#clojure – 2010-07-28

2010-07-28

00:00	daaku	wwmorgan: aww.. i kept searching for clojurerc -- that's probably what i want
00:00	seancron	Does anyone have any suggestions on using agents to look up hosts repeatedly?
00:42	slyrus	one of the things that I often misabuse ASDF for is the location of project-relative files (data files, etc...). How can I locate a file relative to some directory that's on the CLASSPATH?
00:45	tomoj	(.getResource (clojure.lang.RT/baseLoader) "<CLASSPATH-relative filename>")
00:46	tomoj	or (.getResourceAsStream ...)
00:46	slyrus	thanks tomoj
00:49	slyrus	ah, that and a lein resources directory and I'm good to go. great!
01:27	gstamp	hrmm. hash-combine doesn't have a doc string. I assume it creates a new hash from two existing hashes?
01:55	dublindan	http://clojure-games.org (a very very early work in progress)
02:35	slyrus	ok, name me two actors/actresses
02:36	ttmrichter	slyrus: Aishwarya Rai, Steve Buscemi.
02:36	ttmrichter	(I would pay loads of money to see those together in a movie.)
02:37	slyrus	("Steve Buscemi" "Things to Do in Denver When You're Dead" "Andy García" "The Pink Panther 2" "Aishwarya Rai")
02:38	slyrus	not in a movie together, but close...
02:39	ttmrichter	So why did you want two actors/actresses?
02:39	slyrus	(map :name (graph/find-node actor-film-graph (get-actor-node "Aishwarya Rai") (get-actor-node "Steve Buscemi")))
02:39	slyrus	my kevin-bacon-solver
02:39	ttmrichter	A six degrees of Kevin Bacon with movie stars?
02:39	slyrus	yeah
02:39	ttmrichter	Dammit!
02:39	ttmrichter	What's your data source?
02:39	slyrus	freebase
02:40	slyrus	100k movies, 75k actors, or so.
02:40	ttmrichter	OK, let's see if I can't break it.
02:40	ttmrichter	Peter Falk and Bipasha Bipu
02:41	ttmrichter	Doris Day and Faye Wong
02:42	slyrus	("Faye Wong" "2046" "Takuya Kimura" "Howl's Moving Castle" "Lauren Bacall" "Young Man with a Horn" "Doris Day")
02:42	ttmrichter	Damn!
02:42	slyrus	unfortunately, the Peter Falk search turned up empty...
02:42	ttmrichter	Hah!
02:42	ttmrichter	NOBODY stars with Peter Falk!
02:42	ttmrichter	Except through Columbo!
02:42	ttmrichter	Where everybody stars with Peter Falk! :D
02:42	absalom	Mikhail Gorbachev did...
02:43	slyrus	well, that's not true, it's just that Bipasha Bipu isn't in there.
02:43	slyrus	is the spelling right?
02:43	ttmrichter	Oh.
02:43	ttmrichter	I... think so?
02:43	ttmrichter	Let me check.
02:43	slyrus	("Peter Falk" "The Thing About My Folks" "Olympia Dukakis" "The Great New Wonderful" "Naseeruddin Shah" "Dus Kahaniyaan" "Bipasha Basu")
02:43	slyrus	basu?
02:43	ttmrichter	Ah, my bad.
02:43	ttmrichter	Basu.
02:44	slyrus	the ya go
02:44	slyrus	s/the/there/
02:44	sexpbot	there ya go
02:44	ttmrichter	Gong Li and Charlie Chaplin.
02:45	slyrus	("Charlie Chaplin" "A King in New York" "Phil Brown" "Johnny Kapahala: Back on Board" "Cary-Hiroyuki Tagawa" "Memoirs of a Geisha" "Gong Li")
02:46	ttmrichter	Man, that's shorter than I expected.
02:46	ttmrichter	I guess that goes to show how inbred the movie industry is, right?
02:47	Chousuke	what happens if it can't find a connection?
02:47	slyrus	yeah, don't ask me to run the graph-distance-matrix to compute all pairwise distances though :)
02:47	slyrus	Chousuke: the universal no connection answer, the empty list :)
02:47	Chousuke	heh
03:05	LauJensen	Good morning all
03:07	unfo-	morning LauJensen
03:16	slyrus	if anyone wants to try out cinematograph, it's here: http://github.com/slyrus/cinematograph
03:28	slyrus	or you can just keep throwing pairs of actors/movies at me and I'll tell you how they're connected :)
03:28	ragnard	(doc declare)
03:28	clojurebot	"([& names]); defs the supplied var names with no bindings, useful for making forward declarations."
03:29	ragnard	sorry, missed the repl
04:41	raek	does anyone know what seqs are chunked?
05:45	cais2002	hi, is there a quick guide on how to create my own task for leiningen?
05:49	raek	http://github.com/technomancy/leiningen/blob/master/PLUGINS.md
05:49	raek	this is what I know of
05:51	raph_amiard	Hi there
05:51	raph_amiard	i want to know, if i want simple syntax highlighting for clojure in vim
05:51	raph_amiard	i don't want slimv nor vimclojure/gorilla
05:51	raph_amiard	in my opinion they are complicated and way too big and buggy for my tastes
05:52	raph_amiard	what are my options ?
05:54	cais2002	raph_amiard: I am using vimclojure and mainly just for syntax highlighting and Ctrl+N for autocompletion. you can ignore those adv features
05:55	raph_amiard	yeah well you're probably right
05:56	raph_amiard	but i find installation to be seriously horrible but i guess i can just grab the vimclojure's syntax file ?
06:01	bonega	Hi - Can anybody share some good thoughts regarding -> and ->>
06:01	bonega	I understand the usage - but have a hard time deciding when it's appropriate
06:02	bonega	I am using Forth in my job - so I am a bit damaged...
06:02	raek	(f1 a (f2 c (f3 e (f4 x) f d) b) <--- not very readable
06:03	bonega	Try working in forth ;)
06:03	bonega	Nah - more if there exists some consensus at what complexitivity level it becomes appropriate
06:03	raek	bonega: if you know forth then I don't have to explain why the -> syntax is no neat...
06:04	raek	if the code looks simpler and more readable, go for it
06:05	bonega	yes ty - I am only worried for the ones that have to work with my code...
06:05	raek	imo, you should expect clojure programmers to understand ->
06:06	raek	it might be overkill to use it for just 2 forms, but for 3 or more I don't see why it should be bad
06:08	bonega	I hate having to base my decisions on what feels right :(
06:09	bonega	raph_amiard: You should really use a editor that is parens aware and have REPL integration
06:09	bonega	I am a vim user myself, but couldn't seem to get vim setup right for Clojure
06:09	bonega	So for the moment I am using Eclipse and Counterclockwise
06:10	bartj	bonega, having tried vim to get working with Clojure for nearly 6 months, and using it - I know it is highly frustrating
06:10	bOR__	stupid simple question. If I want a global var to return a new random number (def myvar (rand)), how should I write it?
06:10	cais2002	raph_amiard: I just followed the instructions and ignored the ng server related stuff
06:10	bartj	bonega, my best suggestion to you is to use emacs - paredit, etc just rocks
06:11	bonega	I have no time learning another OS ;)
06:11	bOR__	(def myrand (first (take 1 (repeatedly #(rand))))) doesn't seem to work :).
06:12	raph_amiard	bonega: I used emacs for 1 year for clojure
06:12	raph_amiard	bonega: still hate it in the end though
06:13	raph_amiard	bonega: but the lisp integration is wonderfull
06:13	raph_amiard	i guess i'm gonna try emacs with vimpulse
06:13	raph_amiard	maybe it'll be enough
06:14	bOR__	I'll just go for (defn myvar [] (rand))
06:14	bonega	That's an abomination
06:14	bOR__	would have liked a dev solution.
06:14	bOR__	def.
