#clojure – 2013-08-10

2013-08-10

02:22	clj_newb_2345	is there a "docker rm ALL" command ?
02:22	clj_newb_2345	wrong chan
02:37	sinistersnare	hello, how can i write the following java code in clojure (using java interop) 'dropSound = Gdx.audio.newSound(Gdx.files.internal("drop.wav"));'
02:37	sinistersnare	ive imported 'Gdx'
02:38	sinistersnare	would it be something like (.audio.newSound Gdx (.files.internal Gdx "drop.wav"))
02:48	Raynes	sinistersnare: (.newSound Gdx/audio (.internal Gdx/files "drop.wav")) ; I think.
02:48	sinistersnare	oh that makes much more sound
02:48	sinistersnare	sense*
02:48	sinistersnare	thinking about sound too mucuh...
07:20	xy1	how do I setup my projects or dev machine to accept a self signed certificate in leiningen? I found the :certificates option for defproject. but were to put the certificate such that the project.clj works on all dev machines?
07:24	pepijndevos	xy1; resources folder?
07:25	xy1	pepijndevos: but I have multiple projects using that repository? so adding the certificate to all seems a lot of effort.
07:26	xy1	pepijndevos: otherwise I only have option via environment variables or fixed folder right?
07:26	pepijndevos	I guess
07:27	xy1	humm I could add the ":certificates" option to the ~/.lein/profiles.clj right? then the certificate could be in the same folder
07:30	xy1	seems to work :D
08:46	geoffeg	Is there a way to get clojure.xml to use the document's schema to properly apply types? I'm trying to convert from XML to JSON (with some processing the middle) and every field from the xml ends up as a string even though many fields are integers.
08:57	llasram	geoffeg: Any notion of things in XML which aren't string document content is something layered on top of XML, none of which clojure.xml is aware of
08:59	geoffeg	alright, thanks
10:01	bkirai	Hello, I'm learning Clojure and I have a question about the basics. How can I make the function to return the "rows" variable: http://pastie.org/private/z56c4d0sonvzik25hqmmww
11:04	squidz	does anybody know how evaluate a emacs buffer to a specific nrepl session? It seems to always try to evaluate in the last created nrepl
11:50	lgs32a	when i invoke r/fold with a monoid and a foldable sequence (r/map, r/filter), will the computation run in parallel or do i have to add a combining-fn
11:53	lgs32a	ah i just saw in the source code that the monoid will be used as combine-f
11:55	IamDrowsy	exactly. and if it will run in parallel depends on your initial sequence
12:33	nkozo	I have a web page guarded by ring.middleware.stacktrace/wrap-stacktrace, when I raise an exception created with ex-info, the backtrace is shown on the page, but if the exception comes from a failed assert, then anything is shown, only 500 Server Error is returned. Somebody knows hy?
12:40	nkozo	ok, now I'm really surprised: (instance? Exception (AssertionError. )) => false
12:40	dotemacs	hello, downloaded & installed the latest lein script at ~/bin/lein. Made it executable, when I run 'lein version' I get: https://gist.github.com/6201024 But when I do export HTTP_CLIENT='/usr/bin/curl -f -L -o' and run 'lein version' it obviously works. Shell bash, version 3.2.48, OS X 10.7.5
12:40	dotemacs	Did I miss a step which states that I need to declare the HTTP_CLIENT or ...
12:40	dotemacs	?
12:42	dotemacs	sorry, wanted to ask this in leiningen channel
12:42	triyo	I've got a leiningen based project I haven't touched in a while and I now have a latest version of lein installed. When I run the uberjar command, I now get a NoClassDefFoundError: my_pkg_module/main. Is it not compiling my .clj files that are in the default source path under ./src?
12:45	triyo	I checked by running `jar -tvf ./my-prj-standalone.jar \| grep my_pcg_module` and found nothing related.
12:46	triyo	However, if I run `lein run` all starts well.
12:47	lgs32a	when using leiningen, can I partly omit source files?
