: original: http://clojure.pastebin.com/7fczyeXy optmizied attempt: http://clojure.pastebin.com/auqEvM7J java version (2000 times quicker) http://pastebin.com/BECUCmqH ."
20:35	ivan	https://github.com/lozh
20:36	ivan	the magic of googles ;)
20:44	jhowarth	I have several functions I want to apply to a map and return an array of the results. Right now I am doing (map (fn [f] (f item)) [f1 f2 f3 ...]). Is there a more idiomatic way of doing this in clojure?
20:44	amalloy	&(doc juxt)
20:44	lazybot	⇒ "([f] [f g] [f g h] [f g h & fs]); Takes a set of functions and returns a fn that is the juxtaposition of those fns. The returned fn takes a variable number of args, and returns a vector containing the result of applying each fn to the args (left-to-right). ((juxt a b c) x) => [(a x) (b x) (c x)]"
20:44	jhowarth	thanks
20:48	amalloy	~juxt
20:48	clojurebot	juxt is a little hard to grok but it's the best thing ever
20:48	amalloy	clojurebot: regale me with more tales of juxt
20:48	clojurebot	Huh?
21:06	Hodapp	okay... I see that Leiningen automagically downloaded a bunch of dependencies, but I don't know where the hell it put them so that I can set up my class path in IntelliJ accordingly
21:06	Hodapp	blarg
21:07	mthvedt	i haven't had much luck with intellij+clojure
21:07	Hodapp	IntelliJ + Clojure seems okay - can get to a REPL and everything
21:07	Hodapp	I also installed the Leiningen plugin and I have no idea how to get to it from the IDE
21:08	Hodapp	but it's running fine from the commandline
21:08	gfredericks	why does lein-cljsbuild need to run in a "subproject"? what does that even mean?
21:08	antares_	Hodapp: lein1 puts them to ./lib, lein2 to ~/.m2/repository
21:09	antares_	gfredericks: I used it as a regular lein plugin, w/o any subprojects
21:09	Hodapp	ahhh, I kept looking for ~/.lein-somethingorother
21:09	Hodapp	thanks
21:09	antares_	Hodapp: you can make recent IDEA versions download deps from Maven
21:09	antares_	it's a little hard to find but it is somewhere on the Libraries "tab" in your project settings
21:09	gfredericks	antares_: I'm wondering wrt https://github.com/emezeske/lein-cljsbuild/issues/132#issuecomment-8286371
21:10	antares_	it is also a bit slow (well, Maven search is)
21:10	antares_	but that's what I use for key dependencies
21:10	Hodapp	right now, I don't know much about leiningen and I'm trying to work with quil, so I am just sticking with their given procedures
21:12	Hodapp	hmm, but does ~/.m2/repository do my any good for a classpath when they're all in separate dirs?
21:14	Hodapp	maybe I should just use Emacs... or ignore IntelliJ...
21:15	xeqi	gfredericks: the "subproject" is a misnomer. The eval-in-project reference means it runs with the classpath for the project, instead of say, the classpath for leiningen
21:15	gfredericks	xeqi: but also that it runs as a separate process I presume
21:15	xeqi	atm yes
21:15	gfredericks	and this has to be done because lein's classpath won't have all the sources and whatnot on it
21:16	xeqi	well, to keep leiningen and the project seperate
21:16	Frozenlock	AAAAAAAH I'm such an idiot! An entire evening wasted because I was including my js before my page body!
21:16	gfredericks	I still don't understand why emezeske says you therefore can't set dynamic vars...why couldn't you (eval-in-project '(binding [some-var some-value] ...))?
21:17	Frozenlock	May my suffering be useful to others...
21:17	gfredericks	Frozenlock: I meant to tell you not to do that
21:17	Frozenlock	gfredericks: I know, right? Sheesh
21:17	Hodapp	https://github.com/derkork/intellij-leiningen-plugin/issues/11 gaaah
21:18	Hodapp	this is why I sometimes want to stab IDEs in the face.
21:18	xeqi	Hodapp: in general emacs and eclipse w/ counterclockwise have the best support, followed by vim, followed by a large large gap
21:18	Hodapp	I see
21:19	Hodapp	what do you prefer?
21:19	Hodapp	if I switch from vim to emacs, don't I have to go be re-baptized or something?
21:19	Frozenlock	Yup.