06:15	Nikelandjelo	bOR__: (def myvar (fn [] (rand) ) )
06:15	raek	bOR__: your first example always gives the same value
06:16	raek	it evalueates (first ...) and binds that value to the var
06:16	bOR__	raek - that I noticed.
06:16	bonega	please don't call it something like myvar - it's still a rand function
06:16	bOR__	bonega - it is just a simple example of something else.
06:16	bonega	roger
06:17	raek	bOR__: how do you want to use it?
06:17	Lajla	,
06:17	clojurebot	Lajla: Excuse me?
06:17	bOR__	was using iterate to generate a stream of a certain process, noticed that the x in the iterate function would stay the same if I did a (def myvar (iterate (partial + 2) (rand-int 10)))
06:18	raek	rand-int is only called once
06:19	bOR__	raek - yes, but how can I get it to be called each time I look up the def?
06:19	Lajla	raek, I long to consume your mortal soul.
06:19	bOR__	(count (take-while (partial some #(= (:rat %) :healthy)) burrow-stream)) is what I'm using it for.
06:20	bOR__	counting the time till a whole gerbil burrow is infected with the plague ;).
06:20	raek	bOR__: you wrap everything in a defn insead
06:20	bOR__	nod, that was my solution.
06:20	raek	functions run code, values are fixed
06:20	bOR__	was wondering if there was a way to def it.
06:20	bOR__	good point.
06:21	raek	this could be of use maybe: (defn make-rand-int-seq [] (repeatedly rand-int))
06:22	raek	(let [a-rand-seq (repeatedly rand-int)] [(take 4 a-rand-seq) (take 7 a-rand-seq)])
06:22	raek	,(let [a-rand-seq (repeatedly rand-int)] [(take 4 a-rand-seq) (take 7 a-rand-seq)])
06:22	clojurebot	java.lang.RuntimeException: java.lang.IllegalArgumentException: Wrong number of args (0) passed to: core$rand-int
06:22	raek	,(let [a-rand-seq (repeatedly #(rand-int 10))] [(take 4 a-rand-seq) (take 7 a-rand-seq)])
06:22	clojurebot	[(4 5 4 4) (4 5 4 4 2 3 8)]
06:22	raek	then multiple processes can share the same sequence of random numbers
06:22	bOR__	thanks raek, but iterate is the one I wanted. put an infected flea in a burrow with rats, process a timestep, process another timestep on the result of the first process, etc.
06:23	serp_	,(take 5 (repeatedly (partial rand-int 10)))
06:23	clojurebot	(0 9 9 3 2)
06:23	bOR__	ah, raek - yep.
06:25	Lajla	serp_, my beloved, I've crossed oceans of time to be with you.
06:28	zmila	,(bit-not 65535)
06:28	clojurebot	-65536
06:51	raph_amiard	Re here
06:51	raph_amiard	i'm trying to make slime work with liebke's cljr swank command
06:51	raph_amiard	but i'm hitting a wall :/
06:51	raph_amiard	"make client process failed: connection refused, :name, SLIME Lisp, :buffer, nil, :host, 127.0.0.1, :service, 4005"
06:52	raph_amiard	when i launch "cljr swank 4005", it's just hanging in there so i imagine it's working
06:55	raek	i haven't used cljr, but when you start swank in other ways (from the repl, or with lein swank, etc) it usually prints a line that says that it is listening on a port
06:55	raph_amiard	okay
06:55	raph_amiard	i have got no such line, nothing at all.
06:56	raph_amiard	that means few debug information too ..
06:56	raek	try connecting to the port with telnet or something to check if there is something listening
06:56	raph_amiard	good idea
06:56	raph_amiard	i'm also maybe gonna try starting a swank server with leiningen
06:56	raph_amiard	to see if it works there
06:57	raek	what is cljr, btw? a packet manager?
06:57	raph_amiard	well it is a very cool project from liebke, the guy who does incanter
06:58	raek	ah, read on the project page
06:58	raph_amiard	http://github.com/liebke/cljr
06:58	raph_amiard	basically it's a clojure environnement for things that don't fit in the leiningen project model
06:58	raek	to make starting a repl for things that are not projects easy, right?
06:58	raph_amiard	yeah exactly
06:58	raek	neat
06:59	raph_amiard	yeah also the ability to install libs system wide is very cool
07:00	raek	well, now clojure has the best of both worlds, then...
07:00	raph_amiard	so much of my activity with clojure is fast scripting, testing out ideas
07:00	raph_amiard	yeah i hope
07:00	raph_amiard	i don't know leiningen so well though
07:00	raph_amiard	but it seems really good
07:02	raph_amiard	yeah well i think cljr swank server is not working
07:08	raek	:(
07:43	gfrlog	can I access a public instance variable of a java object in clojure? Or does there have to be a method to call?
07:45	raek	(. instance field)
07:45	gfrlog	works perfectly, thanks
07:45	rhudson	I think (.field instance) works too
07:46	gfrlog	oh geez it does
07:46	gfrlog	I thought I had tried that
07:46	gfrlog	but I actually hadn't
07:47	raek	yeah, the (.field instance) is probably preferred
07:48	raek	all of this is documented here: http://clojure.org/java_interop
07:48	gfrlog	thanks; I'm mostly familiar with the interop. Just don't deal with public variables often
07:49	raek	ok. yeah, setters and getters are more common
07:49	raek	if it has getters, consider using bean
07:49	gfrlog	right
07:50	gfrlog	I found a bug in bean actually; at least in older versions (I think 1.1?)
07:50	raek	oh
07:50	raek	what does it do? have you created a ticket?
07:51	gfrlog	should I check it on the master branch before creating a ticket?
07:51	gfrlog	bean returns a map
07:51	gfrlog	and if you try to access a nonexisting key it throws an NPE
07:51	gfrlog	I assume that's a bug
07:51	chouser	it's on master, but I'm not sure if it's a bug.
07:51	gfrlog	there's certainly no warning about it in
07:52	gfrlog	(doc bean)
07:52	clojurebot	"([x]); Takes a Java object and returns a read-only implementation of the map abstraction based upon its JavaBean properties."
07:52	chouser	you can give a "notfound" value to return...
07:52	chouser	hm
07:52	gfrlog	you can?
07:52	gfrlog	(bean 128 99)
07:52	gfrlog	,(bean 128 88)
07:52	clojurebot	java.lang.IllegalArgumentException: Wrong number of args (2) passed to: core$bean
07:52	chouser	, (:foo (bean Object) :bar)
07:52	clojurebot	:bar
07:53	gfrlog	yes but
07:53	gfrlog	,(:foo {})
07:53	clojurebot	nil
07:53	gfrlog	why would we want different behavior?
07:54	gfrlog	,((bean "jokes") :foo :bar)
07:54	clojurebot	:bar
07:54	chouser	,(:foo (assoc (bean Object) :a :b))
07:54	clojurebot	java.lang.reflect.InvocationTargetException
07:54	gfrlog	that's fine because the docs say it's read-only
07:54	chouser	huh. that returns nil for me
07:54	chouser	,(:a (assoc (bean Object) :a :b))
07:54	clojurebot	java.lang.reflect.InvocationTargetException
07:55	chouser	and that returns :b
07:55	gfrlog	what version are you using?
07:55	chouser	gfrlog: you're probably right that it's a bug. best to start by mentioning it on the google group.
07:55	chouser	gfrlog: some recent master.
07:56	gfrlog	does your recent master throw the NPE as well?
07:56	chouser	yes
07:56	gfrlog	okay
07:56	gfrlog	I'll try the google group, but last time I tried posting it never got there
07:56	gfrlog	is there some extra registration process I'm unaware of?
07:57	chouser	hm, no -- your first few posts should be held in a queue until manually approved (to reduce spam) but no other registration.
