#clojure – 2010-06-20

2010-06-20

00:47	defn	trptcolin: thanks
00:48	trptcolin	np
00:48	defn	#question: How can I split a string at the occurrence of a character?
00:48	defn	for instance: "foo," => "foo" ","
00:54	technomancy	,(seq (.split "hey,there" ","))
00:54	clojurebot	("hey" "there")
00:54	technomancy	it gets rid of the seporator
00:55	defn	yeah, i want to keep the separator
00:55	technomancy	could use interpose
00:55	defn	oh yeah! thanks
00:56	technomancy	sure
00:56	defn	err damn, still not gonna do it for me im afraid
00:56	defn	I need to have something that will go across: ["foo" "bar," "baz!"]
00:57	defn	and give me ["foo", "bar", ",", "baz", "!"]
00:57	DarthShrine	defn: re-partition?
00:57	defn	you guys are saints
00:57	defn	thanks
01:10	defn	trying to write me first markov :X
01:10	defn	s/me/my
01:10	defn	$s/me/my
01:10	sexpbot	Command not found. No entiendo lo que estás diciendo.
01:11	DarthShrine	Hah :)
01:11	defn	I'm probably going about it completely wrong
01:12	defn	for instance using str-utils and company when I should probably be composining words from groups of chars
01:12	defn	this thing will tank on any sufficiently large input
01:17	defn	bah im doing this all wrong
01:43	defn	ahh, there it is
01:47	DarthShrine	What is where now?
01:47	defn	heh, just saying "ahhh, now i see what i was doing wrong..."
01:47	defn	My First Markov(tm)
02:52	DarthShrine	You are.
04:06	LauJensen	Morning all
04:07	DarthShrine	Morning LauJensen
04:07	LauJensen	DarthShrine, welcome to Clojure :)
04:07	DarthShrine	Thanks :)
04:29	Moominpapa	Still wrestling with labrepl on Windows.
04:29	Moominpapa	I've managed to get to the following command line:
04:29	Moominpapa	http://pastebin.com/kwus6Vdi
04:29	Moominpapa	Which at least boots.
04:29	Moominpapa	But when I run it, I get:
04:29	Moominpapa	user=> (require 'labrepl)
04:29	Moominpapa	WARNING: spit already refers to: #'clojure.core/spit in namespace: compojure.enc
04:29	Moominpapa	odings, being replaced by: #'clojure.contrib.duck-streams/spit
04:29	Moominpapa	WARNING: spit already refers to: #'clojure.core/spit in namespace: compojure.htt
04:29	Moominpapa	p.helpers, being replaced by: #'clojure.contrib.duck-streams/spit
04:29	Moominpapa	WARNING: spit already refers to: #'clojure.core/spit in namespace: compojure.htt
04:29	Moominpapa	p.request, being replaced by: #'clojure.contrib.duck-streams/spit
04:29	Moominpapa	java.io.FileNotFoundException: Could not locate clojure/string__init.class or cl
04:29	Moominpapa	ojure/string.clj on classpath: (util.clj:1)
04:30	Moominpapa	The warnings don't both me. The absence of a string class does... :)
04:41	Chousuke	you probably need to use 1.1 of Contrib and Clojure
04:50	Moominpapa	Sadly, that doesn't work for other reasons...
04:51	Moominpapa	Equally, IntelliJ gets further, but then it turns out it's destroyed the windows environment variables so can't start the web server.
04:52	LauJensen	Ah I remember when I was a young pup, attempting to be serious on Windows... :)
04:52	Moominpapa	lol :)
04:54	DarthShrine	Heh :)
05:13	vIkSiT	hello all
05:13	vIkSiT	hey Chousuke
05:13	vIkSiT	around?
06:01	DarthShrine	Hmm, lein repl is being crazy slow o.o
06:03	LauJensen	DarthShrine: I recently heard of a bug being ironed out in lein repl- Ive never used it myself
06:03	DarthShrine	LauJensen: Ah, thanks.
06:04	DarthShrine	The repl is doing stuff like hanging on (doc foo)
06:07	LauJensen	You could clone the lein repo and build it yourself, though I always just run such projects via M-x swank-clojure-project - never had any bugs or breakages that way
06:08	DarthShrine	I'm not an emacser.
06:10	LauJensen	Ok - You could become one in a few minutes though if you want - I have a few blogposts on getting up I think
06:12	LauJensen	DarthShrine: Or check this out http://www.assembla.com/wiki/show/clojure/Getting_Started
06:12	LauJensen	There are guide for all IDEs
06:12	LauJensen	s/guide/guides/
06:13	DarthShrine	Yeah, I have a vim + screen setup on another computer. Wanted to try lein so I didn't have to install Clojure manually.
07:20	ragnard	Hello folks
07:21	ragnard	Question: I have two vecs, one with functions, one with their arguments. How do I apply the list of functions to the list of arguments in the most functional manner?