12:47	lgs32a	because :omit-source omits all
12:49	triyo	lgs32a: seems to be just a boolean flag and I don't see that any pattern can be specified to include or exclude certain source files
12:51	lgs32a	yeah i know
12:52	lgs32a	can you recommend a starting point to hack that in leiningen myself?
12:54	triyo	Yes, I have one way you could.
12:54	triyo	uberjar-exclusions [#"(?i)^META-INF/[^/]*\.SF$"]
12:54	triyo	So something like …. uberjar-exclusions [#"(?i)^my_java_src/[^/]*\.java$"]
12:54	triyo	something like that.
12:55	triyo	That'd work
12:56	triyo	lgs32a: ^^^
12:56	triyo	And BTW, that approach is not really a hack unless there is an easier way.
13:06	lgs32a	triyo: ty
13:07	triyo	pleasure
13:11	pandeiro	i'm occasionally getting 'Wrong type argument: stringp, nil' message when trying to eval code with org-babel:clojure or start an nrepl session in Emacs. The nREPL session ends up starting anyway but I would like to identify what might be causing this. Anyone know where I can look? The Messages buffer shows it happening like so: 'list-files: Wrong type argument: stringp, nil'
13:51	nifff	is (rest vector1) as fast as (rest list1) ?
13:52	nifff	change in the front for vectors are slow?
14:08	jtoy_	anyone know what im ding wrong with this hiccup? https://www.refheap.com/17484 im trying to generate html but it generates clojure code
14:12	jtoy_	normally i use for, but i join here so im not sure how to do this
14:18	aaelony	joty_: did you wrap your code in (html … ) ?
14:18	TimMc	$mail nifff Calling rest on a vector doesn't produce a new vector, it gives you a seq over the vector.
14:18	lazybot	Message saved.
14:18	aaelony	Jtoy_: did you wrap your code in (html … )
14:19	aaelony	jtoy_: see above...
14:19	aaelony	https://github.com/weavejester/hiccup
14:23	timvisher	so how does one go about programatically initiating a call to a static method?
14:24	timvisher	i've got a bunch of static field symbols that I'd like to see the value of, but i can't seem to programatically generate a call to it
14:47	TimMc	$mail timvisher You can use Java's reflection API (see Class) to get ahold of static method handles, which can be invoked.
14:47	lazybot	Message saved.
15:16	wolfes	Is it possible to get an aleph server (run with lein) to restart itself automatically after code modification, like the way "lein ring server" works to restart ring servers? Project in question: https://github.com/wolfes/nspire
15:41	coventry	Anyone here gone through the pedestal tutorial? I'm having trouble getting the backend to work at the end of part one. I should do (use 'dev) and (start) in repls started in the tutorial-client and tutorial-service subdirectories, right? https://github.com/pedestal/app-tutorial/issues/35
15:46	kmicu	I. No problems spotted.
15:47	kmicu	Always remember to 'lein clean/rm -rf out'
15:55	bbloom	odd thought: i've used sorted-set and sorted-map quite a bit, but i don't think i've ever once explicitly sorted a collection in clojure
16:01	coventry	kmicu: Yeah, this is from a fresh check out of v2.0.14, so there was no tutorial-client/out to begin with. Is it correct to initialize each repl with (use 'dev) and (start)?
16:25	shiranaihito	does anyone else find it annoying that an empty sequence is "truthy"?
16:25	shiranaihito	in python they're not, right? i find that much more natural
16:27	kmicu	shiranaihito: No.
16:27	schmir	shiranaihito: it's not python...I've been a victim of that behaviour once..I hope I've learned it now
16:27	shiranaihito	schmir: what do you mean?
16:27	shiranaihito	("victim")
16:28	schmir	my program had a bug because of that
16:28	shiranaihito	umm..
16:29	schmir	the only thing I miss from python is py.test.