07:58	gfrlog	hmm
07:58	gfrlog	okay
07:58	gfrlog	I guess my post wasn't clever enough
07:58	chouser	heh
07:58	gfrlog	,(bean Object)
07:58	clojurebot	java.lang.reflect.InvocationTargetException
07:59	gfrlog	,(bean (Object.))
07:59	clojurebot	{:class java.lang.Object}
07:59	chouser	ah
07:59	chouser	,(:foo (assoc (bean "") :a :b))
07:59	clojurebot	nil
07:59	chouser	,(:a (assoc (bean "") :a :b))
07:59	clojurebot	:b
07:59	gfrlog	your clojure lets you call bean on a class?
07:59	chouser	yup
07:59	gfrlog	,(assoc (bean "") :a :b)
07:59	clojurebot	{:a :b, :bytes #<byte[] [B@1f1df3f>, :class java.lang.String, :empty true}
07:59	gfrlog	I wonder what "read-only" means
08:00	chouser	you can't call setters of the bean object
08:00	gfrlog	okay, so it doesn't mean anything important in clojure, just if you were thinking of doing fruity java things with it?
08:00	chouser	I think so, at least that's how I read it.
08:01	chouser	and since the thing bean returns allows assoc, I don't see how someone could justify the NPE at all.
08:01	gfrlog	yeah
08:02	gfrlog	,(:haha (assoc (bean "") :a :B))
08:02	clojurebot	nil
08:02	rhudson	,(class (assoc (bean "") :a :b))
08:02	clojurebot	clojure.lang.PersistentArrayMap
08:03	gfrlog	,(class (bean ""))
08:03	clojurebot	clojure.core.proxy$clojure.lang.APersistentMap$0
08:09	rhudson	Hmm. The implementation's creating a map of accessor functions 'pmap , then just indexing on 'k as ((pmap k)). No entry for k => NPE
08:15	gfrlog	I don't suppose you can compile java code from within clojure can you?
08:16	bortreb	grflog: sure, use something like lancet
08:16	gfrlog	okay, I'll look into it, thanks
08:17	bortreb	examples are a little thin right now so if you want a working example i can send you one
08:17	gfrlog	I can't object to that
08:17	raek	I guess you could also run a leiningen plugin from clojure
08:17	gfrlog	I've never dynamically compiled java code from java even, so I'd have similar questions there
08:25	bortreb	ok, I packed up a project I'm working on at www.rlmcintyre.com/probes.tar.bz2 for you
08:25	gfrlog	cool, thanks!
08:26	bortreb	it also shows how to use clojure as a command line script
08:26	bortreb	just unpack it and change the shebang line on the quake file at the base, then run "quake -c"
08:27	bortreb	question: I want to sign the contributor agreement, but how do I fill out the form
08:30	bortreb	like, do I put under project name, github? or clojure-contrib? help pls...
08:30	bortreb	gfrlog: you also have to change quake-conf too, sorry
08:36	raek	bortreb: project name should be "clojure", "clojure-contrib" or both
08:37	lozh	Anyone know if emacs/slime/paredit has something to comment out the top level form your point is in?
08:37	raek	some of the things listed on the page didn't have their own fields, so I wrote them on a blank space on the paper
08:37	bortreb	but it also says to include your assembla and github usernames, so how would he know which is which?
08:38	bortreb	oh ok
08:38	gfrlog	botreb: I think your server has stopped responding
08:38	gfrlog	I got 58% through the download
08:38	raek	I wrote something like "github username: raek" "assebla username: raek"
08:38	bortreb	oh noes maybe wget -c ? let me look for a sec
08:38	raek	this form will not be read by a machine
08:39	gfrlog	I also tried loading it in a browser initially, and that didn't work either
08:39	raek	so, anything a human can understand will do, I suppose
08:39	bortreb	yeah, I'm being silly
08:41	raek	well, the form does not contain all fields...
08:42	bortreb	maybe a pdf on the website showing one acceptably filled out would allievate confusion
08:43	bortreb	wow my server actually did crash
08:45	gfrlog	and just now wget retried so many times that it just spit out "Giving up." and stopped
08:46	bortreb	server's back
08:46	gfrlog	also for some reason after each try it said "probes.tar.bz2 has sprung into existence." -- I'm not sure what that means
08:46	gfrlog	and it's done
08:46	gfrlog	thanks
08:47	gfrlog	heading out now
08:47	bortreb	see ya
09:35	brandonw	hmm
09:35	brandonw	oh i think i have been unbanned :)
09:36	brandonw	i tried an auto-away message script that monitors your screen session. apparently that creates some kind of spam and i was temp-banned from this channel
09:40	raek	welcome back
10:05	brandonw	unless technomancy worked his magic and somehow got me unbanned :)
10:23	eckroth	I don't want "patterns" in my code, but I find myself doing this alot (for records): (assoc this :xs (conj (:xs this) x)) ; is there a shortened version of this, and do others do this often as well?
10:24	ztellman	(update-in hash [:xs] #(conj % x))
10:26	eckroth	ztellman: ah perfect, thanks
10:26	ztellman	eckroth: no problem, I always thought that was really awkward until I discovered update-in
10:26	eckroth	ztellman: exactly
10:28	chouser	,(update-in {:a [1]} [:a] conj 2)
10:28	clojurebot	{:a [1 2]}
10:28	mefesto	does it also work w/out the annonomus func?
10:28	chouser	you don't need the anon fn
10:28	ztellman	chouser's right
10:28	ztellman	I always use anonymous functions, but that's a bad habit
10:36	rbe	hi
10:37	rbe	can someone point me to a documentation for &v (without space) please?
10:37	lozh	slighly unfortunate that #(fn x %) is shorter than (partial fn x)
10:40	rbe	,(binding [a 111] (let [[&a b] [1 2]] (list a b)))
10:40	clojurebot	java.lang.Exception: Unable to resolve var: a in this context
10:40	rbe	this works in clojure 1.2
10:40	rbe	(111 2)
10:41	eckroth	chouser: thanks; right after I replaced the pattern with update-in, your comment let me delete a lot of #(... % ...) :)
10:41	chouser	:-)
10:41	raek	,(binding [a 111] (let [[& a b] [1 2]] (list a b)))
10:41	clojurebot	java.lang.RuntimeException: java.lang.RuntimeException: java.lang.Exception: Unsupported binding form, only :as can follow & parameter
10:42	raek	nevermind
11:00	Bahman	Hi all!
11:00	Lajla	Ahh, Bahman, my one true love, let me worship Your Shadow.
11:03	Lajla	ttmrichter, ahh, my one true love, never did I love one such as I do you.
11:03	ttmrichter	Keep it down! My wife's like two feet away from me!
11:06	Lajla	ttmrichter, ah, your wife, my one true love, never had I loved one such as I love her.
11:25	tashafa	hello all
11:25	wakko10warner	does anyone here know how to get bobot++ to run with free node.
11:26	wakko10warner	I think that bobot++ allows lispy scripting and I want to use it.
11:26	cemerick	tashafa: my gawd, he's got voice! ;-)
11:27	wakko10warner	,(println "help wakko with bobotpp")
11:27	clojurebot	help wakko with bobotpp
11:29	tashafa	cemerick: finally figured it out
11:32	dnolen	lancepantz: ping
11:32	tashafa	cemerick: your tweet about irc and clojure highlighting made me try again
11:32	cemerick	heh
11:35	cemerick	tashafa: entirely tangentially: "[Emacs crashed opening the large file.] The file opened quickly on Windows, even my 32-bit XP box, using Notepad++." http://www.johndcook.com/blog/2010/07/28/miscellaneous-emacs-adventures/
12:01	tashafa	cemerick: ha
12:39	jfields	,(do (defn x [{y :k} {z y}] z) (println (x {:k :v} {:v :s})))
12:39	clojurebot	DENIED
12:41	raek	,(let [x (fn [{y :k} {z y}] z)] (println (x {:k :v} {:v :s})))
12:41	clojurebot	:s
12:44	bortreb	So I've been trying to get clojure to work as a command line scripting language for some time
12:44	bortreb	and finally came up with this pun that gets it to work
12:45	Raynes	-> (def x (fn [{y :k} {z y}] z))
12:45	sexpbot	=> #'net.licenser.sandbox.box3508/x
12:45	Raynes	-> (println (x {:k :v} {:v :s})))
12:45	sexpbot	=> :s nil
12:45	bortreb	":";exec java -cp '.:./lib/' clojure.main $0 $;
12:45	bortreb	what do you guys think?
