#clojure – 2011-08-26

2011-08-26

00:08	gstamp	is there any way to pass JVM arguments to the lein swank subprocess? I'm trying to setup profiling
01:11	technomancy	gstamp: :jvm-opts in project.clj
01:19	polypus74	trying out clj-redis. there is no select command available, anybody know anything about it?
01:22	gstamp	technomancy: it seemed like those options were not being passed down to the JVM spawned by lein-swank
01:24	amalloy	polypus74: aleph-redis surely supports select
01:25	duck1123	yeah, Aleph's redis support has all the commands
01:27	amalloy	at least in the sense that it has none of them, and will happily send any old junk. the protocol is self-documented enough that aleph can parse the right "answer" without knowing what the command means
01:27	technomancy	gstamp: just confirmed it works here
01:28	polypus74	amalloy: ty, i'll have a look, although i just read that having > 1 db is discouraged and may even be deprecated, so i may go another route
01:28	technomancy	gstamp: it should be a vector of strings
01:29	duck1123	polypus74: Where did you hear that? If anything, I've been hearing more and more about people clustering redis
01:29	polypus74	not more than one instance, more than one indexable db, which is different
01:30	gstamp	technomany: okay, strange. that's what I've I'm using. I'll double check
01:32	polypus74	duck1123: https://github.com/xetorthio/jedis/issues/85, fourth comment from bottom
01:33	amalloy	polypus74: deprecated on jedis, maybe, but i don't see anyone saying you shouldn't do it with redis in general
01:51	gstamp	technomancy: Looks like I was mistaken. It seems to work fine. Sorry about that.
01:52	scottj	amalloy: where's your utils repo ago?
01:52	scottj	again
01:52	amalloy	scottj: github.com/amalloy/amalloy-utils - but most of it's been absorbed into ninjudd's useful
01:52	amalloy	github.com/flatland/useful
01:55	scottj	amalloy: ty
02:14	ibdknox	for those following along, I updated the pinot readme with all sorts of goodness, including the visualization stuff:
02:14	ibdknox	https://github.com/ibdknox/pinot
02:17	amalloy	scottj: just for my vanity, what function were you looking for in amalloy-utils?
02:18	ibdknox	amalloy: the one that spits out my entire program... I can't seem to find it in there though.
02:18	amalloy	ibdknox: lazy-loop is usually pretty close, in my experience
02:19	ibdknox	haha
02:21	scottj	amalloy: actually I misremembered I was looking for readable dates
02:25	amalloy	ah, excellent. now i'll be moderately humble for at least a week or two
02:27	scottj	anyone else keep a directory of clojure project they don't use around just for grepping through when wondering about an idiom or util?
06:41	marms	hi
06:41	marms	if I use gen-class to extend a Java class, is it possible to access private fields of the super class ?
06:43	marms	oh dear I just discovered the exposes-method arg
06:43	marms	nevermind
06:47	tsdh	Why does (let [^java.awt.Image i (java.awt.image.BufferedImage. 10 10 java.awt.image.BufferedImage/TYPE_INT_RGB)] (.getHeight i)) give a warning that getHeight cannot be resolved? BufferedImage is a subclass of Image...
06:50	tsdh	And, yes, I know that I can omit the hint in the example. My real use is something is (let [^java.awt.Image (.getImage myImageIcon)] (.getHeight i)).
06:54	tsdh	And how do I import a nested class in a ns? :import (foo.bar Baz.InnerBaz) doesn't do the trick...
06:56	tsdh	Ah, Baz$InnerBaz. :-)
06:56	khaliG	hm i'd like to launch fleetdb at the start of my clojure app. is there a nice way to do this?
07:35	McOmghall	could someone provide info on constructing a lazy string from a reader without using line-seq?
07:36	McOmghall	that function seems to fail when I use it for composing a huge webpage from URL
08:07	McOmghall	noone?
08:08	raek	McOmghall: how does it fail?
08:09	McOmghall	raek: java.lang.RuntimeException: java.lang.ClassCastException: java.lang.String cannot be cast to clojure.lang.IFn (repl-1:2)
08:10	McOmghall	with this code:
08:10	McOmghall	(defn fetch-url [url]
08:10	McOmghall	"Retrieves the web page specified by the url."
08:10	McOmghall	(with-open [the-stream (.openStream (java.net.URL. url))]
08:10	McOmghall	(let [reader (new BufferedReader (new InputStreamReader the-stream))]
08:10	McOmghall	(repeatedly (str (.read reader))))))
08:10	McOmghall	when I try to take the ``first'' or any seq operator on the result
08:11	raek	there are multiple things I would like to comment on:
08:11	raek	repeatedly takes a function, so you need to write something like (repeatedly #(str (.read reader)))
08:12	raek	repeatedly is lazy, so the .read calls will happen outside the scope of with-open
08:12	raek	that can be solved by wrapping the repeatedly call with doall
08:13	raek	a lot of the code can be simplified by using clojure.java.io
08:13	raek	(with-open [reader (io/reader (io/to-url url))] ...)
08:14	raek	but one inmportant question is what unit of data do you want to read? lines? bytes?
08:14	raek	characters?
08:15	McOmghall	it must be bytes or characters because of 2 reasons
08:16	McOmghall	the web page I try to fetch is very big, so a line analysis is not really adequate
08:16	McOmghall	and I am writing a parser for it, so it is more easily done with a character stream
08:18	McOmghall	line-seq doesn't work because, I think, the page lasts too much on being loaded
08:19	raek	anyway, if you want a lazy sequence of characters of the stream, I recommend something like (defn char-seq [reader] (lazy-seq (let [x (.read reader)] (when-not (neg? x) (cons (char x) (char-seq reader))))))
08:20	McOmghall	ok, thanks raek
08:20	raek	(defn do-stuff [url] (with-open [reader (-> url io/to-url io/reader)] (do-stuff-with-lazy-seq (char-seq reader))))
08:20	McOmghall	i'll try that
08:21	raek	laziness and with-open does not really mix well, so I believe that trying to encapsulate them together is not going to work
08:22	raek	what do you mean by "lasts too much on being loaded"?