21:19	xeqi	I use emacs, but I wouldn't tell you to do that if you aren't used to it
21:20	Frozenlock	But you don't want to go to Hell, do you? Thus you must be baptized.
21:20	xeqi	vim is decent I hear. lein-tarsier is suppose to make it easier to use clojure
21:20	xeqi	though its outside of my perview
21:21	Frozenlock	Well at least Emacs is in emacs-LISP, and clojure is a LISP. There is some similarities if you intend to customize it.
21:21	Hodapp	thanks, I will check some of these out
21:21	Hodapp	Emacs is one of those programs I never learned further than C-x C-c.
21:22	mthvedt	i use vim and tarsier, works like a charm
21:22	brehaut	Frozenlock: elisp is regular lisp with a prion disease though
21:22	xeqi	gfredericks: hmm, I would lean towards yes, but I don't understand anything about the cljs compiler. also I've only written one eval-in-project plugin and I forgot how it worked...
21:23	kovasb	https://github.com/richhickey/edn
21:23	Frozenlock	brehaut: prion?
21:23	kovasb	edn is landing
21:23	brehaut	Frozenlock: its a protein that when it binds with an existing protien creates more of itself. causes mad cow disease
21:24	gfredericks	xeqi: okay I'll leave a reply to the comment and see what he says
21:24	brehaut	Frozenlock: some people like to tell horror stories about chicken nuggets carrying prions
21:24	Hodapp	I'll check out vim-tarsier. As much as I like Eclipse for Android development, I think I might like to stay initially clear.
21:25	cgag	vim and tarsier is solid
21:25	Frozenlock	brehaut: yeah thanks about that, now I won't be able to eat chicken :P
21:25	cgag	occasionally i consider doing emacs + evil
21:25	Hodapp	I feel like a great many of the features Eclipse provides that speed up Java development are unnecessary when you are using a more dynamic / less dynamic but better-statically-typed / more concise language.
21:26	brehaut	Frozenlock: best not google the chicken nugget making machine
21:26	Frozenlock	Must... stop... myself...
21:26	Hodapp	and with that, I'm out! enjoy your talk about... food-borne illnesses and editors
21:26	antares_	are there any options for generating and parsing XML better than data.xml?
21:26	Frozenlock	Oh Nova, why do you hate my eyes? http://www.pbs.org/wgbh/nova/madcow/prions.html
21:46	Frozenlock	If I watch an atom from another namespace in cljs, do I need to use ^export or something like that?
21:46	gfredericks	I wouldn't think so
21:48	duck1123	wouldn't you only need export if you wanted to access it from js?
21:48	gfredericks	exactly
21:48	gfredericks	if the name of the var of the atom gets munged, so should your use of it somewhere else
21:49	duck1123	munging doesn't take care of accessing it as an array, does it?
21:50	duck1123	I haven't been able to get advanced mode working for me. I tried last night, but I rely on too many closure-unfriendly libs
21:51	Frozenlock	I tried to rely entirely on closure library for this reason. Sometimes I wonder if it's really worth all the trouble.
21:51	duck1123	I'm using Knockout, Jquery, and Backbone
21:52	frio	from cljs duck1123?
21:52	duck1123	yes
21:52	frio	interesting
21:52	frio	(those are libraries i typically rely on too; i haven't tried cljs yet)
21:53	duck1123	https://github.com/duck1123/jiksnu/tree/pending/src-cljs/jiksnu
21:54	Frozenlock	duck1123: GPL and Bitcoins? Man, I love you :p
21:54	duck1123	still heavily in flux. I just recently got into KO
21:54	duck1123	lol
21:55	bobbywilson0	what is the major problem with this?
21:55	bobbywilson0	,(defn chew [series] (println (reduce * (take 4 series))) (chew (rest series)))
21:55	clojurebot	#<Exception java.lang.Exception: SANBOX DENIED>
21:56	bobbywilson0	I get a stack overflow :-( but I didn't think I would with `rest`
21:56	xeqi	bobbywilson0: chew calls chew. how does it know to stop?
21:56	bobbywilson0	xeqi: uhhh, when it hits nil?
21:57	duck1123	If you want TCO, use recur
21:57	bobbywilson0	duck1123: I don't necessarily care about TCO just trying to learn stuff now
21:57	bobbywilson0	xeqi: I guess I need a condition?