12:45	bortreb	just replace the #! with ":"; and everything works
12:46	bortreb	I got the idea from http://www.emacswiki.org/emacs/EmacsScripts
12:46	raek	bortreb: seen this? http://en.wikibooks.org/wiki/Clojure_Programming/Tutorials_and_Tips#Shebang_Scripting_in_Clojure
12:46	raek	I dunno what works best
12:46	jfields	raek, you got the idea for what I was trying to do
12:47	jfields	I'm destructuring once and using the result to destructure again, is that insane or expected?
12:47	jfields	I'm deciding if I want to do that in my prod code.
12:47	raek	but I guess this has ben thunk upon before
12:49	raek	btw, that example is a bit outdated... clojure.lang.Script is not used anymore
12:49	bortreb	using a #!/usr/bin/env clj directly is lame because you have to have your own clj executable
12:50	bortreb	and using #!/usr/bin/env java args just doesn't work at all under ubuntu since you can only put one argument on the shebang line
12:51	bortreb	their rediculous three line thing works but is equivalent to my ":";
12:51	jstirrell`	test
12:54	bortreb	should I add it to the wiki or is it bad ?
13:01	jstirrell`	Hi guys, I'm new and have a question: I have a sequence of hash maps. each hash has a :type. the first hash in the sequence has a type :date. after that there are any number of :time and :text types (a :text type will always be paired with a :time type but the occurence of :date is unpredictable). I need to process all these so I end up with a collection of structs which each contain a :date :time and :text. Any hint
13:01	jstirrell`	s on how I might go about doing this? I initially tried using a loop but that no longer seems like the way to go
13:04	bortreb	can you give an example?
13:04	nickik	I don't get what you want to do with this data
13:04	nickik	yeah plz
13:06	jstirrell`	shure
13:07	jstirrell`	I'm parsing an html page which has a number of messages on the page
13:07	jstirrell`	I end up with a bunch of hashes, each with a type corresponding to a div on that page
13:08	pdk	hm can you try pastebinning the code with some sample data to run it on that doesn't reveal anything secret about the project
13:08	jstirrell`	sure (nothing's really secret, just trying to make it as easy as possible to explain :)
13:17	jstirrell`	http://pastebin.com/2QhKhuNp
13:17	jstirrell`	ok so that is just the printed seq i'm working with
13:17	jstirrell`	the first represents the date (and time but i don't need the time here)
13:19	jstirrell`	after that the seqs alternate between messege-sender and message-text until the next day is reached
13:19	jstirrell`	I would like to end up with a sequnce of hashes that look like {:date "blah" :time "blah
13:20	jstirrell`	" :text "blah" :sender "blah"}
13:21	jstirrell`	This is my first miserable attempt: http://pastebin.com/HPFUZCc7
13:24	pdk	do you have the input you fed to that code to produce the result you got in the 2nd pastebin jstirrell`
13:25	bortreb	I'm still confused :( it looks like it always goes (time, from, text) or is that not the case?
13:26	jstirrell`	pdk, the first pastebin is what the result of the first binding in the loop looks like
13:27	pdk	hm do you mean it's output or is that what you fed to it in a sequence
13:27	jstirrell`	bortreb, it goes (date, time, from, text, time, from, text, time, from, text ... ,date, time, from, text,
13:28	jstirrell`	that's just the output of another function i used to print the relevent results of the parsed html
13:29	jstirrell`	so yeah that would be what i'm feeding the function I'm trying to create here
13:30	bortreb	can you have two dates in a row?
13:30	jstirrell`	no
13:30	jstirrell`	the dates only show up if there are messages for that date
13:30	jstirrell`	and the messages for a date will be "under" that date
13:31	bortreb	ok
13:31	bortreb	then how about starting off with (partition-by date? your-sequence)
13:32	jstirrell`	yeah actually that makes a lot of sense :)
13:32	bortreb	then you get a sequence of (date not-dates)
13:32	jstirrell`	cool yeah then it should be easy to assoc the rest with that date
13:33	bortreb	oh it doesn't actually do what I thought
13:33	pdk	hmm
13:33	bortreb	,(partition-by even? [2 1 1 1 2 1 1])
13:33	clojurebot	((2) (1 1 1) (2) (1 1))
13:34	bortreb	but still very close
13:34	pdk	is it considered bad form to use let within a doseq if the let binding values are based on the iterator of doseq
13:35	bortreb	,(partition 2 (partition-by even? [2 1 1 1 2 1 1]))
13:35	clojurebot	(((2) (1 1 1)) ((2) (1 1)))
13:35	bortreb	even better
13:35	jstirrell`	sweet yeah i THINK i should be able to figure out something from that, thanks for the help
13:36	bortreb	no problem :)
13:39	raek	jstirrell`: this is an idea I had: http://gist.github.com/495481
13:40	raek	warning: not tested, but compiles
13:40	raek	a more "manual" solution, perhaps
13:41	raek	this keeps "state" in form of parameters
13:57	candera	Can anyone tell me why my catch block in this http://gist.github.com/495545 isn't working?
13:57	candera	I would expect the fn to return nil, but it throws.
13:59	mefesto	i'm not sure _why_ but the NumberFormatException is wrapped in a RuntimeException
13:59	raek	ah, this makes sense...
13:59	mefesto	and the try/catch isn't catching RuntimeException
13:59	raek	map is lazy
14:00	candera	I saw the RuntimeException, but sort of ignored it figuring it to be REPL noise.
14:00	raek	the exception gets thrown after the nfe-test call is done
14:00	rsh	what is the name of that function that takes a seq and a value, and inserts that value between each element of the seq?
14:00	raek	...when the repl forces the lazy-seq to realize
14:00	raek	rsh: interpose
14:00	rsh	thanks
14:00	candera	raek: No, in this case I would think the call to every? would force the seq.
14:00	bortreb	beat me to it
14:01	candera	I get the same results with a doall in there.
14:01	raek	hrm
14:01	raek	the lazy-seq catches the exception anyway
14:02	raek	it doesn't know that it is evaluated in the try-catch
14:02	mefesto	i think fn's need to wrap checked exceptions
14:02	candera	That said, catching RuntimeException does work properly, so good call on that.
14:02	mefesto	including anon fns
14:02	mefesto	because fn's need to be able to be used a Runnables which do not throw checked exceptions
14:02	candera	mefesto: Ah, okay, that sort of makes sense.
14:02	mefesto	... that's my guess anyway
14:02	raek	exceptions plus lazy sequences really don't work well together...
14:04	candera	Thanks!
14:06	jweiss	I'm a little confused about ns. at my repl, if i run (in-ns 'foo) and then at the next repl prompt, type ns to get the current ns, it fails. but if i do ns when the repl first starts, it prints "#<Namespace user>"
14:07	mefesto	jweiss: clojure.core/ns
14:07	jweiss	ahh
14:07	mefesto	when you switched ns it didn't include clojure.core
14:08	jweiss	also, in my code, how do i refer to the namespace that the code is part of?
14:08	raek	jweiss: if you use ns instead of in-ns, it will create the namespace if it doesn't exist
14:08	jweiss	i could refer to it by name, but if i rename the namespace i have to edit in more than 1 place
14:08	jweiss	raek: i think in-ns creates it
14:09	raek	hrm...