16:29	shiranaihito	how was it "because of that"? i mean, it's certainly possible to write bug-free code that relies on empty seqs being false
16:30	gfredericks	shiranaihito: the seq function is often used to transform emptiness to falsiness
16:30	gfredericks	for all collections not just seqs
16:30	shiranaihito	gfredericks: yes, i just found out about that idiom.. i just can't see why it _should_ be necessary
16:31	bts-	shiranaihito: to me it seems that any collection of values should be truthy, regardless of how many values there are in the collection
16:31	schmir	because I assumed some expression would evaluate to false but it didn't
16:31	shiranaihito	compare something like "if values: dostuff()" with "if len(values) > 0: dostuff()"
16:31	gfredericks	shiranaihito: it's a design decision. Doing it the other way would annoy other people who don't like having to enumerate a long list of falsy things
16:32	shiranaihito	schmir: well, doesn't that just mean you weren't aware of the behaviour, ie. not consciously benefiting from it?
16:32	gfredericks	e.g. "Everything is truthy except for false and nil and the empty list and the empty vector and the empty set and the empty map but not empty java collections or arrays but also zero and undefined and NaN
16:32	gfredericks	"
16:32	schmir	shiranaihito: it just means I been doing python for too long
16:32	shiranaihito	gfredericks: "Doing it the other way would annoy other people who don't like having to enumerate a long list of falsy things" <-- enumerating a list of falsy things? what exactly are you describing?
16:33	shiranaihito	(or, referring to)
16:33	shiranaihito	schmir: i'm not sure that's actually the case :p
16:33	cespare	shiranaihito: ruby, like clojure, has very simple truthiness rules (nil and false => false), and [] is true in that language.
16:33	cespare	shiranaihito: (as opposed to python, wehre you have you to memorize a bunch of rules)
16:33	schmir	shiranaihito: if you expect things to be like in python, you should probably use python not some other language
16:34	shiranaihito	cespare: well, once you're aware of "the rules" that "any empty data structure is considered 'false'", you can then get by with a lot less typing, not having to check for emptiness at every turn.. that's kind of the point here
16:34	cespare	any empty data structure
16:34	gfredericks	"Then why don't you just use X" seems to be a conversation stopper in "why isn't Clojure like X?" conversations :/
16:34	cespare	oh my, that sounds completely full of edge cases
16:35	shiranaihito	cespare: it's simple.. empty list = false, empty map = false, empty set = false, etc
16:35	gfredericks	shiranaihito: what about empty java collections?
16:35	cespare	it's not even obvious what the semantics of 'if []' should be... what are you even testing?
16:35	cespare	it's not natural to me.
16:35	shiranaihito	gfredericks: sure, why shouldn't an empty _java_-collection be false if other collections are?
16:36	shiranaihito	(other empty ones, that is)
16:36	gfredericks	shiranaihito: so how do we decide what things count as collections then? is the empty string falsy?
16:36	gfredericks	what about (keyword "")?
16:36	shiranaihito	gfredericks: of course it is.. strings are sequences of characters in python
16:36	gfredericks	should we remember to tell newbs about that one too?
16:36	shiranaihito	gfredericks: and they can be manipulated like seqs
16:37	shiranaihito	is (keyword "") an empty collection?
16:37	gfredericks	shiranaihito: the boundary between things that count and things that don't is not clear, and you have to account for any possible type I might create
16:37	shiranaihito	if not, is there anything to tell Newbie?
16:38	coventry	shiranai: You end up needing to let each type decide what its truth/false conditions are, as in __nonzero__, and it quickly gets confusing when you're trying to write type-agnostic functions.
16:38	bbloom	i'm not even sure nil should be falsy....
16:38	gfredericks	what about instances of (deftype Gary [] clojure.lang.Counted (count [_] 0))?
16:39	shiranaihito	coventry: sure, if you want to test a custom object's truthiness like that, then you need to implement "nonzero".. but is that a problem? you'll know you're dealing with your own type anyway
16:39	gfredericks	this also allows objects that can change their truthiness
16:39	shiranaihito	gfredericks: i don't know what that does (new to clojure), but i doubt that's an empty collection either
16:39	gfredericks	shiranaihito: it doesn't look like one but (count (new Gary)) returns 0
16:40	shiranaihito	gfredericks: what's your point?
