#clojure – 2010-03-21

2010-03-21

00:19	DTrejo	does anyone use a combination of leiningen and counterclockwise?
00:19	DTrejo	I suppose it's not much of a combination since it's not really one or the other.. nvm
02:20	JonSmith	if anyone is awake, what do people use for video games in clojure (i'm not looking to make video games per-say, merely applications more interactive than swing or awt can do...)
02:23	rfg	JonSmith: I am using LWJGL for one project (a game) and JOGL for some scientific rendering in another project.
02:24	rfg	If you want to use LWJGL, you should probably check out penumbra.
02:25	JonSmith	yeah i've played with penumbra it is pretty neat
02:25	JonSmith	i downloaded clj-processing and thatis cool too
02:25	JonSmith	kind of doing a survey to figure out what i want i guess
02:26	JonSmith	i want to do a GUI client type thing, but I want it to be more than just a plain old buttons and drop-downs GUI
02:27	JonSmith	i should take a second look at penumbra though as it has been a while since i used it
03:46	psykotic	currently there doesn't seem to be a way to merge futures
03:48	psykotic	for example, if you have a list of futures and want to process them in 'finishing order'.
03:48	hiredman	you need a futureM
03:48	psykotic	hm?
03:49	psykotic	i noticed that you could use promises, since they allow you to check whether they have been delivered yet or not. but even then, i don't see how to write an _efficient_ merge.
03:49	psykotic	i don't want to have a thread that spins until one of the promises is delivered.
03:50	hiredman	you can build a blockingqueue on promises, or just use from j.u.concurrent
03:50	psykotic	right, i've done this kind of thing with normal parallel primitives before. i was just checking whether this (bog standard) problem had a solution in core i overlooked.
03:51	hiredman	I tend to use lbq a lot
03:52	psykotic	with that, you can easily build a loop that processes the futures in completion order.
03:52	psykotic	wait for the next future to finish; remove it from the outstanding list, deref it, rinse and repeat, until no futures left.
03:53	hiredman	no, best would be writing your own future macro that would stick the result into a queue when it's done
03:54	psykotic	blockingqueue looks nice
03:54	LauJensen	Morning crew
03:54	hiredman	hello
03:57	rfg	Hello
04:01	LauJensen	I'm suffering from these completely silent failures in futures, is there any way to fix that except running the code in the main thread?
04:03	hiredman	(future (try … (catch Exception e (-> e .getMessage println))))
04:04	LauJensen	lemme try
04:05	hiredman	you can also create a logging function or macro or use the logging stuff from contrib
04:06	LauJensen	Yea, that would be last resort, but your example above works perfectly, thanks
04:06	hiredman	:(
04:06	hiredman	people are watching lein-gae, I should delete it
04:07	LauJensen	I made an empty repo called Clabango - Had quite a few watchers as well :)
04:26	LauJensen	I know I'm stretching my luck here, but is there a javalib for capturing a graphics object and storing it as a frame in an animated gif ?
04:27	LauJensen	(if so, please send it to me with a lein-string attached)
04:36	vy	LauJensen: You'd have more luck in ##java
04:42	LauJensen	Or perhaps ##google
04:42	LauJensen	Anyway, doesnt hurt to ask
04:50	LauJensen	Recently I've been seeing this a lot when doing slime-load-file
04:50	LauJensen	swank.util.io.proxy$java.io.StringWriter$0 cannot be cast to java.io.PrintWriter
04:50	LauJensen	Anybody know what thats about?
04:58	hiredman	some library somewhere expects err to be a PrintWriter
04:58	hiredman	I forget the details
05:01	LauJensen	So its a matter of waiting for an update for swank-clojure ?
05:02	hiredman	http://groups.google.com/group/swank-clojure/browse_frm/thread/36cc0c9d325a9c76/e7602744e126102b?tvc=1#e7602744e126102b
05:03	hiredman	shrug
05:03	LauJensen	great, theres already a patch and its only a problem when tracking reflections
05:52	zab	Hi all. Just writing something that takes a Java InputStream and copies it to an OutputStream. Is this the idiomatic way of doing it in Clojure? http://paste.lisp.org/display/96708
05:53	zab	(I am unsure of using `def` to represent the Java object that will be returned.)
05:55	rfg	Why not: http://paste.lisp.org/display/96708#1
05:55	rfg	?
05:55	Chousuke	that doesn't work
05:55	rfg	Oh sorry
05:55	rfg	Wait
05:55	Chousuke	you need to use let
05:56	LauJensen	zab: As far as human possible, avoid modifying anything outside your functions body
05:56	LauJensen	+ly
05:57	Chousuke	so you should just do (let [os (ByteArrayOutputStream.)] (Streams/copy ...) os)
05:58	zab	The return value of Streams/copy is not what I want returned from the function. I want the 2nd argument returned. The new ByteArrayOutputStream will be populated with the input stream.
05:59	zab	So in Java, you would declare the OutputStream first, and then mutate it within the function call, and then return it. But in Clojure I do not know how to do the equivalent.
06:00	zab	LauJensen: Yeah I thought so. Hence my hesitation with the `def`. :( There has to be a better way?
06:00	Chousuke	use let within the function
06:00	Chousuke	ie. make the outputstream in the function and just return it
06:00	LauJensen	zab: What Chousuke said. If you define something within a function and mutate it there, its still considered a pure function in regards to the rest of your program
06:01	Chousuke	though that's not a pure function even if you did that
06:01	zab	Chousuke, LauJensen: Ahh okay. I was unsure if that would work because I know you cannot rebind using let. But that wouldn't be rebinding anyway.
06:01	Chousuke	because it presumably affects the inputstream
06:02	zab	Chousuke: Would there be any way to achieve a pure function with my problem? Or is this something that I have to live with seeing as I am playing in Java land?