07:21	ragnard	ie: [identity inc] and [1 1] would give [1 2]
07:22	hoeck	,(map #(%1 %2) [identity inc] [1 1])
07:22	clojurebot	(1 2)
07:23	ragnard	hoeck: Thank you. Very simple, of course... :)
07:24	hoeck	ragnard: thanks to clojure for being so simple :)
07:33	AWizzArd	,(.getBytes "0;0;abcde")
07:33	clojurebot	#<byte[] [B@ff8839>
07:33	AWizzArd	,(vec (.getBytes "0;0;abcde"))
07:33	clojurebot	[48 59 48 59 97 98 99 100 101]
07:34	AWizzArd	,(vec (.getBytes "0;0;abcde" "LATIN1"))
07:34	clojurebot	[48 59 48 59 97 98 99 100 101]
07:34	AWizzArd	,(vec (.getBytes "0;0;äöü" "UTF-8"))
07:34	clojurebot	[48 59 48 59 -61 -92 -61 -74 -61 -68]
07:34	AWizzArd	,(vec (.getBytes "0;0;äöü" "LATIN1"))
07:34	clojurebot	[48 59 48 59 -28 -10 -4]
07:35	LauJensen	AWizzArd: Just in case you didnt know, the same works in a query with clojurebot
07:35	AWizzArd	indeed, I did not know this
07:35	AWizzArd	thx
07:35	AWizzArd	But in this specific case I wanted to show these results to someone else ;)
07:36	LauJensen	Sure - Its not causing any problems when there's no chatter and I personally enjoy seeing other peoples experiments as well :)
07:37	AWizzArd	The thing is that it seems that such very small strings eat 50 bytes in memory or so
07:37	LauJensen	yea, Java spends 2 bytes per 1 byte of data, keeping charset info
07:38	LauJensen	I hit that wall when I did the Global Warming post, because on a 350Mb file, it would hog 700+Mb memory
07:38	AWizzArd	sigh
07:39	AWizzArd	Well, one can do in-memory-compression of strings by not storing the strings but instead their (.getBytes s "LATIN1") representation
07:39	LauJensen	Yea thats a very simple way to work around it
07:39	AWizzArd	I am thinking about this because I would like to store nearly 2,5 million texts in ram :-)
07:40	LauJensen	hehe
07:40	AWizzArd	this "trick" already got me down from about 11 GB to +/- 4 or so
08:09	LauJensen	AWizzArd: Would be crazy if you could get it down to -4 GB :)
08:15	AWizzArd	That would be shockingly crazy.
08:21	LauJensen	if you could compress 11 GB into a negative number of Gigabytes - You said +/- 4 Gb... I should have known better than to attempt humor with a German
08:28	Fossi	well, in german, you say "plus/minus" for "about"
08:28	LauJensen	AWizzArd: Oops, in my rush I read 'that would' as 'what would' :)
08:28	LauJensen	Fossi: Yea, its the same in Danish actually
08:31	Joreji	Anyone here knows of a fnparse mailing list?
08:36	Licenser	I think our aproach at the whole number thing might be wrong, we should try to get not speed or correctness as default but speed AND correctness as default
08:38	LauJensen	Joreji: Not that Im aware of
08:44	AWizzArd	Joreji: please have a look into your private chat windows
09:08	Joreji	LauJensen: Hmm thanks. I'll look for an email or something like that.
09:24	wlr	Licenser: I refer you to the paragraph beginning "I want it to be perfectly clear..." in http://groups.google.com/group/clojure/msg/6e987f49d54db3d4
09:25	Licenser	wlr: I know
09:56	candera	Happy Fathers Day to those in countries where it's celebrated today!
14:07	Moominpapa	'(->> (java.lang.System/getProperty "java.class.path") (re-seq #"[^;]+") (map println) dorun)
14:15	LauJensen	Moominpapa: Doesnt look much different w/w/o the regex
14:17	Moominpapa	Hmm... I was expecting that to do more :)
14:17	Moominpapa	I was curious.
14:17	LauJensen	like a monkey
14:17	LauJensen	:)
14:17	LauJensen	Sorry, you just reminded me of a song I heard long ago, "Curious George" I think
14:17	Moominpapa	Curiosity killed the cat, but it's usually regarded as a positive trait in coders ;)
14:18	LauJensen	$(-> (System/getProperty "java.class.path") (.split ":") (->> (map println)))
14:18	sexpbot	java.lang.SecurityException: Code did not pass sandbox guidelines: ()
14:18	LauJensen	,(-> (System/getProperty "java.class.path") (.split ":") (->> (map println)))
14:18	clojurebot	(nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil)
14:18	Moominpapa	I finally got labrepl working, with the assistance of that incantation.