16:40	bts-	shiranaihito: it's the declaration of a new type that participates in the "Counted" protocol
16:40	bbloom	shiranaihito: since you're new to clojure, maybe you should try it for a bit and see if you change your mind or have formed a more informed opinion?
16:41	shiranaihito	bbloom: i just wanted to ask for opinions now.. i can't see a problem with that
16:41	shiranaihito	so far, i just can't see the benefit
16:41	gfredericks	shiranaihito: that the current behavior is super simple and not too annoying in practice, while your proposal has a _lot_ of gray area
16:41	bbloom	the issue is that it's a very subtle design decision, of which clojure is full of many
16:41	shiranaihito	but i can see how this design decision causes me more typing compared to python
16:41	coventry	In pedestal, is there a way to pull out the messages which are creating the development view (like in the recording feature of the data UI?)
16:41	bbloom	it's meaningless to discuss this particular issue without discussing the larger philosophy of the language
16:42	bbloom	and that discussion will be useless unless you have an intuitive feel of the choices clojure makes in the various design spaces
16:42	shiranaihito	gfredericks: i don't see the gray area, as long as everything works consistently, like in python (afaicr)
16:42	bbloom	shiranaihito: the counted 0 thing is already a gray area, he pointed one out
16:42	bbloom	and java collections
16:42	shiranaihito	bbloom: that seems overly complicated/vague
16:43	coventry	shiranai: things don't work consistently in python, that's the point of gfredericks example. The python cognate would be an __nonzero__ method which just returns false.
16:43	gfredericks	shiranaihito: exactly -- but you'd have to make a decision about that
16:43	bbloom	shiranaihito: precisely. that's why you need more exposure to the language before you can understand the motivation for such decisions
16:43	kmicu	shiranaihito: do not compare clj to python, pls
16:43	shiranaihito	bbloom: well, if his examples were not examples of empty collections/data-structures, then i can't see their relevance to empty collections evaluating to false
16:43	coventry	Well, actually, a __len__ method which always returns 0.
16:43	bbloom	what is a collection anyway?
16:43	bbloom	what makes something a collection?
16:43	hyPiRion	Are we talking about falsey values?
16:43	gfredericks	hyPiRion: yeah
16:43	shiranaihito	hyPiRion: yes
16:43	hyPiRion	Oh
16:43	coventry	(Not that I'm down on python, it is my bread and butter.)
16:43	bbloom	lol
16:43	bts-	haha
16:44	shiranaihito	coventry: as mentioned, you may have to implement nonzero for your own types, but the standard ones do work consistently, if i recall correctly.. if that's the case, then i can't see a problem
16:44	shiranaihito	consistency is key
16:44	bbloom	shiranaihito: nevermind the fact that this would slow down EVERY BRANCH OPERATION
16:45	bbloom	plus you can trivially create an ify macro that calls a non-zero protocol method, if you really wanted this
16:45	shiranaihito	bbloom: um.. i guess? sometimes syntactic elegance requires a tradeoff in performance
16:45	coventry	pedestal need a dedicated IRC channel. :-)
16:45	bbloom	shiranaihito: and clojure made some trade offs for elegenace vs perfrmance. you proposal lies on the other side of the line drawn in the sand
16:46	shiranaihito	bbloom: hm.. well, i would be interested in circumventing this problem, once i know enough to do it
16:46	shiranaihito	bbloom: yes, it is, in fact, clear to me that this is the way clojure works :p
16:46	bbloom	in the unlikely event that you still think this is a "problem" after learning clojure, you'll find it quite easy to "circumvent"
16:46	shiranaihito	cool :p
16:46	shiranaihito	but yeah, at least for now, i can't imagine why i wouldn't prefer the python way
16:47	shiranaihito	and this is the _only_ problem i've seen with clojure so far
16:47	gfredericks	I doubt anybody likes everything about clojure
16:47	bbloom	because explicit is better than implicit
16:47	bbloom	and in the face of ambiguity, resist the urge to guess
16:47	bbloom	~zen ?
16:47	clojurebot	excusez-moi
16:47	coventry	bwahaha
16:47	shiranaihito	bbloom: that sounds like the python zen thingy :P
16:47	bbloom	shiranaihito: yes. yes it is.