21:57	metellus	,(rest nil)
21:57	clojurebot	()
21:57	metellus	,(rest '())
21:57	clojurebot	()
21:58	bobbywilson0	so the problem is just that it will call chew on (rest nil) indefinitely I take it?
21:58	xeqi	bobbywilson0: you need an (if (not (empty? series)) ...) type condition yes
21:58	Scriptor	recur is specifically for TRO, though, just tail recursion
21:58	xeqi	yep
21:58	duck1123	(defn chew [series] (when (seq series) (println (reduce * (take 4 series))) (recur (rest series))))
21:58	Scriptor	(seq (rest '()))
21:58	Scriptor	,(seq (rest '()))
21:58	clojurebot	nil
21:59	zakwilson	ivan: thanks.
21:59	ivan	np
21:59	bobbywilson0	you guys are the best! I appreciate it. not a lot of other language rooms like this
22:02	Frozenlock	Oh sure, use `def-' Frozenlock, and then wonder why your code doesn't work.
22:02	Frozenlock	I'm pretty sure there was only coffee in this mug.
22:03	duck1123	I'm sure we've all been there
22:11	jcromartie	,(doc =)
22:11	clojurebot	"([x] [x y] [x y & more]); Equality. Returns true if x equals y, false if not. Same as Java x.equals(y) except it also works for nil, and compares numbers and collections in a type-independent manner. Clojure's immutable data structures define equals() (and thus =) as a value, not an identity, comparison."
22:12	jcromartie	,(= 1 1.0)
22:12	clojurebot	false
22:12	jcromartie	"compares numbers … in a type-independent manner"
22:12	jcromartie	,(= 1.0 1.0M)
22:12	clojurebot	false
22:12	amalloy	that part is a cruel joke played on us by rich
22:12	duck1123	except for that
22:13	amalloy	you have to use == for numbers
22:13	duck1123	that used to work, but in the end, it's for the better
22:13	amalloy	duck1123: really?
22:13	amalloy	(ie, really for the better. i know it used to work)
22:13	duck1123	I'm pretty sure that worked in really early versions
22:13	jcromartie	sounds like the docs need to be addressed then
22:13	jcromartie	not a big deal right?
22:14	jcromartie	at least there's no ===
22:14	duck1123	amalloy: it's not a happy trade-off, but I'll take numbers working fast over (= 1 1,0)
22:14	mthvedt	iirc, in java, 1 != 1.0
22:15	Sgeo	,(doc ==)
22:15	clojurebot	"([x] [x y] [x y & more]); Returns non-nil if nums all have the equivalent value (type-independent), otherwise false"
22:15	jcromartie	duck1123: keep your filthy communist numbers out of here… it's "1.0"
22:15	Frozenlock	Sgeo: you should check common lisp :P
22:15	amalloy	mthvedt: wrong
22:15	mthvedt	where one is an integer and one is a bigdecimal
22:15	duck1123	but really, comparing the number 1 to 1.0 is not something that should be taken lightly
22:15	jcromartie	mthvedt: in Java 1.0 would be a double by default
22:17	jcromartie	1: int, 1.0: double, 1.0f: float, 1.0M: BigDecimal
22:18	duck1123	,(== 1 1.0)
22:18	clojurebot	true
22:18	mthvedt	,(= 1.0M 1M)
22:18	clojurebot	false
22:18	mthvedt	hm
22:19	AustinYun	oh man
22:19	duck1123	interesting
22:19	mthvedt	,(< 1M 1.0M)
22:19	clojurebot	false
22:19	mthvedt	,(> 1M 1.0M)
22:19	clojurebot	false
22:19	AustinYun	importing shit and class paths is so complicated
22:20	duck1123	AustinYun: Sometimes, but usually lein takes care of most things. What are you trying to do?
22:20	jcromartie	(map type [1M 1.0M])
22:20	jcromartie	,(map type [1M 1.0M])
22:20	clojurebot	(java.math.BigDecimal java.math.BigDecimal)
22:21	jcromartie	BigDecimal is special
22:21	AustinYun	lol i'm trying to add another file to a leiningen project, that's what
22:22	duck1123	another clojure source file? a resource?
22:22	xeqi	... a free floating jar?
22:22	duck1123	that'll do it
22:25	AustinYun	it's nothing, i'm just bitching
22:25	yankov	if you were to implement sorted sets (with scores) like this http://redis.io/commands#sorted_set in clojure, what solution would you pick? finger trees or skip list, clojure built-in sorted-map, or … ?