14:09	raek	but ns does the refer-clojure part?
14:10	mefesto	raek is right, it'll implicitly refer 'clojure unless otherwise specified
14:11	technomancy	what's the regex character class for "all letters, unicode-aware"?
14:13	Nikelandjelo	Can somebody explain, why does candera's example http://gist.github.com/495545 throw RuntimeException instead of NumberFormatException?
14:14	Nikelandjelo	As I understande it wraps NumberFormatException in RuntimeException. But why?
14:15	raek	technomancy: I think it is \p{L}
14:15	raek	just looking at http://java.sun.com/javase/6/docs/api/java/util/regex/Pattern.html
14:15	raek	L is the unicode class for letters, anyway
14:15	technomancy	raek: thanks!
14:15	technomancy	bummer that \w doesn't just DTRT
14:16	Kaali	Is there a way to load a clojure library dynamically to a swank session? I guess I should modify the classpath somehow?
14:17	raek	a library that was not on the classpath before?
14:18	Kaali	Yes
14:18	Kaali	Just downloaded criterium git repository, and don't really want to add it to my project.clj.
14:19	Kaali	Nor do I want to restart my swank session.
14:19	raek	I know that it is possible to do some ClassLoader magic, but I have never done it
14:19	raek	you have the source?
14:19	Kaali	I noticed that add-classpath is deprecated
14:19	qbg	,(doc add-classpath)
14:19	clojurebot	"([url]); DEPRECATED Adds the url (String or URL object) to the classpath per URLClassLoader.addURL"
14:20	raek	then one possible solution is to eval all the files by hand...
14:20	raek	not very fun to do, though
14:20	Kaali	Yeah, it will be more convenient to restart my session than that ;)
14:20	technomancy	Kaali: the only hack that really works is to put a dir on your classpath and unzip your jars there. but it's annoying; most people just restart.
14:21	raek	yes, what about putting it in your src/ dir temporarily?
14:21	Kaali	raek: That sounds like a workable solution
14:21	raek	then require it and then delete it
14:23	Kaali	Nice and "clean" solution.
14:24	raek	why was add-classpath deprecated anyway?
14:25	raek	it can obviously be useful when doing dynamic development and a new lib has to be added to the classpath
14:25	qbg	It doesn't add it to the system classpath
14:26	qbg	That can cause a few issues IIRC
14:29	rsh	is there a built in case statement in 1.2 that doesn't throw an error when nothing matches?
14:29	nickik	how do i atach a docstring to a (fn ....)
14:30	Nikelandjelo	If any exception is thrown in map function it always throws RuntimeException. Is it specially designed?
14:30	qbg	rsh: case takes a default expression argument
14:31	slyrus	raek: I was bitter when add-classpath was deprecated, but I've learned to live without it. lein swank, for better or worse, seems to do the job well enough for me.
14:33	qbg	nickik: Why do you want a docstring on an anonymous function?
14:33	raek	nickik: docstring usually go on the metadata of the var
14:33	raek	,(meta #'inc)
14:33	clojurebot	{:ns #<Namespace clojure.core>, :name inc, :file "clojure/core.clj", :line 766, :arglists ([x]), :added "1.0", :inline #<core$inc__inliner clojure.core$inc__inliner@d408f0>, :doc "Returns a number one greater than num."}
14:34	raek	,(meta inc)
14:34	clojurebot	{:ns #<Namespace clojure.core>, :name inc, :file "clojure/core.clj", :line 766, :arglists ([x]), :added "1.0", :inline #<core$inc__inliner clojure.core$inc__inliner@d408f0>, :doc "Returns a number one greater than num."}
14:34	raek	in newer versions, fns can have metadata too
14:34	raek	the vars are generally where one would look for it
14:36	nickik	I have a macro that does something like (def NAME (A-FUNCTION (fn .....) other stuff)) and i want a docstring on that
14:36	mefesto	Nikelandjelo: LazySeq wraps any exception in a RuntimeException
14:36	mefesto	Nikelandjelo: http://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/LazySeq.java#L37
14:36	qbg	nickik: Then you put the docstring on the metadata of NAME
14:37	Nikelandjelo	mefesto: I see
14:38	jweiss	what's the diff between (defn ^{:foo :bar} [] :baz) and (defn #^{:foo :bar} [] :baz)
14:38	Nikelandjelo	mefesto: But if I want to catch special exception, I have to write some ugly stuff with retrieveing real exception from RuntimeException and throwing it further?
14:38	raek	nickik: http://github.com/clojure/clojure-contrib/blob/master/src/main/clojure/clojure/contrib/def.clj
14:38	jweiss	looks like the reader macro is different in the docs than when i wrote this metadata
14:38	raek	those are examples of how this has been done before
14:38	qbg	jweiss: The second is deprecated in 1.2
14:38	mefesto	Nikelandjelo: only if it throws a checked exception, i think subclasses of runtime exception will just pass through
14:38	seancron	Can anyone tell me why my agents are not working in http://gist.github.com/495738 ?
14:39	jweiss	qbg: ok so just the ^ is the 'correct' way?
14:39	qbg	^ is the idiomatic way now
14:39	jweiss	k thx
14:39	qbg	It looks nicer too
14:40	nickik	like this (fn ^"BLABLA" ....)
14:40	Nikelandjelo	mefesto: It doesn't work in both case: NullPointerException (unchecked) and IOException (checked)
14:40	Nikelandjelo	mefesto: if I want to catch them
14:41	mefesto	Nikelandjelo: I guess all exceptions then :(
14:51	Nikelandjelo	Is handling exception in java way is idiomatic in clojure. Or it exists only for some kind of compatibility?
14:53	Kaali	There is often a need for me to either transform keys of a map or the values. Am I missing a function here, or is there some kind of an idiomatic way to do it?
14:55	nickik	My macro produces this as a output. How can I add a docstring here? (def cdoubler (with-constraints (fn ([n] (* 2 n))) positiv))
15:01	technomancy	Nikelandjelo: it's idiomatic to use Exceptions, but creating your own Exception subclasses is usually inadvisable.
15:01	technomancy	see clojure.contrib.condition and error-kit for better ways to handle that problem
15:03	Nikelandjelo	technomancy: I'm asking because map is one of the popular functions (imho) and handling exception with map seems to be ugly
15:04	Chousuke	nickik: you'll need to attach the :doc metadata to the cdoubler symbol in your macro
15:04	Chousuke	nickik: using with-meta
15:05	Chousuke	nickik: but that looks a lot like a precondition, are you aware of that feature?
15:05	nickik	im working on the lib to make pre and post conditions usful
15:05	nickik	:)
15:05	nickik	trammel
15:05	Chousuke	I see.
15:06	seancron	Can anyone see why my agent send-off is not working in http://gist.github.com/495738 ?
15:06	nickik	i hoped to avoid the (with-meta )
15:07	cmihai	Hi. I'm having some issues setting up Clojure / SLIME / swank-clojure and it's passing the wrong number of arguments when running running compile-and-load-file. I've understood this problem can be solved with swank-clojure-1.2.1.jar, and connecting manually but I can't find the thing anywhere. All I have is 1.1.0. Any tips?
15:07	Nikelandjelo	seancron: Does it trow exception?
15:07	cmihai	Actually, is there some authoritative documentation on the subject? All I've managed to find so far was umh.. let's just say confusing.
15:07	seancron	Nikelandjelo: Nope. It doesn't change the state at all
15:08	Chousuke	seancron: did you test lookup-dns outside an agent?
15:08	Chousuke	seancron: ie. does it actually work :)
15:08	seancron	Chousuke: Yeah. It worked before with just one host. I'm trying to make it support multiple host lookups
15:08	Nikelandjelo	seancron: Why don't you pass host into send-off?