08:22	raek	char-seq does pretty much what line-seq does, but with .read instead of .readLine
08:22	McOmghall	i've worked a previous version with line-seq and printed the results
08:23	mprentice	c.c.zip-filter.xml/xml-> is a function, not a macro like ->. that threw me off for a while.
08:23	McOmghall	the last element of the sequence was not the last element of the page
08:24	McOmghall	so I thought it was because it was not fully loaded when the lazy sequence was created
08:24	raek	was the page chopped off at the end?
08:24	McOmghall	yes
08:24	raek	it might be possible that the server closed the connection before the client consumed the whole thing
08:25	raek	McOmghall: does wrapping the line-seq call in a doall make any difference?
08:25	raek	(warning: that will load the whole page into memory)
08:27	raek	McOmghall: I think you shoould investigate exactly where the problem is before abandoning line-seq and/or laziness.
08:27	McOmghall	yeah, I need lazyness because the page is too big to have a copy in-memory
08:28	raek	(also: if the server closes the connection before reaching the end of the file, I would expect something to throw an exception)
08:28	raek	so to repeat: gather more information on what actually happens
08:30	McOmghall	thank you, this was useful
08:30	McOmghall	i'll investigate
08:41	timvisher	hey all
08:41	timvisher	does anyone know how to make ring send utf-8 encoded documents?
08:42	timvisher	i.e. setting the Content-Type on the response?
08:44	raek	timvisher: ring will send the data encoded in UTF-8, but you have to include a Content-Type header with the charset parameter set to UTF-8
08:45	raek	{:status 200, :headers {"Content-Type" "text/html; charset=UTF-8"}, :body "<blink>Hello Web!</blink>"}
08:45	timvisher	raek: I'm trying to avoid having to create a response map every time
08:45	timvisher	but that is certainly an option. :)
08:45	timvisher	ring.middleware.content-type
08:45	timvisher	also found that
08:45	raek	timvisher: what do you mean? in ring you always have an response map
08:45	raek	yes, you can use function to factor out common code, as usual... :-)
08:46	timvisher	i'm sorry, i'm using ring through compojure
08:46	timvisher	compojure at least guesses a good response map from your data
08:46	timvisher	or you can return one manually
08:46	timvisher	true true re using a function
08:46	raek	I usually make a html-response function that takes a body and returns the map the way I want it
08:48	timvisher	do you use compojure?
08:48	raek	I prefer Moustache myself, but I have used compojure too
08:50	raek	with moustache I tend to write each handler as a separate defn and then use the moustache app macro to dispatch them
08:54	timvisher	thanks for the pointer
08:54	timvisher	that works, even if it's not exactly what I was hoping for
08:54	timvisher	thanks
08:55	robbe-	How should I interpret errors like
08:55	robbe-	java.lang.NullPointerException (NO_SOURCE_FILE:0)
08:56	robbe-	When the file loaded allright, it seems.
09:17	dnolen	robbe-: it almost always mean the file did not load right.
09:19	robbe-	Wel, it did. :-)
09:19	robbe-	Error goes away if I uncomment the line causing the error.
09:42	robbe-	I've traced it back to (.hashCode nil) by the way.
09:43	raek	robbe-: if you call (require 'your-ns :reload), do you get an exception directly, or only when you call something from that namespace?
09:50	robbe-	Only when I called the function, ultimately to calling what I described above.
09:51	robbe-	I suppose the answer to my original question is "generally, you're probably doing something with nil while you shouldn't - or file didn't properly load." - At least that's how I interpret it now.
09:51	dnolen	robbe-: sorry it wasn't clear to me when the error was happening, or what you mean by the "file loaded". yes, null pointer exceptions don't give line numbers.
09:51	dnolen	not sure why.
09:52	robbe-	It wasn't all really clear for me either, leading me to asking rather unclear questions probably. ;-)
09:53	dnolen	robbe-: actually that's not true, they do give line numbers, but not if the code error happens during compilation.
09:56	robbe-	That's odd, it was during runtime and I didn't get a line number.
09:56	robbe-	Furtermore, that line was executed once, before being executed with nil.
09:57	robbe-	Furthermore*
10:03	raek	robbe-: but you should be able to see the line number of the function where it happens in the stack trace, right?
10:03	robbe-	There's no stack trace.
10:04	raek	robbe-: what do you mean? are you using an IDE or a bare REPL in a terminal?
10:04	robbe-	http://pastebin.com/CBxCGSdB
10:05	raek	robbe-: call (.printStackTrace *e) to get the stack trace in a bare REPL
10:06	robbe-	Ah, now that's a good one to know.
10:06	robbe-	I was hating clojure for throwing me errors and not saying where they come from.
10:06	robbe-	:)
10:07	robbe-	Also (completely unrelated) there seems to be somthing wrong with my awk print command there. :P
10:09	raek	yeah, the bare REPL is a bit akward to develop in...
10:09	robbe-	(There, forgot that $ has to be escaped in the makefile.)
10:10	robbe-	Any recommended IDEs for Clojure for a vim enthousiast?
10:10	robbe-	I also irrationally hate eclipse.
10:10	robbe-	Just saying.
10:10	robbe-	:P
10:11	gtrak	emacs
10:11	MasseR	robbe-: vim
10:11	gtrak	there's a vimclojure
10:11	tsdh	I'm toying around with chouser's lazy qsort for The Joy of Clojure, but using it, I get an StackOverflowError. http://pastebin.com/MxrBHRRx
10:11	MasseR	And slimv
10:11	robbe-	Well, I still have the bare REPL thing to fight with then. :P
10:12	raek	I know that people are using vim for clojure dev, and that there exists something similar to what slime/swank does in emacs, but not much more than that
10:12	MasseR	robbe-: slimv handles that for you (in theory)
10:12	MasseR	I use it mainly for paredit
10:12	tsdh	Could someone check if it works with clojure 1.2? (I'm using a 1.3 snapshot...)