16:48	bbloom	and i think clojure is far more zen than python ;-)
16:48	bbloom	give it time!
16:48	gfredericks	the cool thing about clojure is that, despite being complicated and messy and often not exactly what I would have done, its value for writing practical software consistently seems to be an order of magnitude higher than any other language
16:48	shiranaihito	gfredericks: huh? :p what's not to like? (besides this, that is :p)
16:48	coventry	The debugging facilities leave a lot to be desired.
16:49	gfredericks	okay everybody name your favorite problem with clojure
16:49	shiranaihito	:P
16:49	kmicu	trolls
16:49	bbloom	the primitives aren't namespaced! grrr
16:49	shiranaihito	well this should be interesting :P
16:49	technomancy	startup tiiiiiiime
16:49	shiranaihito	mmm
16:49	coventry	drip
16:49	bbloom	says the guy who writes the only tool i ever "startup" :-)
16:50	shiranaihito	technomancy: you may have a point there :)
16:50	hyPiRion	The solution is right here: (defn falsey [] (proxy [Object] [] (equals [_] true))) -> (if (= (falsey) false) "wohoo")
16:50	technomancy	bbloom: the only person daft enough to write a CLI tool in clojure you mean?
16:50	kmicu	http://www.infoq.com/presentations/What-Sucks-about-Clojure-and-Why-You-ll-Love-It-Anyway
16:50	hyPiRion	you just have to do (= object false) every time!
16:50	bbloom	hyPiRion: ##(doc false?) noob
16:50	lazybot	⇒ "([x]); Returns true if x is the value false, false otherwise."
16:50	bbloom	:-)
16:51	bbloom	technomancy: yeah something like that
16:51	hyPiRion	bbloom: but that doesn't work with my trick
16:51	hyPiRion	also (= false (falsey)) doesn't work either
16:51	hyPiRion	apart from that the solution is perfect.
16:52	shiranaihito	technomancy: why is it daft to write one? .. i figure you're being at least half-sarcastic, but .. ? :)
16:52	gfredericks	bbloom: when you say "primitives aren't namespaced" you mean the special forms?
16:52	bbloom	gfredericks: yeah
16:52	cespare	shiranaihito: a cli tool is obnoxious when it takes multiple seconds to start
16:52	gfredericks	yeah I thought of that recently too
16:52	shiranaihito	kmicu: i'll check that out :P
16:52	shiranaihito	cespare: ah right.. good point :)
16:52	kmicu	shiranaihito: you should
16:53	gfredericks	I think my least favorite things are the idioms with (seq x) and (some #{x} coll)
16:53	technomancy	shiranaihito: because the startup time is so awful, plus you can't realistically launch any JVM program without a shell shim anyway
16:53	bbloom	gfredericks: try (defn if [test then else] :blah) then (if 1 2 3)
16:53	gfredericks	bbloom: yeah I'm familiar with how the special forms work
16:54	shiranaihito	gfredericks: is (seq x) meant for what i'm talking about here? checking for an empty collection?
16:54	llasram	The JRuby people go so far as to have a C shim which links to libjvm
16:54	technomancy	inb4 contains?
16:54	bbloom	gfredericks: it sucks much if you're tinkering with a little interpreter
16:54	gfredericks	shiranaihito: yeah it's recommended for checking for non-emptiness
16:54	shiranaihito	gfredericks: and you find it a problem? .. so basically you're saying you agree with me? :P
16:54	shiranaihito	ie. needless typing, etc?
16:54	gfredericks	shiranaihito: no, my complaint is not yours
16:54	shiranaihito	but?
16:55	gfredericks	shiranaihito: my complaint is I wish there was a separate function called not-empty?
16:55	gfredericks	rather than seq recommended for that
16:55	shiranaihito	hmm
16:55	gfredericks	I have no complaint about the truthiness rules
16:55	hyPiRion	gfredericks: (if-not (empty? x)
16:55	gfredericks	hyPiRion: yes but that is derided as unidiomatic
16:55	hyPiRion	I'm a rebel and do that sometimes.