06:02	Chousuke	I don't think so.
06:02	Chousuke	it's pretty difficult to clone an inputstream :/
06:03	Chousuke	I mean, you can do it, but it will still have side-effects
06:04	zab	Chousuke: Okay cool. I'll stick with this approach then. :)
06:04	zab	How about function naming conventions. Is this function named right? `new-output-stream`
06:05	Chousuke	but not all of your functions need to be pure. if most of them are, you're doing good.
06:05	rfg	"What's in a name?"
06:05	Chousuke	zab: what's the function for, exactly
06:06	zab	takes an InputStream and creates a new OutputStream object for it
06:07	Chousuke	so it's like a unix pipe? I'm not sure if I understand the semantics of the copy operation right :/
06:07	Chousuke	it's not just creating a new output stream, it's copying stuff
06:07	Chousuke	and I think that should be apparent in the name
06:08	zab	yeah it's copying the InputStream to the OutputStream and returning that.
06:08	zab	just a hoop I have to jump through to get it to play nice with app engine
06:09	Chousuke	maybe name the function according to what the outputstream represents instead
06:09	Chousuke	I think as it is, it may be a bit too generic.
06:10	zab	hmm okay. I see your point.
06:10	Chousuke	or you could name it make-output-from
06:10	Chousuke	which would read pretty nicely
06:11	zab	Nice. Sort of like how Objective-C methods are named, read like a sentence. make-output-from [input-stream]
06:12	zab	thanks for the help Chousuke, LauJensen, rfg :)
06:13	rfg	My help was substandard, but thank you :)
06:13	zab	rfg: heh you gave it a shot
06:44	patrkris	what is the nicest way of checking a series of let-bindings that are serially dependent, i.e in (let [a expr1, b expr1] ...) b is dependent on a not being nil? I want sort of the behavior of if-let, i.e. the body is not evaluated unless both a and b are non-nil/non-false. Hopefully it makes sense.
06:45	noidi	the maybe monad does exactly that
06:45	noidi	afaik
06:45	patrkris	noidi: cool, will check it out
06:45	patrkris	noidi: in contrib?
06:45	noidi	http://onclojure.com/2009/03/05/a-monad-tutorial-for-clojure-programmers-part-1/
06:46	patrkris	thanks
06:46	noidi	so you want b to be evaluated only if a is non-nil, and the body evaluated only if b is non-nil?
06:47	patrkris	noidi: exactly
06:47	noidi	"Anyway, the idea is that whenever a computational step yields nil, the final result of the computation is nil, and the remaining steps are never executed."
06:47	noidi	from the tutorial
06:47	noidi	so maybe monad should do the trick
06:49	patrkris	sounds like it!
06:49	patrkris	i would have thought that this is such a common scenario that it would be in core
07:43	ttmrichter	I saw an interesting question on StackOverflow that I'm curious about the answer to myself: http://stackoverflow.com/questions/2486752/in-clojure-how-to-define-a-variable-named-by-a-string
07:44	ttmrichter	Is there a way to assign values to symbols generated from strings?
07:51	psykotic	you can do it if the (parts of the) string are known at compile time
07:52	psykotic	and there is always eval when that isn't the case
07:52	psykotic	though that's good to avoid :)
07:52	Chousuke	this time, it's restartable.
07:54	Chousuke	(def cont (second (read-one (seq "\"foo")))) -> (second (cont (seq "bar\""))) -> "foobar"
08:00	Chousuke	I'll need to find some way of managing the "continuations" if I want to make this feasible :/ right now I have a vector parser and a string parser and they both have a cond checking whether they need to "save" their state or not.
08:08	ttmrichter	Whoever sepp2k is on StackOverflow, thanks for the succinct and helpful answer. I completely forgot about the ~ construct.
08:08	psykotic	can anyone recommend a good on the standard java API (io, net, collections, etc) that isn't just a reference but also a "best practices", tricks and pitfalls, etc, kind of thing?
08:08	psykotic	a good book even
09:46	ivan	is there any sane way to write clojure while using variable width fonts in (any) editor?
09:47	LauJensen	ivan: The font you use shouldn't affect your ability to write clojure-code :)
09:47	Fossi	why would one do that? :D
09:47	Fossi	well, it helps the indention if it's mono
09:47	ivan	well, variable width makes it impossible to align code in a dumb editor, yeah
09:48	ivan	and I think they're nearly all dumb
09:59	ivan	maybe elastic tabstops, heh
10:00	psykotic	ivan: i don't like proportional fonts, but as long as the "alignment" consists entirely of spaces, it works fine
10:00	psykotic	the problem is when you have a mix of spaces and non-spaces
10:00	Raynes	ivan: Emacs think's you're dumb. :\|
10:01	esj	Raynes: emacs keeps proving that I'm dumb ;)
10:01	ivan	psykotic: well, if I align things for my variable width font, it's be misaligned for most people
10:01	ivan	s/it's/it'll/
10:01	Raynes	clj-sandbox keeps proving that I'm dumb.
10:04	Raynes	Waiting for an email is the most agonizing thing in the world to do when have absolutely nothing to do but sit.
10:04	Raynes	I wish everybody I knew lived in the same timezone as me. It would make this stuff so much easier.
10:05	esj	but you live in your own timezone, waking up at 5pm :)
10:05	Raynes	esj: Yeah, and that's usually convenient because everybody else I know is waking up when everybody in my timezone is going to sleep. :\|
10:07	Raynes	I swear, this timeout stuff will be the death of me.
10:36	bobo_	could someone take a peek at http://github.com/bobo/Retwis-clj/blob/master/src/retwis/view/view.clj and give me some tips on what to learn/do to improve the quality of the code?
10:48	The-Kenny	bobo_: First of all: Never put the closing-parens in an empty line. That looks so awful
10:48	Raynes	That's a Cism that doesn't work out in Lisp.