10:12	robbe-	I'll google slimv then. Thanks for the tip.
10:13	gtrak	is there a decent guide to refactoring? moving function defs around, etc..?
10:15	coopernurse	robbe-: I always suggest IntelliJ. zero tooling issues since I switched to it from slime
10:16	gtrak	does intellij do good leiningen integration
10:17	sjl	robbe-: I use SLIMV with a few files from VimClojure and rarely deal with the REPL
10:17	sjl	robbe-: I mostly use <localleader>ee to just veal the top-level form I'm in. Quick and painless.
10:18	sjl	*eval
10:26	zoldar	hello, I have a java interop problem. I'm defining a bunch or records based on interfaces defined in java. After compilation record's methods have proper type hints in java IDE. However, constructor still has Object arg0, Object arg*.. as arguments - is there any way to expose type hints for java env? Or is some sort of factory interface the only way to go ?
10:27	gtrak`	Object arg0 etc.. is not a typing issue, eclipse uses the source of the interfaces to name the args, you'd have to output source code for it to know what to do
10:27	gtrak`	maybe the 'Object' part is a typing issue
10:30	zoldar	gtrak`, so, how could I expose that information to eclipse/other java ide?
10:30	st3fan	how would i translate python's if foo in ('cheese', 'bacon') to clojure?
10:30	gtrak`	some kind of plugin that uses a clojure AST
10:30	st3fan	i now have (if (or (= ..) (= ...))) but i an wondering if there is a shortcut
10:30	sjl	st3fan: (if (#{"cheese" "bacon"} foo) …)
10:31	st3fan	hm nice
10:31	sjl	st3fan: Yeah, Clojure Sets are functions too.
10:31	manutter	,(let [foo "cheese"] (if (#{"cheese" "bacon"} foo) :contains-fat :fat-free)
10:31	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.lang.RuntimeException: EOF while reading>
10:31	manutter	,(let [foo "cheese"] (if (#{"cheese" "bacon"} foo) :contains-fat :fat-free))
10:31	clojurebot	:contains-fat
10:32	zoldar	gtrak`, a plugin for IDE? I guess I will stick to some kind of factory then...
10:32	gtrak`	zoldar, or maybe the opposite, write some clojure that outputs java source for ide's to pick up
10:33	gtrak`	or just forget java
10:33	gtrak`	;-)
10:33	zoldar	gtrak`, not an option unfortunately
10:33	zoldar	but thanks for pointers anyway
10:35	gtrak`	private constructor and a factory method solves the problem? then that's easiest
10:45	zoldar	gtrak`, but you intrigued me with clojure writing java - do you mean that I would explicitly output some java source code to files which would be later compiled?
10:45	gtrak`	you could, yea, say with stringtemplate or something
10:46	zoldar	that's an idea..
10:46	gtrak`	just another layer of abstraction
10:47	gtrak`	but there might be a simpler way, I haven't had to deal with that stuff really
11:11	irrumator_	anyone work with kawa (a scheme on the jvm) here before? can you compare it to clojure?
11:12	irrumator_	kawa: http://www.gnu.org/s/kawa/
11:13	duck1123	Ok, I've never really figured this part out. What do I need to do if c.t.logging isn't showing the right namespace?
11:14	duck1123	I have one project where it's working right, but then another where all I get is clojure.tools.logging$eval129$fn__130
11:33	stuartsierra	duck1123: It's probably an issue of when c.t.logging is resolving ns, e.g. at macroexpansion time.
11:36	upwardindex	Is there some kind of style guide for clojure code?
11:37	triyo_	I have cljs code spread over multiple modules. When I run a cljs.closure/build I get a `nth not supported on this type: PersistentArrayMap`. If I move all the code `as is` in to a single module, all works fine. Seems strange
11:37	manutter	triyo_: sounds like a syntax error in a :use or :require clause
11:39	duck1123	stuartsierra: would that be because I have a macro that does logging? If I moved the logging call to an internal fn, would that fix this?
11:39	stuartsierra	possible
11:40	triyo_	manutter: hmm, doesn't seem like it. (ns blog.validation.form (:require [blog.validation.preds :as preds] [blog.validation.core :as core]))
11:40	stuartsierra	A macro probably shouldn't log directly, though it may expand to code which does logging.
11:40	duck1123	that's what I meant
11:41	triyo_	If I remove the `:require` though, all works
11:41	triyo_	so one would think its a syntax error, but it seems well formed.
11:42	manutter	triyo_: try extra square brackets around the whole list: (:require[[blog.validation.preds :as preds][blog.validation.core :as core]]))
11:42	duck1123	I have a "spy" macro that logs the code and pprints the data https://github.com/duck1123/ciste/blob/master/src/main/clojure/ciste/debug.clj
11:42	triyo_	manutter: Assert failed: Only [lib.ns :as alias] form supported (and alias (= :as as))
11:43	manutter	triyo_: hmm, never mind then :/
11:43	triyo_	manutter: this is clojure script btw
11:43	triyo_	*clojurescript
11:44	manutter	doh, missed the "cljs"
11:44	triyo_	thought so :)
11:44	manutter	some day I'll break down and visit the eye doctor again
11:45	triyo_	I think it might be a bug. I'll have a look at the source and issue db
12:04	TimMc	,(-> " foo" (.trim) (.length))
12:04	clojurebot	4
12:04	TimMc	Oh, Java.
12:05	manutter	wow, really?
12:05	jarel	,(.trim "foo")
12:05	clojurebot	"foo"
12:05	manutter	,(macroexpand '(-> "foo" (.trim) (.length))
12:05	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.lang.RuntimeException: EOF while reading>
12:06	manutter	,(macroexpand '(-> "foo" (.trim) (.length)))
12:06	clojurebot	(. (clojure.core/-> "foo" (.trim)) length)
12:06	TimMc	manutter: It's a nbsp
12:06	manutter	Ah
12:06	manutter	,(macroexpand-all '(-> "foo" (.trim) (.length))
12:06	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.lang.RuntimeException: EOF while reading>
12:06	manutter	,(macroexpand-all '(-> "foo" (.trim) (.length)))
12:06	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: macroexpand-all in this context, compiling:(NO_SOURCE_PATH:0)>
12:06	manutter	I should just give up.