16:55	kmicu	shiranaihito: about rationale behind empty coll-s, Rich talked about this in a presentation about Reducers (combine part). I do not remember which one ;)
16:55	hyPiRion	I know.
16:55	gfredericks	hyPiRion: so maybe it's mostly a complaint with the recommendation and not the language itself
16:55	technomancy	lol... falsy empty collections are so weird.
16:55	shiranaihito	kmicu: hmm.. that would be interesting to see :p
16:57	hyPiRion	gfredericks: It's the idiomatic thing to do in Swearjure, if you're able to represent it in Swearjure that is.
16:57	gfredericks	hyPiRion: phew; time to start porting
16:59	hyPiRion	Perhaps I really should consider writing that SwearjureScript compiler, which compiles down to JS without alphanumerics. At least debugging would be just as easy in the compiled code and in the original one.
17:27	coventry	What's the difference and potential advantage of (def f #'ns/g) vs (def f ns/g) when doing interactive development?
17:37	llasram	coventry: When you use an identifier which resolves to a var, the generated code will implicitly dereference the var when run. In the case of definitions like your example, "when run" means "when defining the value of `f`"
17:38	llasram	So `f` will point to whatever value `ns/g` held at the time the `(def f ...)` form is evaluated
17:39	llasram	When you use the `#'` reader macro (or the `(var ...)` it expands to), you reference the Var itself, which is a Clojure reference type
17:39	hyPiRion	coventry: if you redefine ns/g later on, f will point to the newly defined ns/g if you store it as #'ns/g.
17:39	hyPiRion	if you store f as ns/g, then you'd have to redefine f as well if you've redefined ns/g.
17:39	llasram	hyPiRion: I was getting there :-p
17:40	hyPiRion	ops, sorry :( I noticed you gave a more detailed response
17:41	llasram	Probably too detailed though, so all good
17:45	coventry	Thanks, guys. That sounds useful.
18:03	Kidee	hello, i'm long time scheme user, what analogue of synamic-wind i can find in clojure?
18:04	bbloom	Kidee: try/finally
18:04	bbloom	finally blocks are dramatically simpler in the absence of continuations
18:05	Kidee	bbloom: thanks
18:05	bbloom	see also with-open and friends
18:05	Kidee	okay, thanks again. :)
18:07	chord	do you guys think that clojure will beat scala
18:07	Raynes	Nobody wants it to beat Scala.
18:07	Raynes	They're not mutually exclusive.
18:08	Raynes	I sure hope round doorknobs beat handles!
18:08	Raynes	:p
18:08	bbloom	HANDLES4LIFE
18:08	chord	Raynes: clojure will beat scala
18:09	Raynes	Okay.
18:09	Raynes	I appreciate the insight.
18:10	chord	Raynes why do you think otherwise
18:10	Raynes	Because they're not really competing.
18:10	chord	so you don't know
18:13	seangrove	Thought bbloom was talking about an irc philosophy of permanent nicknames
18:14	bbloom	seangrove: just wanted to fan the flame war. personally, i'm more of a fast sliding automatic doors guy. let's hurry up with that whole future thing
19:01	coventry	kmicu: Thanks a lot for responding to my github pedestal issue.
19:17	clj_newb_2345	what is the correct way to ensure that a docker container gets a particular ip address?
19:17	clj_newb_2345	so I have setup a docker image that contains ssh + firefox
19:17	clj_newb_2345	now, I want to ensure that when I run this container, it get s particular ip address
19:17	clj_newb_2345	how do I ensure this?
19:18	clj_newb_2345	damn it
19:18	clj_newb_2345	wrong chaannel again
19:18	clj_newb_2345	sorry everyone
19:19	Foxboron	clj_newb_2345: i was about to ask :)
19:22	futile	Are there any tools that tell me what vars exist in a given lein project and what file/line they're on?
19:33	callen	futile: I'm told text editors do this well.
19:33	futile	I mean Clojure library.
19:33	callen	futile: one could also use cat, grep, sed, and awk.