10:54	Fossi	hmm. i try to compile a gen-class with lein, but it only says "All :namespaces already compiled"
11:01	Licenser_	greetings
11:04	Licenser_	,(loop [] (recur))
11:04	clojurebot	Execution Timed Out
11:05	Raynes	Licenser: Hai!
11:06	Raynes	Licenser: You should probably look at thunk-timeout in clojurebot's sandbox.
11:06	Raynes	I tried to fix it myself, but I faileded. :p
11:06	Licenser_	hrm hmr
11:06	Licenser_	ah you're the Raynes :) greetings
11:06	Raynes	Greetings, sir, and thank for you clj-sandbox. :>
11:06	Licenser_	yes I figured the problem, was trying out if clojure bot has the same problem, fortunately not
11:07	Licenser_	the s-seq function is the evil doer
11:07	Licenser_	and you're welcome :)
11:08	Raynes	Licenser: Once we get this fixed, I'll finish up what I'm doing and issue a pull request detailing what I've done. I think you'll like the modifications I've made. :>
11:09	Raynes	create-sandbox and create-sandbox-compiler were just screaming for optional keyword arguments.
11:09	Licenser_	Yes you are totally right
11:09	Licenser_	I git attacked by the evil 'own purpose blindness' :P
11:09	Raynes	I:p
11:09	Raynes	:p*
11:11	Raynes	Just got your email.
11:11	Licenser_	nods
11:12	Raynes	Licenser_: Alright. I'll be watching for the push. Once that's out, I should be able to toss a pull request your way sometime tomorrow.
11:12	Licenser_	:) great!
11:17	Raynes	Licenser_: I'll also point out that most of the problems with the doc-strings were merely typos and not actual the result of your English.
11:18	Raynes	And the other ones really just needed to be reworded a bit.
11:18	Licenser_	Raynes: ^^ Thanks
11:19	Licenser_	lets see if this fixes the issue
11:20	Raynes	I thought about going ahead and dropping the class-tester function in there and adding some java.lang classes to the whitelist, but we might have different definitions of what is 'secure', so I figured I'd let you handle that.
11:20	Licenser_	My definition of secure is mostly 'what comes to mind'
11:21	Raynes	Most of what I added to my own whitelist are just java.lang.String and other similar classes.
11:24	Fossi	lein is driving me nuts. should have a verbose option :(
11:33	Licenser_	Raynes: fixed :)
11:33	Raynes	Awesome!
11:33	Raynes	:D
11:34	Raynes	In that case, I might be finished enough to send you a pull request tonight even.
11:34	Licenser_	I'll add another comment and then push
11:35	Raynes	:D
11:39	Licenser_	Raynes: pushed
11:39	Licenser_	I love the partial commit thing from git
11:39	Licenser_	that is so great
11:39	Licenser_	I really could make 3 atomic commits out of the changes I made to the file, much cleaner
11:39	Raynes	Neat.
11:41	Licenser_	now I'll take a shower, eat a burger and see if I add the class stuff next
11:56	Licenser_	,(loop [_ (def x 1)] )
11:56	clojurebot	DENIED
11:56	Licenser_	nice :)
12:25	Licenser_	hmm I really would need a second livetime :(
12:36	Raynes	Licenser: It still doesn't seem to be working right.
12:36	Raynes	When I tried (loop [] (recur)), it gave me a NullPointerException, and (range 1 100000000) just kept on going until the heap ran out of space.
12:38	programble	hello
12:38	programble	is there a clojure equivalent to java's import java.io.* ?
12:39	Licenser_	Raynes: I tried the loop recure ad it worked, very odd
12:40	Raynes	Licenser: What about (range 1 1000000000)?
12:40	Licenser_	can you give me the exact code you ran (with creating the sandbox and all.
12:40	Raynes	Yeah, one moment.
12:40	Raynes	Licenser_: http://gist.github.com/339388 This code is mostly from my bot.
12:40	Licenser_	thanks :)
12:41	arohner	programble: there's no equivalent
12:41	programble	:(
12:42	Raynes	programble: (:import (java.package Class1 Class2 Class3)) is close enough.
12:45	Raynes	Huh. And now it seems to be throwing a security exception for every piece of code.
12:45	Raynes	This is confusing.
12:46	Licenser_	Wow
12:46	Licenser_	Raynes: I'd love to fix this, but I need some kind of test case to work against :(
12:47	Raynes	Licenser_: http://gist.github.com/339394
12:47	Licenser_	ah sorry
12:47	Licenser_	I id miss that
12:47	Raynes	That is with a clean pull from your repo.
12:47	Licenser_	meh
12:49	Raynes	Licenser_: Having all sorts of trouble today. :p
12:49	Licenser_	Raynes: that is good, allows me to improve the library!
12:49	Licenser_	do you have a .java.policy file?
12:49	Raynes	Yeah.
12:50	Licenser_	okay
12:50	Licenser_	so that is not the problem
12:51	Raynes	Licenser_: You can't reproduce the example I pasted above? :o
12:51	Licenser_	Raynes: No, I had to make a .policy file myself :P
12:53	Licenser_	actually no I can't reproduce it o.O
12:53	Raynes	Oh joy.
12:54	Licenser_	http://grab.by/3cLO
12:54	Raynes	http://gist.github.com/339397
12:55	Raynes	The exact code I'm using and the exact error I'm getting.
12:56	Licenser_	Raynes: I don't know what is wrong with your copy
12:56	Raynes	Nor do I.
12:56	Licenser_	http://grab.by/3cLR
12:57	Raynes	Licenser_: A hah!
12:57	Raynes	It's working now.
12:57	Licenser_	aha?
12:57	clojurebot	Paul Graham is the creator of the other new lisp
12:57	Licenser_	what did you do?