12:06	TimMc	Is clojurebot shitting itself again?
12:07	TimMc	,(macroexpand '(-> "foo" (.trim) (.length)))
12:07	clojurebot	(. (clojure.core/-> "foo" (.trim)) length)
12:07	jarel	,(.length "foo")
12:07	clojurebot	3
12:07	jarel	huh
12:08	TimMc	,(macroexpand `(-> "foo" (.trim) (.length)))
12:08	clojurebot	(. (clojure.core/-> "foo" (.trim)) length)
12:09	scgilardi	~botsnack
12:09	clojurebot	Thanks, but I prefer chocolate
12:09	TimMc	,(-> "\u00a0foo" (.trim) (.length)) ; to be clear
12:09	clojurebot	4
12:09	jarel	oic
12:09	TimMc	Apparently, String.trim is not to be trusted.
12:09	hiredman	stop calling .length
12:10	hiredman	use count
12:10	jarel	http://en.wikipedia.org/wiki/Nbsp
12:10	manutter	TimMc: but if it's a non-breaking space, isn't the correct behavior to treat it like a non-space?
12:10	TimMc	hiredman: Ah, right.
12:10	TimMc	manutter: It's whitespace.
12:11	TimMc	Actually, I just found a good discussion of this: http://closingbraces.net/2008/11/11/javastringtrim/
12:11	manutter	ok, I can see that, since comma is also whitespace (in clojure)
12:12	TimMc	What does that have to do with trimming?
12:14	manutter	nothing really, just thinking out loud about the difference between "visible appearance" and "should be trimmed" (or ignored)
12:14	manutter	carry on. :)
12:15	robbe-	I like how Clojure internally translates '!' to 'BANG'. :-)
12:20	coopernurse	hey folks. I'm using noir with hiccup to build up some html
12:20	coopernurse	and I'd like to make part of my response conditional
12:20	fbru02	hey all... stupid question.. where did clojure.contrib.string end up going after the contrib split??
12:20	lazybot	fbru02: What are you, crazy? Of course not!
12:21	fbru02	lazybot: snack
12:21	coopernurse	so, for example: [:tr [:th "Ballot name"] [:th "Vote"] [:th "View Results"] [:th "Edit"] [:th "Delete"] ]
12:21	manutter	lol, good one lazybot
12:21	coopernurse	I'd like to make the last two [:th ] elements conditional based on a variable
12:21	manutter	isn't it just clojure.string now?
12:21	coopernurse	is there a simple way to inline that expression?
12:21	coopernurse	concat perhaps?
12:21	fbru02	manutter: didn't know that , let me check
12:22	arohner	coopernurse: if
12:22	coopernurse	arohner: yeah, I've been fiddling with if
12:22	arohner	(if foo [:th "Edit"] [:th "Delete"])
12:22	coopernurse	but I don't have the syntax right
12:23	arohner	how so?
12:23	manutter	,(let [x [:tr (if true [:th "Vote"]) ]] x)
12:23	clojurebot	[:tr [:th "Vote"]]
12:23	TimMc	,[:tr (if true [:th "Vote"]) ]
12:24	clojurebot	[:tr [:th "Vote"]]
12:24	TimMc	,[:tr (if false [:th "Vote"]) ]
12:24	clojurebot	[:tr nil]
12:24	manutter	hmm, wonder how hiccup renders [:tr nil]
12:24	coopernurse	manutter: good question
12:24	coopernurse	this is a good start.. I'll try these
12:24	arohner	hiccup ignores nils
12:25	arohner	that would become <tr /> or <tr></tr>
12:25	arohner	depending on whether it's a self-closing tag
12:25	TimMc	Anyway, use when instead of if.
12:25	duck1123	aside from setting a ref and then reading it later, is there any good way to make my function return the results of my try block when a finally is in use?
12:26	manutter	,(let [x [:tr (when false [:td])]] x)
12:26	clojurebot	[:tr nil]
12:26	TimMc	manutter: What's with the let?
12:26	coopernurse	,[:tr [:th "Ballot name"] [:th "Vote"] [:th "View Results"] (if true [:th "Edit"] [:th "Delete"]) ]
12:26	clojurebot	[:tr [:th "Ballot name"] [:th "Vote"] [:th "View Results"] [:th "Edit"]]
12:26	coopernurse	so [:th "Delete"] is ignored, as that's the "else" value
12:27	manutter	TimMc: wasn't sure if clojurebot understood ,[ or not
12:27	TimMc	,"hi"
12:27	clojurebot	"hi"
12:27	manutter	cool :)
12:27	TimMc	Yeah, it just goes for it.
12:27	TimMc	, so if you accidentally start with a comma...
12:27	clojurebot	#<CompilerException java.lang.RuntimeException: Unable to resolve symbol: so in this context, compiling:(NO_SOURCE_PATH:0)>
12:28	arohner	duck1123: you could use an atom in a let
12:28	coopernurse	how do I destructure this list? (concat) and (cons) don't seem to do it
12:28	coopernurse	,[:tr [:th "Ballot name"] [:th "Vote"] [:th "View Results"] (if true (concat [:th "Edit"] [:th "Delete"])) ]
12:28	clojurebot	[:tr [:th "Ballot name"] [:th "Vote"] [:th "View Results"] (:th "Edit" :th "Delete")]
12:28	arohner	(let [result (atom nil)] (try (swap! result (constantly body))) (finally blah) @result)
12:28	hiredman	duck1123: what?
12:29	hiredman	a finally doesn't change the result of an expression
12:29	duck1123	arohner: I guess you're right, atom would be better for this. Just wondering if there was something I was misiing
12:29	hiredman	,(try 1 (finally 2))
12:29	clojurebot	hiredman: Titim gan éirí ort.