19:33	callen	grep -R "def" .
19:34	futile	Oh my.
19:34	callen	you don't need a clojure library, just knowledge of the shell.
19:34	futile	"(definitely a bug)"
19:34	futile	Oh look, a wrong match.
19:34	coventry	futile: nrepl can do this. "lein pom && mvn dependency:sources;" in your project directory, then in emacs, M-. on the symbol in question.
19:34	callen	coventry: that's pretty nifty, thanks.
19:35	futile	coventry: thanks, although the idea is to embed this in another text editor so I don't know if nrepl will do the trick.
19:35	callen	lol.
19:36	coventry	futile: Look at the code for source and source-fn, they must be doing something close to what you want: http://clojure.github.io/clojure/clojure.repl-api.html
19:36	futile	thanks coventry
20:13	cespare	trying to make a lein hello world. lein run -m hello.core works fun, but after I 'lein uberjar' and try to run 'java -cp target/hello-0.1.0-SNAPSHOT-standalone.jar hello.core' I get Error: Could not find or load main class hello.core
20:13	cespare	ideas?
20:17	hyPiRion	cespare: should be sufficient to just to "java -jar target/hello-0.1.0-SNAPSHOT-standalone.jar" Does that work?
20:17	whilo	i am playing with pedestal. i have now done (app/build example-app) and (app/begin example-app) on a clojure repl, with a modified tutorial-client app to play around in a mini repl. i can send messages and they are reflected in the data, but jvisualvm shows io.pedestal.app.util.scheduler to basically run at 100%
20:18	whilo	what am i doing wrong?
20:18	cespare	hyPiRion: same thing
20:18	cespare	hyPiRion: (I also put :main hello.core in my project.clj)
20:19	hyPiRion	cespare: do `lein upgrade 2.2.0`, `lein uberjar` and you should be set. And then wait for 2.3.1 to come out
20:21	hyPiRion	cespare: it's technomancy/leiningen#1283 if you're interested. It's already solved, Phil is just waiting to ensure not more bugs are out there.
20:21	lazybot	Bug in provider profile in 2.3.0 -- https://github.com/technomancy/leiningen/issues/1283 is closed
20:22	cespare	hyPiRion: same thing
20:26	cespare	hyPiRion: the relevant classfile seems to be in the jar.
20:26	cespare	it's pretty strange
20:26	cespare	man, I have such a terrible experience every time I use anything on the jvm
20:26	cespare	always leaves a nasty taste in my mouth.
20:39	glosoli	hey do I understands correctly that in Clojure, when you are making data structures out of existing one i.e. using conj , references are retained to the old one instead of creating all the elements from scratch ?
20:43	Foxboron	glosoli: there is a talk rich gave one touching on the theme
20:44	Foxboron	glosoli: http://www.youtube.com/watch?v=wASCH_gPnDw
20:44	Foxboron	a tad out in the movie
20:44	Foxboron	or talk*
20:45	kurisumasu	glosoli, it uses structural sharing, so updates are really cheap. But you can reason about them being completely different values, leaving the "how they're actually built" as an implementation detail.
20:46	glosoli	Foxboron, kurisumasu thanks
20:47	kurisumasu	glosoli, you do take some performance hit compared with some ephemeral data structures in some cases, but for most stuff the performance is on-par (and for some cases you get better performance, and with less trouble/headaches).
20:48	glosoli	I am too new for that, I am still reading a book on Clojure, and just wanted to make sure if I understood the statement of Clojure not doing deep copies correctly
20:52	kurisumasu	glosoli, ah, okay :)
21:07	qed	If I have a string that is a method, how do I call it from clojure? like (.toString [1,2,3]), what would I do if I wanted to call "toString"
21:15	bbloom	qed: using standard java reflection primitives via interop
21:16	bbloom	qed: unless you only have a small set of known things you want to call, then you're better off just making a fixed map of those
21:24	qed	bbloom: could you give me an example?