12:57	Raynes	Something must have happened to my clone.
12:57	Raynes	I just re-cloned the repo.
12:57	LauJensen	C evaluates math exprs left to right, right?
12:57	Licenser_	pew okay that makes me happy :)
12:57	Raynes	Now let's see if the loop example works now.
12:58	Licenser_	:D
12:58	Raynes	Alright (loop [] (recur)) times out correctly, but (range 1 1000000) does not.
12:58	Raynes	So, everything is working except that.
12:59	hiredman	what about (iterate inc 0)
12:59	Licenser_	Raynes: okay I'll work on the range
13:00	Raynes	hiredman: Same thing.
13:00	Licenser_	aha I think I know the problem!
13:00	Licenser_	:d
13:00	Raynes	:>
13:03	Licenser_	Raynes: actually for me it runs through :P
13:03	Licenser_	999999
13:03	Licenser_	no error at all
13:03	Raynes	I probably have a smaller heap.
13:04	Raynes	Test with (iterate inc 0).
13:04	Licenser_	nods
13:04	Raynes	Same thing.
13:04	Licenser_	not exactly
13:04	Licenser_	a Heap exception is expected if you eat too much heap
13:04	Licenser_	it seems to be 'fast enough' not to trigger a timeout
13:04	hiredman	I imagine the lazy seq is being realized outisde of the sandbox
13:05	Raynes	hiredman: Bingo.
13:05	Licenser_	hiredman: yap it is, just fixed that :)
13:06	Raynes	:)
13:06	Licenser_	Raynes: I write a few tests and push a fix
13:07	Raynes	Alright.
13:07	Raynes	Licenser_: I'm going to have to redo the changes I made, but I wont be able to do that until later. However, expect a pull request later tonight.
13:08	Licenser_	Raynes: cool thanks!
13:24	Raynes	Licenser_: If you get a chance, ping me when you get that pushed.
13:24	Licenser_	Raynes: of cause i'll give you a qry OK?
13:25	Raynes	Kay.
13:25	Raynes	<3
13:25	Raynes	Thanks.
13:28	Licenser_	I'm found a box in the create sandbox code I'd want to fix before pushing
13:50	programble	hm...
13:50	programble	oh nvm
13:55	Licenser_	Raynes: you'll like how I implemented the class stuff :)
14:58	LauJensen	Is there a nice little util where I can inject a (debug-here) to get a repl once that code is eval0red ?
15:23	TobiasR	hey :)
15:23	TobiasR	im kinda new to clojure and got some trouble with compojure anyone able/willing to help me out for a couple minutes?
15:25	dnolen	TobiasR: ask way
15:25	Raynes	Licenser_: Doing (loop [] (recur)) does timeout correctly, but it doesn't stop. I don't think the thread is actually being stopped.
15:26	TobiasR	i built clojure/clojure-contrib and compojure from source and put all jars into a lib folder (subfolder of my project folder)
15:26	Raynes	Licenser_: Do (loop [] (recur)) and then watch your cpu.
15:26	dnolen	TobiasR: any reason you are not just using lein?
15:27	TobiasR	i think i got confused by it somehow but no, no real reason
15:28	LauJensen	~google reddit clone in 91 lines of clojure
15:28	clojurebot	First, out of 64 results is:
15:28	clojurebot	Reddit Clone in 10 minutes and 91 lines of Clojure \| BEST IN CLASS
15:28	dnolen	TobiasR: if you decide to do things from scratch you'll learn a lot but it will definitely be more confusing than just using lein.
15:28	clojurebot	http://www.bestinclass.dk/index.php/2010/02/reddit-clone-in-10-minutes-and-91-lines-of-clojure/
15:28	LauJensen	TobiasR: Go check that out :)
15:28	TobiasR	okay tyvm ill do that
15:38	Raynes	Licenser_: I'm going to toss you an email, just in case you don't get this.
15:48	notallama	i just put my monad library on git, because the contrib one isn't magical enough. http://github.com/hclarke/clojure_combinators
15:48	notallama	basically, i hacked a bit of type inference on. examples and more combinators will come later, probably.
15:54	jwr7	So I've been trying to dig into enlive, but just doing (html-resource "home.html") gives me a NullPointerException (enlive_html.clj line 38). Hmm.
15:55	dnolen	jwr7: enlive looks up resources on the classpath
15:55	jwr7	incidentally, I also get a NullPointerException when doing a C-c C-c in SLIME. C-x C-e works just fine, though.
15:56	dnolen	jwr7: I usually make a directory called resources under src. I use lein to manage the classpath. if you're using netbeans or an IDE, it should handle this for you as well.
15:56	jwr7	dnolen: bingo! Thanks! Though it actually _was_ in the classpath... after I moved it to where my other clj files were, it worked.
15:57	jwr7	dnolen: I use SLIME. Actually, scratch that. I fight SLIME. By the way, what version of SLIME should I be using so that it works with swank-clojure and clojure-1.1?
15:58	jwr7	I've been having all sorts of issues and I wonder what people actually use.
15:58	dnolen	jwr7: I got tired of fighting. I use ELPA to install SLIME and swank-clojure
15:58	jwr7	dnolen: Hmm... I could try that. I got used to using SLIME from CVS when working with CL.
15:59	dnolen	one downside is you have to do some work to get the ELPA SLIME to work with other Lisps. I'm playing around with other CLs at the moment so it's a minor annoyance for me.
15:59	dnolen	I'm not playing around I mena
16:01	jwr7	dnolen: ok, thanks for the hints. I'll try using the ELPA versions and see where that'll get me.
16:01	dnolen	jwr7: should just work. usually take only a couple of minutes to setup.
16:02	jwr7	dnolen: it'll likely take more, as I have a huge baggage of .el customizations back from CL hacking days.