12:29	hiredman	clojurebot: what?
12:29	clojurebot	what is wrong with you
12:29	TimMc	haha
12:29	hiredman	oh, right
12:29	TimMc	Is try disallowed?
12:30	TimMc	duck1123: hiredman's example returns 1
12:30	manutter	coopernurse: you don't need the concat, just put the [:th "Edit"] directly, as the "then" clause of your if statement.
12:31	coopernurse	manutter: but I want both edit and delete if the case is true
12:31	duck1123	ok, it seems I was going down the wrong path here. I wasn't getting the result I expected. I now see why
12:31	manutter	coopernurse: oh ah, just a sec
12:31	coopernurse	this works, but is silly
12:31	coopernurse	,[:tr [:th "Ballot name"] [:th "Vote"] [:th "View Results"] (if true [:th "Edit"] nil) (if true [:th "Delete"] nil) ]
12:31	clojurebot	[:tr [:th "Ballot name"] [:th "Vote"] [:th "View Results"] [:th "Edit"] ...]
12:31	hiredman	duck1123: (finally ...) is the closest thing clojure has to a statement, it has no result
12:33	manutter	,[:tr [:th "Ballot"][:th "Vote"] (when true [:th "Edit"] [:th "Delete"])]
12:33	clojurebot	[:tr [:th "Ballot"] [:th "Vote"] [:th "Delete"]]
12:33	manutter	coopernurse: ^^^
12:33	tufflax	that didnt work manutter
12:33	duck1123	manutter: wrap them in a list
12:33	arohner	you need a (list) in there
12:33	coopernurse	manutter: hmm.. what happened to edit?
12:33	manutter	oh wait, miscounted
12:33	TimMc	manutter: when returns the last expression's value
12:34	manutter	Yeah
12:34	tufflax	I think duck1123 is right, a list is what you need
12:34	tufflax	that's how prxml works at least
12:35	coopernurse	yeah, just not sure how to clobber the list container that wraps around it when I do this
12:35	duck1123	just don't be tempted to try to use a vector. That causes problems
12:35	coopernurse	,[:tr [:th "Ballot"][:th "Vote"] (when true (list [:th "Edit"] [:th "Delete"]))]
12:35	clojurebot	[:tr [:th "Ballot"] [:th "Vote"] ([:th "Edit"] [:th "Delete"])]
12:36	fbru02	manutter: thank that worked
12:36	arohner	coopernurse: the ([]) is fine, hiccup ignores it
12:36	coopernurse	oh really?
12:36	coopernurse	lemme try that
12:36	manutter	heh, at least I got one thing right today
12:36	arohner	manutter: that's better than most people :-)
12:37	coopernurse	arohner: ah, so it does. thank you!
12:37	manutter	Wait, no wonder, it's Friday the 26th -- that's TWICE Friday the 13th! Augh!
12:39	TimMc	a.k.a. FridayFriday the 13th :-P
12:39	duck1123	double friday all the way
12:46	grios	hello, I'm new on clojure and I'm studying compojure's code. I cannot understand how file-path is evaluated in this function: http://pastebin.com/EAFn859D Any hint?
12:49	bsteuber	grios: well it must have been defined before
12:49	bsteuber	or what do you mean "how it is evaluated"?
12:51	grios	it is not defined before (imho): https://github.com/weavejester/compojure/blob/master/src/compojure/route.clj
12:51	grios	i cannot understand why it works :)
12:51	coopernurse	grios: it's scoped in by the use block. it comes from ring.middleware.file-info
12:52	coopernurse	grios: oops.. I'm wrong.. one sec
12:52	coopernurse	but I think it's one of the libs in the use block
12:52	duck1123	I wasn't able to find it
12:53	coopernurse	hmm me either
12:54	raek	grios: if you have a repl with compojure ready, you can find out with (in-ns 'compojure.route) (resolve 'file-path)
12:54	bsteuber	that's weird indeed :)
12:54	coopernurse	just did it..
12:54	grios	raek: compojure.test.route=> (in-ns 'compojure.route) (resolve 'file-path) #<Namespace compojure.route> nil
12:54	coopernurse	nil
12:54	grios	ops
12:54	grios	wait...
12:55	raek	grios: ah, now I see it. it's not a var, it's part of a destructuring form
12:55	raek	{{file-path :*} :route-params}
12:55	grios	what?
12:55	clojurebot	what is short for ,(doc ...)
12:56	bsteuber	lol
12:56	raek	if there is a map like {:route-params {:* <foo>}}, file-path will be bound to <foo>
12:56	bsteuber	silly me
12:56	bsteuber	overlooked the let
12:56	raek	,(let [{{file-path :} :route-params} {:route-params {: "/mystery"}}] file-path)
12:56	clojurebot	"/mystery"
12:57	coopernurse	heh, nice
12:57	bsteuber	ah not that silly, it's hidden in the get
12:58	grios	ah okay, thank you raek; I spent my two hours without success, now I know why :)
12:59	grios	so , let [{{file-path :} :route-params} {:route-params {: "/mystery"}}] file-path) < === > {:route-params {:* <foo>}}
13:01	raek	it has two parts. the right side is a map value (like the one you wrote to the right of < === >) and the left side is a destructuring form to "reach into" the map and bind a value in it to the symbol "file-path"
13:02	mattmitchell_	How do I insert a value to a list, at a specific position?
13:02	raek	grios: (let [{{file-path :} :route-params} {:route-params {: "/mystery"}}] ...) = (let [{file-path :} {: "/mystery"}] ...) = (let [file-path "/mystery"] ...)
13:03	raek	mattmitchell_: (concat left-half [element] right-half)
13:03	mattmitchell_	raek: OK simple enough, thanks
13:04	grios	raek: ok; but the let is after the destructuring form, isn'it?
13:04	arohner	mattmitchell: there's not a direct way to do it because it can't be done efficiently on that datastructure
13:04	grios	I'm looking here: http://pastebin.com/EAFn859D
13:05	raek	grios: the GET macro expands into, among other things, another let form
13:05	mattmitchell_	arohner: ok so nothing like (insert-aftert 2 '(0 1 3) 1) => '(0 1 2 3) etc.?