21:24	qed	bbloom: this is being done in the context of a macro FWIW
21:25	bbloom	{:to-string (fn [x] (.toString x)) .....}
21:25	bbloom	oh, if it's in a macro, then you can probably ~(symbol ".toString")
21:29	qed	bbloom: oh, duh
21:29	qed	bbloom: thanks
22:01	devn	https://gist.github.com/devn/26de53b4f47ad7ab3920 bbloom -- if you're around could you give that gist a look? I'm screwing something up. A user is going to pass in a client to the fn being created
22:02	bbloom	devn: is there a particularly reason you're asking me, rather than more generally?
22:03	devn	no, i just knew you were around and know that you're a really smart dude
22:03	devn	bbloom: i updated that gist btw, i had something obvious messed up
22:03	devn	here's the issue:
22:03	devn	(meth->pred "isJavaScriptEnabled") returns foo.bar/is-java-script-enabled? as expected
22:04	devn	when I call it though: IllegalArgumentException No matching field found: isJavaScriptEnabled for class clojure.lang.LazySeq clojure.lang.Reflector.getInstanceField (Reflector.java:271)
22:04	devn	why does it think it's a lazyseq?
22:04	bbloom	have you tried macro expand?
22:04	devn	yeah
22:04	devn	(clojure.core/defn is-java-script-enabled? [c__2583__auto__] (clojure.core/let [client-opts__2584__auto__ (yokogiri.core/get-client-options c__2583__auto__)] (.isJavaScriptEnabled client-opts__2584__auto__)))
22:05	Raynes	devn: The problem is that your predicates should never do meth.
22:05	devn	haha, why did i know someone was going to bring up meth
22:05	bts-	not even once
22:05	Raynes	You should have known who as well.
22:05	devn	Raynes: to be totally honest with you, i think in the back of my mind i knew it would be you or callen
22:06	Raynes	Dear God, callen, we're getting lumped together in things now.
22:06	Raynes	I think we need to take some time off.
22:06	devn	Raynes: any idea on what's up with my macro?
22:06	Raynes	Oh, you wanted me to be helpful. Sorry. One moment.
22:06	devn	haha
22:07	devn	i think it's the let
22:08	devn	but im not sure how to fix it. I need to unquote the result of get-client-options, but that blows up because it doesn't know what c# is yet
22:10	Raynes	devn: What is get-client-options?
22:10	bts-	do you mean to be calling isJavaScriptEnabled on the client options instead of the client?
22:10	devn	Raynes: (.getOptions client)
22:10	devn	bts-: yes
22:11	Raynes	Well.
22:11	Raynes	That's what you're telling it to do.
22:11	devn	heh, well, i found a solution
22:11	devn	everyone stop what you're doing
22:12	devn	err, if you're looking at why this wasn't working
22:12	devn	it's 100% my fault
22:12	devn	get-client-options changed and needed to be re-evaled
22:12	Raynes	I was about to say, this macro does exactly what you've told it to do. :P
22:13	xeqi	true of programs in general
22:13	devn	Raynes: i had changed get-client-options to a thingy which would return a map of all the current options
22:13	Raynes	xeqi: Especially Chef.
22:13	devn	which is why im writing this macro
22:13	devn	anyway, gotta run, thanks guys
22:14	Raynes	You're welcome.
22:14	Raynes	I'll happily tell you that your macro works any day!
22:17	ambrosebs	are there snapshot releases of clojurescript on maven?
22:17	ambrosebs	or more likely sonatype
22:20	Bronsa	cool. emacs just crashed while opening Compiler.java
22:40	axle_512	Does anyone know if core.cache has support for "weight". (Guava caches have this feature)
22:41	axle_512	Guava says: if your cache values have radically different memory footprints -- you may specify a weight function with http://docs.guava-libraries.googlecode.com/git-history/release/javadoc/com/google/common/cache/CacheBuilder.html#weigher(com.google.common.cache.Weigher) and a maximum cache weight
22:41	axle_512	Is there something similar in clojure.cache?
23:31	ystael	Anybody know how to make clojail.core/thunk-timeout pass out along to the thread it spawns?
23:32	ystael	actually, don't answer that
23:32	ystael	sorry