16:02	jwr7	…but I'll give anything for a reliable SLIME and swank-clojure.
16:04	Licenser_	Raynes: I'm here :)
16:05	Raynes	Licenser_: Hi.
16:05	Raynes	:)
16:05	Raynes	I'll be leaving for a while soon, so I sent you the email anyways in case you didn't get what I said earlier.
16:06	Licenser_	nods Just read it :) thanks for the hint I fear you're right
16:06	Raynes	Licenser: One good thing: I think this might be the last bug you have to fix for a while. :)
16:10	Licenser_	Raynes: that makes me a sad Licenser, fixing bugs means people are using the code which gives me the fluffy feeling of being needed :P
16:11	Raynes	Hehe.
16:11	Raynes	Licenser_: clj-sandbox is really important to me at this point. It provides a clean solution for my bot.
16:11	TobiasR	One more (probably stupid) question. The reddit clone worked fine. now i cut out everything except the import and the basic server stuff. Renamed the file etc. Edited the project.clj. But when i try lein compile i get "All :namespaces already compiled." lein clean doesn't work either and if i run the jar from ueberjar it doesnt find the class. Any idea what i might be doing wrong?
16:11	Raynes	Otherwise, I would have had steal hiredman's sandbox.
16:12	Licenser_	:) Raynes, I did the stealing for you :P so actually I'd call it borriwing since I asked ^^
16:12	Raynes	:p
16:12	Licenser_	hrm
16:12	Licenser_	future-cancle isn't a solution
16:13	Raynes	Licenser_: You might have to do what thunk-timeout does.
16:13	Raynes	I'm not sure you can fix this with futures.
16:13	Licenser_	Raynes: I fear I might, but I'd had hoped that I would not have to get another peace from clojurebot, also I found the futures a cleaner less javaish solution
16:13	Raynes	Indeed.
16:14	Raynes	But you need to be able to stop the thread.
16:14	Licenser_	I know
16:15	Raynes	Licenser_: I have to take off for a few hours. Good luck with the fixing of the code. :p I'll pull it and finish up when I get op.
16:15	Raynes	home*
16:16	Licenser_	thanks, for the testing/help Raynes, I'll have the timeouts fixed by the time you get back :) take care and have a good time
16:17	hoeck	TobiasR: you could try to manually delete the classes and lib folders, and then try to lein compile or lein uberjar again
16:27	TobiasR	hoeck: did that already, still nothing
16:28	TobiasR	hoeck: i just run lein from the directory with the project.clj dont i?
16:28	Licenser_	Raynes: I fixed it, it seems future really isn't the solution, gladly hiredman solved the problem already, or actually Chousuke when I get it right from the comments
16:32	Licenser_	hmm how are futurs working exactly, it seems not usable to calce tasks, is that a feature or a bug
16:32	Licenser_	?
16:33	dnolen	Licenser: calce tasks?
16:33	Licenser_	cancel sorry
16:34	dnolen	it create a new Future object which has a cancel method from what i can see looking at the source
16:34	dnolen	,(source future-call)
16:34	clojurebot	java.lang.Exception: Unable to resolve symbol: source in this context
16:38	Licenser_	hmm hmm
16:38	Licenser_	I tried feature-cancle but it didn't work
16:38	jwr7	Ok, so enlive is really, really cool. I'm trying to find out how to construct selectors at runtime and can't see a way to do it. I need to be able to select and do something to [:div.widget#widget-id], but I will know the actual widget-id at runtime.
16:39	hoeck	TobiasR: so your lein compile still gives the same "all :namespaces already compiled" message?
16:39	Raynes	~def future-call
16:39	TobiasR	hoeck: yeah it does
16:39	TobiasR	i created a new lein project now
16:39	TobiasR	hoeck:but still, i guess i configured somethign wrong
16:40	Raynes	Licenser_: About to leave, but chouser and rhickey told me why it didn't work yesterday, or the day before. They'll be able to tell you.
16:40	Licenser_	okay thanks Raynes :)
16:40	hoeck	when invoking a lein on already compiled files, it does not print anything here, just silently quits
17:23	defn	hello everyone
17:23	defn	'lo Licenser_
17:23	Licenser_	hi defn
17:23	Licenser_	how is your parser going?
17:23	defn	not much new in the last day or so
17:24	defn	im gonna play with it right now i think
17:24	Licenser_	cool :)
17:24	defn	since we last talked i did make it output HTML
17:25	defn	i think my next move is to weight code blocks which were said by people who a contributors
17:25	Licenser_	that is discriminatig :P I'll sue you if you do that
17:25	defn	:X
17:25	defn	:)
17:26	defn	hehe yes i know
17:27	Licenser_	you could run the code and wight in if a exception is trhown or not ;P
17:27	defn	wight?
17:27	defn	ohhhh i see what you mean
17:27	Licenser_	weight sorry
17:28	defn	yeah i actually considered that
17:28	Licenser_	I am writing a sandbox library right now if you want to do that :P </advertisment>
17:28	defn	as long as the code ran in a handy little sanbdox and didnt do anything like write to files or execute anything
17:28	defn	yeah!
17:28	defn	gimme gimme Licenser_ !
17:28	defn	:)
17:28	Licenser_	http://github.com/Licenser/clj-sandbox
17:29	defn	awesome
17:33	defn	now i just need to wake up
17:33	Licenser_	ewww I hate fish
17:34	defn	why do you think im smacking myself with one?!
17:34	Licenser_	you're a masochist?
17:34	defn	haha
17:42	Licenser_	defn: so if you want to use the lib feel free to ask me or annoy me :P
17:47	jneira	hi folks!