13:06	arohner	mattmitchell_: you can write that, but it will require something that looks like raek's suggestion, with a take and a drop
13:06	mattmitchell_	err, that example is messed up but you know what i mean :)
13:06	mattmitchell_	arohner: ok cool
13:06	grios	raek: ah ok, compile-route calls in the last let-request
13:07	raek	grios: when you write (GET ...path... foo ...body...) it will become something like (... (let [foo ...request-map...] ... ...body... ...) ...)
13:07	grios	ok
13:07	TimMc	manutter: Looks like whitespace recognition in Java is best accomplished this way: [\p{javaWhitespace}\p{Zs}]+
13:07	grios	do you have discovered it expanding macros?
13:07	raek	grios: you can run macroexpand or macroexpand-1 on the code to see what it expands to
13:08	raek	,(macroexpand-1 '(if-let [x y] z))
13:08	clojurebot	(clojure.core/if-let [x y] z nil)
13:08	raek	,(macroexpand '(if-let [x y] z))
13:08	clojurebot	(let* [temp__3723__auto__ y] (if temp__3723__auto__ (clojure.core/let [x temp__3723__auto__] z) nil))
13:10	grios	thanks raek
13:10	manutter	TImMc: I'll have to bookmark that...
13:10	manutter	now, where's the "Save Bookmark" command in irc...?
13:11	raek	grios: it's possible that the destructuring happens in something else than a let, though. function parameters support destructuring too, for example.
13:13	grios	reak: "file-path" example works because GET is a macro; if it would be a function it had not worked, correct?
13:13	raek	grios: exactly
13:14	raek	macros are powerful (and trickyto read!) because the change the rules of evaluation
13:14	grios	I can see :)
13:14	grios	okay, I'm feeling enough smart, and I can go home
13:14	grios	bye
13:14	grios	and thank you
13:19	di-csuehs	I feel an approaching enlightment....or at least a learning experience...just need help getting over the edge.
13:22	di-csuehs	I'm using an API which uses the the with- idiom, but by the time my function calls the api's function which refers to the configuration var, it is unbound.
13:22	di-csuehs	This must mean I am not understanding the binding order.
13:22	raek	laziness combined with 'binding' often yields this problem
13:34	TimMc	Man, I would never have thought of that.
13:37	di-csuehs	unintended laziness...only there is no such thing...it is all supposed to be lazy.
13:39	di-csuehs	map returns a lazy sequence...so by the time it gets eval'd, the config var has gone away
13:39	raek	,(binding [out 123] (lazy-seq [out]))
13:39	clojurebot	(#<StringWriter (#<StringWriter >)
13:39	hiredman	that came out odd
13:39	icey	Have any of you had good luck with hiring Clojure devs? I'd love to start using it more seriously for a few things, but I don't know anything about how many people out there can write it well, and I would hate to have to rewrite stuff later because I can't find anyone to help maintain / work on it
13:42	hiredman	they are out there
13:43	TimMc	manutter: Here's what I ended up writing as a utility: https://gist.github.com/1173941
13:44	TimMc	Convert to Clojure as needed/desired.
13:44	arohner	icey: a good place to start is with people already in the clojure community
13:44	arohner	bloggers, OSS contributors, etc
13:44	technomancy	icey: it's pretty good if you can hire remote workers
13:44	technomancy	we haven't had any trouble finding qualified candidates
13:45	technomancy	if you limit yourself by locality you put yourself in a much harder place.
13:46	icey	technomancy: yeah, remote would be an option; this is something that's a bit down the road anyways. I guess my biggest worry comes from the fact that a lot of the problem space I work in is pretty boring :)
13:46	arohner	icey: what is the problem space?
13:47	icey	arohner: for what i'm working at the moment - health insurance rate comparisons / rating engines
13:47	technomancy	using clojure could be a good way to spice it up a bit
13:48	kzar	How do you tell emacs to kill a clojure thread again? C-c C-b I thought but it's not working
13:48	arohner	C-c C-c, doesn't always work
13:48	arohner	that kills the repl
13:48	icey	clojure is definitely a good fit for the problem space
13:48	kzar	C-c C-c ran the closest s-exp for me
13:49	arohner	in the repl buffer
13:49	icey	i've been watching the language for years and it seems amazingly stable for how young it is. now i'm just at the point of having fears related to switching away from one platform (.net) and onto something significantly more exotic (clojure, not the jvm)
13:50	TimMc	icey: Sounds like an important problem space, though -- there's not enough consumer information/empowerment in the insurance market.
13:53	icey	there is a lot of domain knowledge required, so i am looking for whatever weapons i can use to increase developer productivity as much as possible
13:54	icey	actually, it's not even a domain knowledge problem as much as it is a "every company does shit totally differently" problem :)
13:54	TimMc	haha
13:54	TimMc	I can already see that you'll need dynamically scoped binding.
13:55	TimMc	(with [company-does-weird-stuff true] (process-things))
13:56	icey	my current solution uses c# and is scriptable with ironpython... i thought i'd be able to take it to the carriers and say "hey here's the api, just fill in the blanks to hook in to this system"; but python was too much of a stretch so we ended up writing all the scripts ourself
13:56	icey	i figure if i'm going to write all the guts & gear code then it might as well be in something that provides more flexibility
14:01	icey	lol, i guess no questions are original; just found a really great thread on the mailinglist that features someone with a lot of my concerns... from 2009 :) (thanks again everyone)
14:04	tcepsa	When defining a namespace with hyphens in it, is it true that you
14:04	tcepsa	should name the corresponding directories and file with underscores
14:04	tcepsa	where the hyphens go?
14:04	tcepsa	e.g. test.record-types would be in test/record_types.clj ?
14:05	Vinzent	tcepsa, yes
14:06	tcepsa	Okay, so then if I define some records (using defrecord) in that
14:06	tcepsa	namespace, what's the correct way to access them from another namespace?