15:09	Chousuke	Nikelandjelo: the host is the agent's value
15:09	raek	cmihai: the official docs for swank-clojure http://github.com/technomancy/swank-clojure
15:09	raek	swank-clojure.el
15:09	raek	Previous versions of Swank Clojure bundled an Elisp library called swank-clojure.el that provided ways to launch your swank server from within your Emacs process. While swank-clojure is still distributed with the project, it's a much more error-prone way of doing things than the method outlined above.
15:09	Chousuke	seancron: why are you using agents for something like that though? seems a bit overkill to me.
15:10	Nikelandjelo	Chousuke: Oh, sorry :)
15:10	Chousuke	seancron: I mean, the code pattern looks a bit suspicious to me
15:10	Chousuke	seancron: oh, hm, are you sure there is no race in the cache clearing that might be giving you errors?
15:11	seancron	Chousuke: Yeah, I'm new to Clojure and functional programming so it's probably not ideal at all. I'm doing this as a side project to try out Clojure
15:11	seancron	Chousuke: I've tried it with just one host and it doesn't work either
15:13	seancron	Chousuke: If you can think of any other ways to lookup the hosts concurrently I'd be glad to hear them
15:14	Chousuke	well it seems like you could just use futures
15:15	Chousuke	that way you can just look up a host like normal and the user can just deref the future when the result is actually needed
15:16	raek	cmihai: my tip to get slime and swank working is to start swank outside emacs as described in the link
15:16	raek	and the use slime-connect from emacs to connect to it
15:17	raek	beware that there are a lof of outdated tutorials 'round the net
15:17	raek	the getting started guide on clojure's wiki should be up to date too
15:18	seancron	Chousuke: My ultimate goal is to do these lookups every 10 seconds and log the results in a CSV file
15:19	cmihai	raek: I've noticed. I still failed to find swank-clojure-1.2.1.jar, but I'm building the toolkit to build it (hopefully..).
15:19	raek	cmihai: how do you indend to start swank? manually?
15:20	cmihai	Manually, elpa, git builds, some script from the internets.. tried it all :-)
15:20	raek	do you use leiningen or cljr?
15:20	cmihai	Just finished setting up cljr now.
15:21	cmihai	Still haven't gotten into lein yet.
15:21	raek	I have unfortunately never used cljr, but I know how to get it working with leiningen
15:21	raek	you could use it to download the latest version of swank-clojure
15:22	cmihai	Which fork? I got technomancy's git hub, but I'd need to build that :-).
15:22	raek	http://clojars.org/repo/swank-clojure/swank-clojure/1.2.0-SNAPSHOT/swank-clojure-1.2.0-20100308.145053-1.jar
15:22	cmihai	Kind of an issue, since I haven't used lein and such before :-)
15:22	raek	there are jars on clojars
15:23	raek	lein will automatically download the jar files you need
15:23	raek	but you could download that and use it
15:23	seancron	Chousuke: Do you think the problem might be that lookup-dns returns 0 on a successful lookup?
15:23	raek	and then start a repl with "java -cp clojure.jar:clojure-contrib.jar:swank-clojure.jar clojure.main"
15:23	cmihai	Aha, thanks, found the jars :-)
15:24	raek	then you'll have to run something like:
15:24	raek	(ns my-app (:use [swank.swank :as swank]))
15:24	raek	(swank/start-repl)
15:25	raek	then you should be able to connect to it with emacs using slime-connect
15:25	cmihai	Thanks mate :-). I'll give that a try then.
15:25	raek	np.
15:26	Chousuke	seancron: er, right?
15:26	Chousuke	seancron: the return value of the function you send to an agent becomes the agent's new value
15:26	Chousuke	seancron: so the agent's value on a successful lookup would of course be 0
15:27	Chousuke	seancron: if that's what the function returns
15:28	seancron	Chousuke: Yeah. Never mind. I thought returning a 0 might be causing an error.
15:29	Chousuke	seancron: you could try running agent-errors on the agents to see if there are any exceptions thrown in lookup-dns
15:35	seancron	Chousuke: No exceptions. agent-error returns nil
15:39	chouser	this is rather intriguing: http://olabini.com/blog/2010/07/preannouncing-seph/
15:39	chouser	"Seph will steal/has stolen Clojures persistent data structures, all the concurrency primitives and the STM."
15:46	Chousuke	seancron: hmm :/
15:49	seancron	Chousuke: I'm not committed to using agents. Do you think futures is a better choice for this type of parallel dns lookup?
15:54	Chousuke	seancron: well I suppose it depends on what you're doing but in general agents are intended to be a long-lived "identity" that changes its value over time
15:55	Chousuke	seancron: but you seem to be using them as a convenient way to get off-the-main-thread execution, where futures are a better conceptual fit
15:58	cmihai	Sorry, still can't figure it out, with cljr or leiningen (which I can't figure out how to run...)
15:59	cmihai	I'm guessing it needs more stuff in CLASSPATH
15:59	technomancy	cmihai: are you on Windows?
15:59	cmihai	Linux
16:00	technomancy	it's very easy to run Leiningen if you're not on Windows. what problems are you having?
16:00	technomancy	I mean, to just install and run it. It may be tricky to do certain things.
16:01	seancron	Chousuke: Well I want to repeatedly lookup the hosts to see when they're up or down
16:02	cmihai	http://paste.lisp.org/display/112914
16:02	cmihai	Hm.. yeah, looks for 1.2.0
16:02	technomancy	cmihai: did you follow the instructions for self-install?
16:03	technomancy	sorry, I've just never heard of anyone having a hard time installing leiningen unless they were on Windows.
16:03	technomancy	need to take off, but you can email the leiningen mailing list if you hit issues that aren't covered in the readme
16:04	cmihai	K.
16:08	cmihai	Did run self-install though.
16:08	slyrus	anyone around use fnparse?
16:08	cmihai	Aha, the jar files are corrupt
16:08	slyrus	cmihai: are you trying to self-install from the git HEAD?
16:08	jfields	chouser, Chousuke, et al. Do you think using a destructured value in the next destructure is a bad idea? e.g: (let [x (fn [{y :k} {z y}] z)] (println (x {:k :v} {:v :s})))
16:09	cmihai	No, I used the self-install command, but the downloaded jars are full of html :-)
16:10	slyrus	yes, but you used the self-install command from some particular version of leiningen. if that was the head, it won't work.
16:10	cmihai	Aha the jar contains: Octocat is sad That page doesn't exist!
16:10	cmihai	Fuck me.
16:10	slyrus	you need to check out a pre-1.2.1 version, do lein self-install, then I think you can checkout master
16:11	slyrus	there's no jar for 1.2.1 in the repo. I was griping at technomancy about this yesterday. it's a trivial fix.
16:11	chouser	jfields: wow, that's subtle
16:12	chouser	jfields: my first instinct is that it wouldn't work. I see now why it does, but I guess I wouldn't even be sure future implementations of destructuring would support it.
16:12	jfields	chouser, I can actually use that in some prod code, it's exactly what I want, but it seems like it might work by accident.
16:12	chouser	yeah
16:13	chouser	I can see that it could be useful, but we usually think of fn args as binding simultaneously.
16:13	chouser	and you're neatly skirting that little assumption.
16:14	jfields	chouser, yeah, like you I didn't think it would work either, which is why I'm concerned that it wont always. =)
16:14	cmihai	Yeah, sorry, I can't figure this out at all. The more things I fix the more errors come up, and I'm getting dizzy. Maybe another day :-)
16:15	slyrus	cmihai: git checkout 3dc47c1382ae3f05e3ae79267d9d3aa3120b13d8 ; lein self-install
16:15	jfields	chouser, thanks for your input. I guess I'll use it for now. it should be obvious when it stops working, so i guess it's not a risk.
16:16	chouser	heh. ok.