17:48	jneira	@clojurebot
17:49	Licenser_	hi jneira
17:50	jneira	, (use 'clojure.contrib.json)
17:50	clojurebot	java.io.FileNotFoundException: Could not locate clojure/contrib/json__init.class or clojure/contrib/json.clj on classpath:
17:50	jneira	jum where is json in clojure-contrin 1.1.0????
17:51	jneira	i am a bit confused with that
17:51	Licenser_	jneira: json-read json-write
17:51	Licenser_	that are what the libs are called
17:51	jneira	jum thnx but then i have a problem
17:52	Licenser_	jneira: shoot?
17:53	polypus	stylistic question: when you want to write the empty list, say in a recursive function with it as a base case. what do you guys write; (), '(), (list), nil ?
17:55	Licenser_	polypus: I personally would go with '()
17:56	defn	yeah, that's my sense also
17:56	polypus	that was my first choice. () seems a bit naked
17:56	Licenser_	yea I didn't even know that () works :P
17:56	Licenser_	and (list) seems unnessessary
17:57	Chousuke	and nil is not the empty list :P
17:57	polypus	no but it'll work as a base case for cons
17:57	Chousuke	right.
17:57	Chousuke	in that case I usually use nil
17:57	Chousuke	though most often that ends up being implicit due to use of when or something similar
17:58	Licenser_	Chousuke: the thunk-timeout function comes from you right? I wonder do you know why it does not work with future?
17:58	polypus	k thx guys
17:58	Chousuke	maybe futures are run in a threadpool or something (guess) :P
17:59	Licenser_	hmm
17:59	Licenser_	+
17:59	Licenser_	and the thread pool won't terminate when I tell it to? Sneaky sneaky
18:00	Chousuke	I wrote that function a long time ago. I don't remember what I did :P
18:00	Licenser_	heh
18:00	Chousuke	but I do remember that the thing uses a deprecated API to kill the thread
18:00	Licenser_	:(
18:00	Chousuke	so if there is a threadpool involved, that might not work.
18:01	Chousuke	But there's no way to kill a non-cooperating thread in java other than the stop method, which is deprecated :/
18:01	Licenser_	narf that is evil
18:01	KirinDave	hiredman: You around?
18:04	technomancy	futures run in the agent thread pool
18:04	Licenser_	ah and the thread pool stuff prevents them from being stopped, sneaky
18:05	technomancy	shutdown-agents would stop them, but then there's no way to start them again
18:08	Licenser_	technomancy: but that would stop all agents right not only the one that runs my task?
18:08	technomancy	Licenser_: yeah, it's a shotgun approach
18:08	technomancy	sorry, not paying attention to context
18:08	Licenser_	heh :)
18:08	Licenser_	technomancy: no worries your answers are helping a lot
18:09	Licenser_	that would be the shoting approach :P
18:10	technomancy	beats an EMP
18:11	defn	Licenser_: would you mind taking a look at something for me when you have a chance? I am getting weird java heap sapce problems in my walton code all of a sudden and dont know where they came from
18:11	KirinDave	not for style points ;0
18:11	Licenser_	defn: I'd love to :)
18:11	defn	:)
18:12	Licenser_	ust drop me a link
18:12	Licenser_	*just
18:13	Chousuke	the shotgun approach would be to connect the computer to a machine that fires a shotgun.
18:13	Chousuke	I suppose that would kill the thread for sure :P
18:14	technomancy	Chousuke: lots of edge cases to consider though
18:14	Chousuke	yes. it might also kill the operator
18:14	technomancy	running out of ammo; damage being absorbed by the keyboard and display, etc.
18:14	defn	Licenser_: http://github.com/defn/walton/blob/master/src/walton/core.clj -- I swear the stuff from extract-code -> was working before -- but for some reason it breaks my REPL every time i use it now
18:15	Licenser_	Chousuke: is there a Java API for shotgins? And more importently can we model a clean functional layer around a shotgin? After all they do have a state pretty directly
18:16	defn	if there is not a shotgun library we need to build one
18:17	defn	(defn pull-trigger [shotgun, direction] ...)
18:17	KirinDave	ugh. Annotations are the sand in my shoes.
18:17	Licenser_	defn: did you try to take a new repl?
18:17	KirinDave	Clojure + lots of interop annotations = misery.
18:17	defn	Licenser_: ive made a new repl like 4-5 times
18:17	defn	it breaks every time i call the extract-code fn
18:18	defn	find-lines works, but extract-code breaks it
18:18	defn	but as i said, this was working fine before or i wouldnt have committed it
18:19	Licenser_	okay just to get sure :)
18:19	defn	nod
18:22	Licenser_	defn: did you add the sorted set method just recently?
18:23	Licenser_	that means your entire map gets computed, I think
18:23	Licenser_	that can fill your heap quickly I guess
18:25	defn	Licenser_: yeah, although just running find-lines without limiting my print-length makes it go nuts
18:26	Licenser_	heh
18:27	defn	i mean, i was able to run sorted-set before without any issue
18:27	defn	just trying to figure out what changed
18:27	Licenser_	hmm
18:27	Licenser_	more data?
18:27	Licenser_	bigger search results?
18:27	defn	it should be the same data :\
18:27	defn	can you run that without it breaking on you?
18:28	Licenser_	let me clone that
18:29	Licenser_	do you have the link to the data still=
18:29	defn	yeah it should be in the README
18:29	defn	http://www.devinwalters.com/clojure-logs.tar.bz2
18:30	Licenser_	ah okay
18:30	Licenser_	Gets the data
18:32	Licenser_	defn: I get java.io.FileNotFoundException: Could not locate clj_html/core__init.class or clj_html/core.clj on classpath: (core.clj:1)
18:33	defn	you ran lein deps?