14:07	tcepsa	Because test.record-type.TestRecord gives me a "class not found" exception
14:07	tcepsa	But test.record_types.TestRecord works
14:07	raek	tcepsa: you need to import the record types like java classes
14:07	tcepsa	Oh! Okay, I'll give that a try
14:08	tcepsa	(I had been using :use and :require)
14:08	raek	so, you end up needing both use/require and import...
14:09	tcepsa	raek: Okay, what should that look like?
14:10	raek	(ns ... (:require your-ns) (:import your-ns.TheRecordType))
14:12	tcepsa	raek: Thanks, I'll see if I can get that to work
14:14	raek	but it sounds a bit weird that test.record_types.TestRecord worked but not test.record-type.TestRecord
14:14	raek	tcepsa: which clojure version are you running? I vagely recall that something like this was fixed in clojure 1.2.1
14:15	raek	http://dev.clojure.org/jira/browse/CLJ-432
14:16	raek	tcepsa: anyway, it's often simpler to expose a "constructor function" instead
14:17	tcepsa	raek: Ah, thanks, I'll double check that
14:18	raek	looks like test.record_types.TestRecord is the "correct way" in some sense. yuck.
14:18	tcepsa	raek: Hmmm, okay. That would explain why it's still not working
14:19	tcepsa	Okay, yeah, if I do
14:19	tcepsa	(ns ... (:require scratch.record-types) (:import scratch.record_types.Example))
14:19	tcepsa	then it works
14:20	tcepsa	But if I use a dash in the :import then it fails
14:21	tcepsa	(It looks like I am using version 1.2.1)
14:22	tcepsa	Is there a way to check the Clojure version from within the REPL?
14:23	raek	,(clojure-version)
14:23	clojurebot	"1.3.0-master-SNAPSHOT"
14:23	tcepsa	Thanks, yes, I am using 1.2.1
14:25	TimMc	tcepsa: You had an "s" at the end of record_types, but not record-type. Probably just a transcription typo, but I thought I should mention it.
14:25	Vinzent	hm, samething here
14:25	Vinzent	(but not with 1.2.0)
14:26	tcepsa	TimMc: Good catch! That was a transcription error this time (but would
14:26	tcepsa	have been very frustrating if it were the actual problem!)
14:28	Vinzent	http://paste.org.ru/?c3yyiv - and in the 1.2.0 defrecord returns foo-bar.Foo. Interesting
14:31	tcepsa	Is there some way to submit this as an issue?
14:33	TimMc	&findfn "a-b" "a_b"
14:33	TimMc	$findfn "a-b" "a_b"
14:35	stuartsierra	tcepsa: In 1.3 defrecords create real constructor functions.
14:36	tcepsa	stuartsierra: Ah, okay, then I'll switch to that. Thanks!
14:36	scottj	ibdknox: have you tested output-to and output-dir on cljs-watch? I tried them last night and they didn't seem to work
14:36	ibdknox	scottj: are you using zsh?
14:36	scottj	ibdknox: yes and escaped {
14:37	scottj	I think I ran it under bash though too to test
14:37	scottj	cljs-watch src \{:output-to "public/cljs/bootstrap.js" :output-dir "public/cljs/"\}
14:37	ibdknox	scottj: it works on bash for me, zsh doesn't get any args at all
14:37	ibdknox	ever
14:37	scottj	that's the line I used, I ended up editing cljs-watch
14:38	ibdknox	scottj: I also tried with cljsc and that had the same issue
14:38	scottj	ok I'll retest in bash
14:38	ibdknox	you shouldn't need to escape in bash
14:39	srid	fyi - we just released a new version of Stackato with support for Clojure; invite codes here - http://www.reddit.com/r/programming/comments/jv8uo/activestate_adds_python_django_support_to/
14:39	ibdknox	srid: congrats
14:40	scottj	ibdknox: might want to ignore .#foo.cljs files (emacs autosaves I think)
14:40	ibdknox	hm, I thought I did that
14:40	scottj	or probably any .foo.cljs
14:40	ibdknox	I think I lost one of my commits somewhere
14:41	ibdknox	yeah, vim does the same thing
14:41	amalloy	$findfn "a-b" "a_b"
14:41	lazybot	[clojure.core/munge clojure.core/namespace-munge]
14:41	amalloy	TimMc: sorry for the inconvenience, he's back
14:42	scottj	ibdknox: just tried under bash and it doesn't work
14:42	ibdknox	hm
14:42	ibdknox	btw
14:42	ibdknox	it does ignore . files...
14:43	scottj	but still shows exception on them? :: watcher :: Building ClojureScript files in :: src/java.io.FileNotFoundException: The file src/emailatask/cljs/.#frontend.cljs does not exist.
14:44	ibdknox	are you sure you have my latest?
14:44	Vinzent	->MyRecord looks strange
14:45	scottj	"fix bug that causes bootstrap.js to be created as a dir." latest commit
14:45	ibdknox	scottj: k, I can repro the options not taking
14:45	scottj	there's no build process to create a new cljs-watch is there? it looked like the script had the source inline
14:46	scottj	ibdknox: gtg
14:47	ibdknox	scottj: thanks, I'll get it fixed up
14:49	hiredman	Vinzent: reads as "to MyRecord"
14:49	tcepsa	stuartsierra: As it stands, I am having the same problem (with
14:49	tcepsa	defrecord and hyphenated namespaces) in 1.3.0-master-SNAPSHOT as in 1.2.1
14:50	Vinzent	hiredman, I understand, but still looks strange
14:51	cemerick	Funny that ->Foo comes up just now. http://dev.clojure.org/jira/browse/CLJ-833
14:52	TimMc	srid: The article has a broken link to Stackato
14:52	tcepsa	http://pastebin.com/G3yhyjUq
14:53	srid	TimMc: ah ok, here's the link - http://www.activestate.com/cloud
14:53	TimMc	Yeah, it's just missing a "/" to make it an absolute path.