16:16	chouser	I guess personally I wouldn't. It wouldn't be that hard to do the second part in a separate 'let', right?
16:17	technomancy	slyrus: it is documented now at least.
16:18	slyrus	technomancy: ah, good.
16:19	jfields	chouser, the actual prod code is: (defmethod decode :ack [_ {id :id} {order id}] (assoc order :type :ack :to :client))
16:21	jfields	chouser, I could just grab the map in the fn body, but it doesn't seem necessary. Or maybe it is. I can't see anything that's motivating me to go either way. I think the sequential destrucure reads a bit better.
16:22	chouser	(defmethod decode :ack [_ {id :id} ordermap] (assoc (get order id) :type :ack :to :client)) ; would be the "other way"?
16:22	chouser	er
16:22	chouser	(defmethod decode :ack [_ {id :id} ordermap] (assoc (get ordermap id) :type :ack :to :client))
16:22	cmihai	slyrus: Wow, amazing.
16:23	jfields	chouser, yes.
16:23	cmihai	I tried doing the same fix by hand, but failed with the -SNAPSHOT thing btw.
16:23	cmihai	It worked with the older git revision. Thanks a bunch
16:23	slyrus	yw
16:24	cmihai	Now to remember what the hell I installed this for
16:24	cmihai	Installing thee things is like tracing a java error...
16:24	cmihai	Oh, right, getting swank-clojure working.
16:24	cmihai	And that to get slime.
16:26	technomancy	cmihai: so... why didn't you just use the install instructions in the readme? you don't need a checkout at all.
16:26	cmihai	Bloody hell, that was easy :-)
16:26	cmihai	technomancy: I'm pretty sure I did....
16:27	cmihai	I think I must have gotten the wrong lein script at some point.
16:30	cmihai	I personally don't like this auto-magic download stuff to something called .m2, whatever. I tends to fail in unpredictable ways.. Anyway, nevermind, slime-connect works, and I can run the bloody thing from emacs. Mission accomplished. Thanks.
16:38	slyrus	cmihai: I'm with you, man. I'm a big fan of (other than the name) the checkouts directory though!
16:40	tomoj	does that mean you'd rather download the source repo for each dep for a project you want to use (and for each of their deps...) and symlink them into checkouts/ than run `lein deps` ?
16:41	cmihai	Yup.
16:42	slyrus	tomoj: yes
16:42	tomoj	leiningen itself has 27 deps
16:42	tomoj	sounds like fun
16:42	slyrus	tomoj: auto-dependency-chaining leads to things like leiningen having 27 deps! I view that as a bug not a feature..
16:43	cmihai	Gives me better control over what I'm using, and lets me actually understand what I'm doing and why. Like I've said, I didn't actually want leiningen at this point, just to get a IDE for Clojure up and running (emacs + slime). And that proved to be a PITA.
16:44	tomoj	ok, but when you actually want to run someone else's code or publish your code as a library?
16:44	cmihai	And the way it failed (by downloading a .html page to a .jar without any kind of checking) was quite.. troublesome.
16:44	tomoj	that is troublesome
16:45	cmihai	So every time there's a dead URL or even a captive portal
16:45	cmihai	I run the risk of nuking all my jars?
16:45	raek	cmihai: did you try to use the bare swank-clojure jar?
16:45	raek	do get swank running, you really only need that one plus clojure and contrib
16:45	raek	...if you want to do things manually
16:47	cmihai	Tried with cljr swank, it wouldn't start. didn't bother to figure out what main class to load
16:48	raek	if you have the swank jar file, you can start swank by hand
16:48	raek	it's just clojure...
16:49	raek	the main class is clojure.main to start the clojure repl
16:49	cmihai	I mean with swank-clojure
16:49	raek	java -cp 'dir-with-jars/*' clojure.main
16:49	raek	you start it in clojure
16:49	raek	I don't think it has a main class
16:50	cmihai	Oh.
16:50	cmihai	Didn't know that :-)
16:50	raek	(require 'swank.swank) (swank.swank/start-repl)
16:50	raek	it's under the section "embedding" in the swank readme
16:51	raek	which in this case should be read as "starting swank manually"
16:51	raek	the most common way is to start swank with some tool that sets the classpath automatically
16:53	slyrus	cmihai: of course if you follow the path I took, you'll figure all this stuff out, then finally succumb and just start using lein swank (and even lein deps to an extent)
16:57	cmihai	slyrus: yeah, that worked, thanks.
16:59	cmihai	I'll go with that until I figure all this stuff out. Like I said, atm I just want a slimy emacs + basic clojure & contrib, and learn the basics. I'd rather have my environment setup and editor first, then learn the language, then the internals.
16:59	cmihai	Should not be too different from CLISP I guess. Documentation is kind of lacking though. Any books worth getting?
17:05	cmihai	Oh, and maybe a minor question, how can I use it a scripted interpreter? Eg: send it something like clojure '(+ 3 1)'
17:09	raek	java -cp 'yada yada yada' clojure.main -e "(+ 3 1)"
17:10	dnolen	cmihai: raek: that is going to be painfully slow. I highly recommend using cake if you don't want to buy into a particular IDE, or Vim, Emacs. cake uses persistent VMs so it's fast
17:10	dnolen	and supports: cake eval '(println (+ 4 5))'
17:11	dnolen	I'm an Emacs person myself, but cake opens so doors for people who prefer text editors like TextMate
17:13	dnolen	http://github.com/ninjudd/cake
17:13	lancepantz	dnolen: i saw your github tickets, are you using the gem install?
17:13	dnolen	lancepantz: everything is working beautifully now, ninjudd dropped a bunch of patches, 0.3.4 is slick
17:15	lancepantz	dnolen: awesome, its still kinda flaky at times, i'm working on a bunch of tests, but that's just become an excuse to add new features to the test task
17:16	cmihai	I'm an Emacs guy, so it has to be slime. I've got that setup already, and now it works with clojure too. So I'm fine with that. I'll look into cake, thanks.
17:16	lancepantz	cake supports swank as well
17:17	lancepantz	C-c C-k updates the persistent jvm as well
17:17	cmihai	Got a url handy for cake btw?
17:18	dnolen	lancepantz: yeah I can see that there are issues, but I think the ground work is there for getting good Clojure support in simpler environments with cake.
17:18	lancepantz	http://github.com/ninjudd/cake
17:18	cmihai	Ah, emacs-cake not clojure?
17:19	cmihai	Oh. :-)
17:19	dnolen	I'm not going to use it much myself, but I'm thinking about putting a basic TextMate bundle together for people who want a simpler install 1) gem install cake 2) install TextMate Clojure bundle 3) hack
17:20	cmihai	Strange, I grepped github for cake written in clojure and no hits.
17:24	Lajla	ahh, technomaz, I have crossed oceans of time to be with you.
17:30	jweiss	I'm trying to sharpen my FP skills by getting rid of imperative constructs where possible. I have a list of "tests" to run, and a list of "results". My "execute" function needs to go through the list of tests, and build up results. but it's not a simple map function. Each test depends on the entire result set to date. is there a FP way to do this (without loop/recur)?
17:33	gregh	start with a function that takes a result set and a sequence of tests, and runs the first test in the sequence
17:34	gregh	call itself recursively with the new result set, and the rest of the sequence of tests
17:34	gregh	standard initial and termination conditions apply
17:34	jweiss	gregh: ok, that's pretty much what i have now, minor quibble between a recursive fn and loop/recur
17:37	gregh	yeah, it's a pretty fine line
17:38	gregh	clojure provides loop/recur as a limited version of tail recursion just because the jvm doesn't allow the real thing
17:40	jweiss	yeah i was thinking more along the lines of a function like map, where it makes a lazy seq of results
17:40	pdk	,(binding [x 1] x)
17:40	clojurebot	java.lang.Exception: Unable to resolve var: x in this context
17:40	pdk	that is so dumb
17:41	pdk	(doc binding
17:41	clojurebot	EOF while reading
17:41	pdk	(doc binding)
17:41	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."