18:33	Licenser_	ah yea :P
18:33	Licenser_	good point
18:33	Licenser_	narf
18:33	defn	hehe :)
18:33	KirinDave	hiredman: Reping
18:33	Licenser_	I hoped lein repl would do that :(
18:33	KirinDave	uhg, bad word merge
18:33	defn	Licenser_: i got it to work after removing the sorted-set and reducing my print-length to 10
18:34	Licenser_	hmm
18:34	defn	ah-ha, if i add sorted-set it breaks
18:34	defn	you were correct
18:35	Licenser_	:)
18:35	Licenser_	I keep getting no results, I wonder why
18:35	defn	M-x slime-set-default-directory
18:36	defn	and then set the project root as your directory
18:36	Licenser_	you should not have your local thing as the defaullt ;)
18:37	Licenser_	better
18:38	Licenser_	and yes I got a OOM exception too
18:38	Licenser_	I guess you just find too much so it is odd
18:38	Mec	is it a problem to put a conditional before a call to swap! or do i need to put it inside the swap! call?
18:39	Licenser_	hmm hmm I even get it for an no hut situation
18:40	Licenser_	unless I'm mistaken and there is a lot of discussion about the concatcatcat function
18:41	Licenser_	I think apply might be the evil doer here
18:42	technomancy	Mec: "a conditional" is pretty vague
18:42	defn	i dont like evil doers
18:42	technomancy	Mec: if the condition affects the atomicity of the change it should be inside the call to swap
18:43	Mec	technomancy: sorry, i check if the map has a key, and if not then i swap! with assoc
18:43	Licenser_	nope happens with set too
18:44	technomancy	Mec: in that case I think it's more correct to perform the check inside the swap to avoid (very unlikely) a race condition
18:45	Licenser_	wow I even get the problem when I remove the set thing
18:45	defn	Licenser_: yeah i just saw that as well
18:45	Mec	technomancy: ok thanks, i thought so
18:45	defn	Licenser_: something is very wrong here....
18:45	Licenser_	aye and I wonder what :)
18:47	Licenser_	okay even when returning the sort results I get this error, which is odd
18:49	defn	Licenser_: yeah it is a very angry piece of code
18:49	defn	:(
18:49	Licenser_	we'll find the bad bad memory eater don't worry
18:49	defn	junkies!
18:49	defn	jinkies! rather
18:51	Licenser_	defn: heh
18:52	Licenser_	it seems the data set is too big for the repl
18:52	Licenser_	(reduce + (map count parsed-logs)) creates a out of memory exception
18:52	defn	uh oh...
18:52	Mec	Is there a pastie site specific for this channel?
18:53	defn	Mec: everyone uses gists on github
18:53	defn	Mec: they give nice syntax hilighting taboot aboot!
18:53	Licenser_	defn: if we can make it entirely lazy we should be happy
18:53	defn	Licenser_: yes, when does it become un-lazy
18:54	Licenser_	in the moment you search it
18:54	defn	oh! right! :)
18:54	defn	Licenser_: im able to use find-lines
18:54	Licenser_	you are?
18:54	defn	i just need to make sure i have my print-length very low
18:55	defn	i have it at 10 right now
18:55	defn	(set! print-length 10)
18:55	Licenser_	defn: I used (def _ (find-lines ...)) so no output should have been given
18:56	defn	maybe print-level?
18:59	Mec	technomancy: could you see if this looks right? http://gist.github.com/339625
18:59	Licenser_	defn: no it's not a print issue, def does not print anything
19:00	technomancy	Mec: you might be able to perform the same thing with merge
19:01	defn	Licenser_: I just magically got this to work: (map #(re-find regex %) (find-lines "zipmap" parsed-logs))
19:01	defn	where regex is: (def regex (re-pattern (str "\$." "zipmap" ".\$")))
19:01	Licenser_	defn: fixed it :)
19:01	technomancy	(doc merge)
19:01	clojurebot	"([& maps]); Returns a map that consists of the rest of the maps conj-ed onto the first. If a key occurs in more than one map, the mapping from the latter (left-to-right) will be the mapping in the result."
19:01	technomancy	merge the hash with {location {}} in such a way that the original hash "wins"
19:02	Mec	technomancy: ok, thanks
19:02	defn	Licenser_: i changed the map in parsed-logs to a pmap, but that's probably not that big of a difference
19:02	Licenser_	defn: making your search a global variable does not really seem like a solution :)
19:02	Mec	technomancy: lacking a merge function is that how you would do it or is there a cleaner way?
19:02	defn	Licenser_: heh
19:03	Licenser_	give me a second and I post you something
19:04	defn	it seems like it is working now after i removed the (remove empty?...)
19:05	technomancy	Mec: yeah, if I didn't have merge I'd do it like you pasted
19:05	Licenser_	0.5s to run the query and no heap problems
19:05	Licenser_	hardly eats any memory
19:06	Licenser_	I'll fork and change it :9
19:06	defn	apply sorted-set and remove empty? both absolutely kill it
19:07	jneira	well people im stuck with java.lang.VerifyError: class xxx overrides final method meta.()Lclojure/lang/IPersistentMap
19:08	jneira	hi Licenser_
19:08	Licenser_	hi jneira
19:08	jneira	and everyone
19:08	Licenser_	defn: o.o forgot about the sorted set, testing right now
19:08	Licenser_	1.5s but no heap problem
19:09	jneira	i think is related to versioning ..
19:09	defn	i can live with that
19:09	defn	Licenser_: was it the with-out?
19:09	defn	im interested to see this
19:09	Licenser_	defn: no with everything :)
19:09	defn	haha d'oh
19:11	defn	Licenser_: let me know when you make the pull request, and thank you again for helping me :)
19:11	Licenser_	defn: :) no worreis and yes I always wanted to try out that pull request thing :P
19:14	ericthorsen_	anyone know if the clojure assets on build.clojure.org are built with 1.5 or 1.6 ?