14:23	Moominpapa	I gather clojurebot doesn't redirect prn then :)
14:23	Moominpapa	,(seq (.split (System/getProperty "java.class.path") ";"))
14:23	clojurebot	("lib/maven-artifact-2.0.10.jar:lib/pircbot-1.4.2.jar:lib/ant-launcher-1.6.2.jar:lib/wagon-http-lightweight-1.0-beta-2.jar:lib/smackx-3.0.4.jar:lib/wagon-file-1.0-beta-2.jar:lib/maven-settings-2.0.10.jar:lib/jtidy-4aug2000r7-dev.jar:lib/xml-apis-1.0.b2.jar:lib/postgresql-8.2-504.jdbc4.jar:lib/lein-swank-1.0.0-20091121.091400-1.jar:lib/plexus-interpolation-1.1.jar:lib/maven-artifact-manager-2.0.10.jar:lib/clojure-json-1.1-2
14:30	Blackfoot	is there something like eval that uses the current context to resolve symbols?
14:32	LauJensen	Blackfoot: Not sure, but its not a difficult macro to write out yourself
14:33	Blackfoot	LauJensen: i see. actually, this is for a macro. i want to both print out a sequence of forms and show the result of evaluating each
14:34	Blackfoot	but running (eval) on the form does not resolve the symbols in it
14:34	LauJensen	Blackfoot: try working out from something like this
14:34	LauJensen	(defmacro locals [] (vec (mapcat (fn [k] [(list 'quote k) k]) (keys &env))))
14:34	LauJensen	(let [x 5 y 10] (locals))
14:35	LauJensen	I have to duck out
14:35	Blackfoot	ok, thanks
15:02	revertTS	so I'm considering pre-ordering Joy of Clojure; anyone read the chapters available? recommended/not recommended?
15:07	Licenser	revertTS: I read some of them and I find it a very good book
15:13	revertTS	Licenser: would you say there's much content for people very familiar with FP and STM, but less so with the JVM and some Lisp family features (eg. macros)?
15:14	Licenser	revertTS: since I was or am neither a person who falls in the category of a JVM expert nor a Lisp nor a STM expert, I can't say I found it nice to read from what I've read by now
15:19	Raynes	revertTS: The book seems to address pretty much everything.
15:56	mcav	if anyone from Clojars is here, I accidentally created a group "com.clojars.mcav" (instead of org.clojars.mcav); that can be deleted, sorry about that
15:59	technomancy	there's only one guy from clojars, and he hasn't been here in months. =(
18:19	Licenser	Okay a poll: How many of you have seen an iPad in the wield (in a store as an example is not counting, I mean in the street in real use)
18:19	revertTS	I've seen 3ish
18:24	seancorfield	Licenser: i've seen several, all but one used by consumers rather than techies
18:25	seancorfield	mostly used for reading books / magazines (primarily) with some email / web browsing
18:25	seancorfield	the techie used it primarily for email / browsing with note taking (via Pages)
18:26	Licenser	seancorfield: you know you're the second person that actually caimed he saw them :P that is carry
18:26	Licenser	I say they doN#t really exist!
18:26	hanDerPeder	seancorfield: how long does it take you to identify a person as a techie?
18:27	revertTS	the people I've seen with them would qualify as 'techies', I guess; CS profs and grad students
18:31	seancorfield	the ppl i've seen have been mostly retired dads who otherwise hardly use a computer
18:31	seancorfield	the techie was at a user group so that was easy :)
21:38	seths	so I've read through http://clojure.org/datatypes but am still confused on something simple:
21:38	seths	how do I access the value of a field defined via deftype?
21:38	seths	defrecord I get, works fine, but
21:38	seths	,(deftype Foo [bar])
21:38	clojurebot	sandbox.Foo
21:38	seths	,(:bar (Foo. 123))
21:38	clojurebot	nil
21:43	seths	(get (Foo. 123 :bar))
21:43	seths	er
21:43	seths	,(get (Foo. 123 :bar))
21:43	clojurebot	java.lang.IllegalArgumentException: No matching ctor found for class sandbox.Foo
21:43	seths	durrrr
21:43	seths	,(get (Foo. 123) :bar)
21:43	clojurebot	nil
23:43	mae	haha
23:43	mae	fucking awesome nick dude
23:44	mae	OK
23:44	mae	You may call me a mad scientist if you like
23:44	mae	but I have a BATTLE CRY:
23:45	mae	"port javac to clojure" ! ! !
23:45	LeNsTR	oO
23:45	mae	1. What would it take (in terms of lines of code).
23:45	mae	2. What libraries would we have to port to pure clojure for low level shit that is currently written in java?
23:46	mae	2a. If we need to write more low level java shit then rhickey may need to expand the "clojure the language" in terms of low level jvm capability.
23:47	mae	Answer 1, 2, and 2a in LOC.
23:47	mae	[ legend: LOC = lines of code ]
23:48	mae	HA HA HA, if we do this, then does that mean that we are basically running clojure directly on top of the hotspot vm without any extra fat? Just THINK OF THE POWER OMGS!
23:48	mae	3. Would we need to write clojure libraries to support all the fancy ass 6.0 features for I/O like NIO/NIO2/Channels or Handles? Java badasses chime in here please?
23:50	mae	4. Referencing the HA HA HA: please disregard this as it was a stupid-assed declaration and I will take my punishment... later.
23:50	mae	5. Is it always this quiet?
23:50	mae	6. BBL
23:53	mae	7. P.S. Feedback welcome, should I take this to the mailing list????