22:27	jcromartie	,(= (int 1) (long 1) (bigint 1))
22:27	clojurebot	true
22:28	jcromartie	this is the clincher: https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/Numbers.java#L978
22:28	jcromartie	the numbers must be in the same "category"
22:31	duck1123	yankov: That's a rough question. I would probably build it off of clojure's collection types, but as for the algorithm...
22:32	duck1123	That's a good ML question though. I look forward to reading the thread
22:35	AustinYun	ok, when do you use :require vs :use
22:37	brehaut	with 1.4 you can just always use :require and :refer as needed
22:37	brehaut	but thats not really answering your question
22:38	AustinYun	ok, i have a generic leiningen project skeleton
22:39	metellus	AustinYun: http://blog.8thlight.com/colin-jones/2010/12/05/clojure-libs-and-namespaces-require-use-import-and-ns.html I found this to be pretty helpful
22:39	metellus	I can't promise that it's completely current though
22:39	AustinYun	why does using the same (ns (:use... statement at the top of my test script not work in a different src file also in the src directory
22:40	brehaut	metellus: its been updated for 1.4
22:41	AustinYun	keeps telling me it can't find myproj/db-setup.clj in the classpath on line 1 of compiling when it's in the same folder as the main file, which is obviously in the classpath
22:42	brehaut	AustinYun: im guessing here, but i think you need to call the file db_setup.clj and have a namespace of db-setup
22:42	AustinYun	...wtf for
22:42	brehaut	hyphens arent legal characters for java identifiers, so clojrue name munges them to underscores
22:43	brehaut	like i said though, im guessing.
22:43	brehaut	being an arse will get you no help
22:44	AustinYun	there's a 90% chance i would have spent hours flailing around with various permutations of ns, in-ns, :use, :require, and :import without ever finding that out
22:45	metellus	(inc irc)
22:45	lazybot	⇒ 1
22:46	metellus	(dec docs)
22:46	lazybot	⇒ -1
22:46	akhudek	hm, can you no longer add new lein tasks directly to project.clj with lein2?
22:47	brehaut	http://clojure.org/libs
22:47	brehaut	right there 'Hyphens in the lib name are replaced by underscores in the path'
22:47	brehaut	(inc docs)
22:47	lazybot	⇒ 0
22:47	brehaut	(dec not-reading-the-docs)
22:47	lazybot	⇒ -1
22:47	AustinYun	i didn't say it's not because i'm an idiot
22:47	casion	leiningen explains it in its docs as well
22:48	casion	that's where I made the connection originally
22:48	brehaut	clojure.orgs docs get a bit of grumping from the community, but if you dont read them, you are seriously disadvantaged
22:50	xeqi	akhudek: https://groups.google.com/forum/?fromgroups=#!topic/leiningen/jQle_S1wo7Y
22:51	akhudek	thanks xeqi !
23:40	rbarraud	Yo... What was suggested Linux irc client for use over ssh + screen again? OT apologies...
23:40	AustinYun	is there a way to require a single function out of a namespace with :require?
23:41	AustinYun	rbarraud: i'm using weechat atm
23:41	metellus	rbarraud: irssi or weechat
23:41	rbarraud	Thanks aus
23:41	rbarraud	A irssi was the one I was half remembering ... Thanks
23:42	jkkramer	AustinYun: (ns example.core (:require foo.bar :refer [baz])) makes baz available within example.core
23:42	AustinYun	from a user's perspective weechat is basically irssi with a more xchat looking default UI (it's got the bar separating nicks and what is said for example)
23:43	AustinYun	i've heard architecturally weechat is more modern but it's not as if i've looked at the source for either of them
23:43	AustinYun	jkkramer: thanks
23:44	rbarraud	Hmmm.... Target host is too old or something... Neither avai
23:44	rbarraud	An
23:44	nsxt	irssi + nicklist will get you nicks if you need them
23:44	rbarraud	Available *
23:44	rbarraud	Any other possibly more archaic suggestions?
23:45	AustinYun	hm... bitchx?
23:45	AustinYun	or ircii
23:47	AustinYun	i take it you're ssh-ing into a remote system somewhere and are relying on it's package manager or something?
23:52	AustinYun	ok so everything's working now, lol, thanks brehaut
23:53	Sgeo	:( at http://talkingtomachines.org/chapter/1/6 calling fn a function