19:14	defn	hah Licenser_
19:15	defn	i know the feeling
19:15	Licenser_	defn: sory that you are my guiny pig here :P
19:16	defn	Licenser_: Collaborating is fun
19:17	Licenser_	defn: yap, sadly I hand't had the change to recolaborate that often yet :) so I am happy to finaly try out this pull requests
19:17	defn	nod
19:19	Licenser_	defn: you got a pull request.
19:20	jneira	mmm the error was caused for classes of a prev compilation
19:21	jneira	i guess
19:22	jneira	but i think errors continue being unfriendly
19:22	jneira	in clojure
19:24	defn	Licenser_: pulled
19:24	Licenser_	defn: and working for you too=
19:26	jneira	yeah! (public-timeline) working with core/contrib 1.1.0
19:27	Mec	is there a keybind to eval a whole buffer in emacs?
19:27	defn	Licenser_: yes it is :)
19:27	defn	it was the with-out, huh?
19:27	jneira	c^c c^r
19:28	jneira	i think
19:28	Licenser_	without wat?
19:28	Licenser_	what?
19:28	clojurebot	what is short for ,(doc ...)
19:28	defn	Licenser_: errr with-open
19:28	Licenser_	defn: this opens a file and ensures it is closed at the end of the (with-open) form again
19:30	Mec	jneira: thats just giving me a weird error
19:30	jneira	jum
19:30	defn	Licenser_: tricky! added the sandbox! :)
19:30	Licenser_	yap ;)
19:30	jneira	first you hava to select all buffer
19:30	Mec	oh
19:30	Licenser_	just wanted to see if it works, and it actually does, with hardly 5 LOC
19:30	defn	awesome!
19:31	Licenser_	so I can't guarantee that it actually is secure, or will not block coreckt code
19:31	jneira	M^< C^spc M^> and C^c C^r
19:31	jneira	well you can select all buffer with ...i dont remeber
19:32	defn	Licenser_: I can live with that for now :)
19:32	Mec	as soon as i hit C-c it deselects the buffer
19:32	Licenser_	so it is kind of coll that you only get examples that work actually
19:32	defn	yeah although one of them may run some java code that deletes your / partition
19:32	defn	;)
19:33	Licenser_	defn: that is very unlikely :P
19:33	jneira	jum
19:33	Licenser_	if you enable jvm security it should block that
19:33	technomancy	(heading out for a while, but please msg or email me with your thoughts if you have a chance to review it.)
19:33	Licenser_	and in theory the sandbox is quite tight since it's only letting you use a whitelist of functions
19:34	Licenser_	and I did not (partition-hard-disk) in there
19:34	jneira	C^x h to select all buffer
19:34	Mec	same thing, after that C-c deselects it
19:34	defn	Licenser_: hahaha, touche
19:35	Licenser_	but you can add that yourself if you liek the trhill
19:36	jneira	mmm C-c deselects? i am afraid not for me
19:36	defn	im all about the thrill Licenser_
19:36	defn	:
19:36	defn	:)
19:36	Licenser_	defn then you can use the debug-tester :P
19:37	Licenser_	that lets through all code
19:37	defn	i think ill run it in a VM for now ;)
19:37	Licenser_	:P
19:38	Licenser_	defn: I /think/ even with that it should not whie your hard disk
19:38	Licenser_	so I have the feeling that 'thinking' is not good when it comes to security
19:38	Mec	jneira: ah i've got CUA turned on
19:39	jneira	cut & paste evil
19:41	defn	Licenser_: haha
19:42	defn	Yes I think that thinking can be exactly the problem with security (I think)
19:43	Licenser_	don't think so much, just trust in the force!
19:43	defn	hahaha
19:43	defn	Licenser_: I am your father.
19:43	Licenser_	no you're not :P
19:44	defn	okay time to go play with this walton code now that it's not breaking my REPL :)
19:44	defn	thanks again Licenser_
19:44	Licenser_	you're welcome defn :)
19:54	defn	Licenser_: haha this sandbox is great
19:55	defn	Licenser_: it turns 106 lines of matched code into 40
19:55	defn	much better examples
20:07	Licenser_	defn: I'm really glad to hear that :D
20:07	Licenser_	There are so many applications for a sandbox that I just keep seeing them everywhere now
20:49	Mec	is there a way to use dissoc-in without it removing an empty map
20:51	chouser	the purpose of dissoc-in is to remove (dissoc) something -- why behavior do you want instaed of removing?
20:51	chouser	s/why/what/
20:52	Mec	i want to remove the inner key/val but not the map if it results in being empty
20:53	Mec	so like (dissoc-in {:a {:b :c}} [:a :b]) -> {:a {}}
20:54	chouser	oh, I see.
20:54	chouser	,(update-in {:a {:b {:c :d}}} [:a :b] dissoc :c)
20:54	clojurebot	{:a {:b {}}}
20:56	Mec	oh nice, thanks
21:07	Mec	I read the description of update-in but it was hard to grasp
22:14	Raynes	Licenser_: I'm about to issue a pull requestion.
22:14	Raynes	request*
22:25	Raynes	Where is clj-io hosted?
22:25	Raynes	I sees it, but I don't has it.
22:36	technomancy	Raynes: I don't think there's much difference between clj-io and clojure.contrib.io (and hopefully clojure.io in the future)
22:38	technomancy	it's on clojars anyway if you don't want to pull in the rest of contrib
22:47	Raynes	technomancy: I was asking because I had no idea what it actually was.
22:48	Raynes	Not because I wanted to use it. :P
23:22	rads	when I try to use congomongo in a leiningen task, I get this error: Exception in thread "main" java.lang.ExceptionInInitializerError (coerce.clj:1)
23:22	rads	any ideas on what that means?
23:34	technomancy	Raynes: it was a way to propose clojure.io for inclusion in clojure itself before the clojure.lib idea came up