17:42	pdk	ok whats the workaround
17:42	dnolen	pdk, already existing vars
17:42	pdk	ah heh figures
17:42	jweiss	it probably fails in the init
17:42	pdk	i saw some little footnote on the site that said root bindings were optional and i guess i took it out of context then
17:43	pdk	prob applies to something else
17:51	shoover	is this technically a race condition on loaded-libs since it's dereferenced outside a transaction and then updated later? http://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj#L4757
17:57	technomancy	cmihai: the problem is that curl silently fails on 404s; I thought it would give an error message
17:58	technomancy	cmihai: could you create a bug report?
17:58	technomancy	(btw; self-install is a special case since it has to be implemented in the shell; you'd never see HTML-files-as-jars from a lein deps run)
18:09	lancepantz	is it considered bad form to copy a function from contrib into your src? in the case where that's all the project will ever use from contrib
18:11	lancepantz	i'm playing around with difform, it has contrib 1.1 as a dep all for a single one line function
18:11	technomancy	cmihai: anyway, what I meant about the instructions is that it works better if you download the stable version of the lein script
18:11	lancepantz	so then i end up with contrib 1.1 and 1.2 in as well as a clojure 1.1 jar in my lib
18:12	technomancy	slyrus: I'm not sold on the name of the checkouts dir; open to suggestions
18:12	slyrus	lib-src?
18:16	jweiss	is there a more concise way to express (if x x 0) ?
18:16	jweiss	well that's pretty concise, but more obvious i guess
18:16	cmihai	technomancy: Yeah. I'll dig a bit deeper tomorrow, I'm shutting down for the night now :-).
18:17	technomancy	jweiss: (or x 0)
18:24	neotyk	,((fn [f & {:as options}] (f options)) (fn [& {:as options}] (println options)) :a 1)
18:24	clojurebot	java.lang.IllegalArgumentException: No value supplied for key: {:a 1}
18:25	neotyk	How do one make {:as options} fall through?
18:28	neotyk	in example :a 1 gets converted to map, is there a way to splice it?
18:33	arohner	neotyk: I don't know what you mean by fall through or split it
18:39	slyrus	hmm.. in what interface would I find second?
18:41	neotyk	arohner: ((fn [& {:as a}] (println a)) :key "value")
18:42	neotyk	so :key "value" gets converted to map named a
18:42	neotyk	what if from that fn I would like to call another fn with [& {:as
18:42	neotyk	*** a}] ?
18:43	neotyk	how would I splice a that was converted from :key "value" to
18:43	neotyk	*** {:key "value"} back to :key "value"
18:46	arohner	oh, apply
18:47	arohner	hrm, though that gets weird with maps
18:47	slyrus	or, put another way, what interfaces do I need to support s.t. (let [[x1 x2] my-obj] ...) works?
18:47	slyrus	I thought nth would be enough, but apparently that's not the case
18:48	slyrus	oh, I think I need to support next
18:48	neotyk	,((fn [f & {:as options}] (apply f options)) (fn [{a :a}] (println a)) :a :b)
18:48	clojurebot	nil
18:49	neotyk	would expect :b
18:49	neotyk	sorry, not that example
18:51	neotyk	here it is
18:51	neotyk	,((fn [f & {:as options}] (apply f options)) (fn [& {:as options}] (println options)) :a :b)
18:51	clojurebot	java.lang.IllegalArgumentException: No value supplied for key: [:a :b]
18:53	arohner	,((fn [f & {:as options}] (apply f (flatten (seq options)))) (fn [& {:as options}] (println options)) :a :b)
18:53	clojurebot	{:a :b}
18:53	arohner	since it's a map, you need to flatten before applying
18:53	arohner	if those were seqs/vectors, the flatten wouldn't be necessary
18:53	neotyk	arohner: thank you very much :)
19:22	lancepantz	this is the clojure project i've been working on, if anyone cares. finally got it into production. http://blog.geni.com/2010/07/new-beta-feature-revisions.html
20:09	slyrus	yay: (add-bond (reduce add-atom (make-molecule) [c1 c2]) c1 c2) finally works.
21:03	aldebrn	I sort of wish #"string" yielded a raw string, rather than compiling to a Pattern, so that I could do (format #"<b>%s</b>" bolded-statement), e.g.
21:04	aldebrn	Well, that example was horrible, I meant something involving escapes: (format #"{\em %s}" emph-statement)
21:08	Bahman	Hi all!
21:20	eckroth	is there some advantage to using (fn) over #() ?
21:21	rhudson	I'd say the longer the function, the more appropriate fn is
21:21	eckroth	rhudson: sure, because of the % issue
21:21	eckroth	rhudson: but is (fn [_] (blah)) better than #(blah) ?
21:22	rhudson	also, nested anonymous functions
21:22	eckroth	rhudson: like, in how its executed? performance difference? debugging issues?
21:23	rhudson	The reader translates the #() form into the fn form, so they run identically
21:23	eckroth	rhudson: ah ok
21:23	rhudson	#(blah) is better than (fn [] (blah))
21:24	eckroth	rhudson: I see in rhickey's ant code that he used (fn [_] (blah)) http://clojure.googlegroups.com/web/ants.clj
21:24	eckroth	rhudson: though perhaps that's no longer idiomatic
21:25	rhudson	Note that (fn [_] blah) is a function that takes one argument that's ignored; #(blah) is 0-argument
21:25	eckroth	rhudson: but #(blah %) is 1-argument? so it checks inside and counts % ?
21:26	rhudson	right
21:26	rhudson	#(blah %1 %2) is a 2-arg function
21:26	eckroth	rhudson: as is #(blah %2) I suppose
21:26	eckroth	rhudson: 2-arg that is
21:27	rhudson	I would guess so; dunno
21:27	eckroth	,(#(print %2) 1)
21:27	clojurebot	java.lang.IllegalArgumentException: Wrong number of args (1) passed to: sandbox$eval500439$fn
21:28	eckroth	,(#(print %2) 1 11)
21:28	clojurebot	11
21:28	rhudson	hah
22:16	lancepantz	anyone know what i could have done to aquamacs that would make M-s print a beta?
22:19	lancepantz	well, (setq mac-option-modifier 'meta) fixed it
22:57	tomoj	lancepantz: was it a ß?
22:57	lancepantz	yep
22:58	lancepantz	don't know how it got unbound, bizzare
22:58	tomoj	that's just mac's default thing
22:58	tomoj	option for extra characters
22:58	tomoj	oh you mean the variable, dunno
22:58	lancepantz	yeah
23:18	cais2002	hi guys, did any of you encounter a StackOverflowError with latest 1.2.0-master-20100727.210144-91? at clojure.lang.Keyword.intern(Keyword.java:39)
23:19	cais2002	it does not happen for 1.2.0-beta1
23:37	daaku	i've been searching for a bit, but can't seem to find any code coverage libraries, anyone know if one exists?
23:38	lancepantz	daaku: i don't believe so
23:38	daaku	lancepantz: cool, thanks
23:39	lancepantz	daaku: i was looking at something, i think it may have been swank or clojure-test-mode that basically assumed that tests for the foo ns were going to be in test_foo
23:40	daaku	lancepantz: i don't get how that would translate to code coverage info
23:41	lancepantz	it just made me assume that there wasn't a code coverage library
23:44	scottj	Is there a version of -> that with more than two args isn't defined in terms of itself?
23:46	scottj	and can you monkey patch functions? :) like add a new arity function to an existing one from core?
23:48	tomoj	you can, but you shouldn't
23:53	ttmrichter	There's nothing wrong with monkey-patching that a good caning wouldn't solve.