14:54	TimMc	looks like it escaped into the last link in your reddit comment
14:55	tcepsa	Now with more documentation: http://pastebin.com/Mr5atT21
14:55	tcepsa	Defrecord doesn't play nicely with hyphenated namespaces
14:56	Vinzent	I'm curious why defrecord should create a function? Why not (new-from-map Foo {:a 1}), or something similar?
14:58	stuartsierra	Dunno. It was a long-thought discussion on the dev.clojure.org wiki.
15:07	Vinzent	(record MyRecord 1 2) and (record-map MyRecord :a 1 :b 2) seems ideal, imo
15:07	Vinzent	(as described here http://groups.google.com/group/clojure-dev/browse_thread/thread/4a0447939ebed7c4)
15:08	cemerick	Vinzent: record and record-map would have to be macros, and thus couldn't be used with HOFs
15:08	hiredman	I've noticed http://dev.clojure.org/display/design/JIRA+workflow doesn't seem to address assigning, should assign issues to yourself?
15:08	hiredman	cemerick: macros or use reflection
15:09	hiredman	both are distasteful
15:09	cemerick	Right; neither of which are kosher
15:09	Vinzent	cemerick, ah, so it's done for speed
15:09	arohner	is it possible to create a class with several constructors, using gen-class? I have (defn -init ([] (...)) ([foo] ...) ([foo bar] ...)), but (show) only lists the first constructor
15:09	cemerick	Thus, the implicit fn definitions — which I'm not a fan of, but… shrug
15:10	coopernurse	anyone know of a function in ring / compojure / noir that given a relative url returns a full url with host/port/context prepended?
15:10	cemerick	Vinzent: Seems like a reasonable expectation.
15:10	arohner	coopernurse: I'm pretty sure that doesn't exist
15:11	coopernurse	arohner: ok.. servlet api has some stuff that can help with that, but a convenience function would be nice
15:11	coopernurse	ooh.. maybe hiccup.core/with-base-url
15:14	coopernurse	hmm, nope
15:15	coopernurse	looks like that's just a macro that takes the base url
15:15	amalloy	coopernurse: doesn't java.net.URL do something like that?
15:17	coopernurse	amalloy: I don't believe so. you need the host/port from the HttpServletRequest
15:21	coopernurse	something along these lines. I'll see about porting it. http://www.java2s.com/Code/Java/Servlets/GetRelativeUrlforservlet.htm
15:32	LauJensen	Do we have any examples of scraping webpages behind logins? ie. negotiating cookies and all that
15:32	coopernurse	LauJensen: the apache HttpClient lib will automatically store/send cookies. not sure if there's a clojure wrapper for it yet
15:33	coopernurse	perhaps: http://clojars.org/diamondap/clj-apache-https
15:33	LauJensen	coopernurse: Excellent, thanks
15:34	coopernurse	you bet. docs are at github: https://github.com/rnewman/clj-apache-http
15:34	coopernurse	or is that a different lib? http vs https. author looks different
15:35	coopernurse	sorry, yeah those two links are different libs
15:35	coopernurse	but they appear to wrap the same HTTPClient lib under the hood, so both probably do what you need
15:37	coopernurse	I'm not seeing an obvious way to access the HttpServletRequest in noir.. anyone know if defpage exposes it? or do I have to write middleware
15:51	Somelauw	What would be the best way to implement a datastructure in clojure? I know clojure likes to use dicts for everything, but dicts are slow, you can't overwrite the way that for iterates over them and you can't decide how to should be printed. So I think that would be one of the cases in which you should use genclass.
15:52	amalloy	Somelauw: noooo, not genclass
15:52	amalloy	deftype please
15:52	hiredman	gen-class is slow
15:53	amalloy	really?
15:53	hiredman	yes
15:53	stuarthalloway	slow/fast doesn't mean much without a requirement
15:53	stuarthalloway	but +1 hiredman
15:54	hiredman	"gen-class just adds another layer of dispatch"
15:54	stuarthalloway	if you are writing a datastructure, deftype is your friend
15:54	amalloy	Somelauw: https://github.com/flatland/ordered/blob/develop/src/ordered/map.clj is an example of mine, implementing maps that retain insertion order
15:54	hiredman	deftype removes one
15:54	amalloy	the final version is kinda unreadable due to performance optimizations, but you can probably see sorta what's going on?
15:56	amalloy	Somelauw: https://github.com/flatland/ordered/blob/1ed7e95d093c9de74701a7239d7ba04c9f7464d0/src/ordered/set.clj is a less messy implementation of ordered sets
15:59	Somelauw	amalloy: Thanks, I will look at them.
15:59	stuarthalloway	anybody here use the clojure maven plugin and have context on http://dev.clojure.org/jira/browse/CLJ-822?
16:05	Mike\|home	I saw a function that looked like this: (fn [[a b]] [b (+ a b)]) Is the inner [a b] destructuring?
16:05	amalloy	yes
16:05	Bronsa	yes
16:05	Mike\|home	Radical.
16:06	Bronsa	i'd say awesome
16:06	amalloy	Mike\|home: i smell fibonacci
16:06	ibdknox	lol
16:06	coopernurse	there's a technique noir is using in cookies.clj that I may want to emulate, but I want to make sure I understand what's going on
16:06	Mike\|home	Indeed, amalloy :)
16:06	coopernurse	looking at: https://github.com/ibdknox/noir/blob/master/src/noir/cookies.clj
16:06	arohner	anyone have ideas on why (future (+ 1 1)) would fail, even on in a clean repl session?
16:06	coopernurse	specifically, I want to make sure I understand (binding ) that happens in noir-cookies
16:07	Mike\|home	I still feel pretty stupid because I can't do much with Clojure, even though I've been at it for a few weeks. Haha.
16:07	ibdknox	coopernurse: it creates a threadlevel binding
16:07	coopernurse	ibdknox: ok, great. that's what it appears
16:07	ibdknox	coopernurse: which means, in this case, that it will have that value for that specific request
16:07	coopernurse	so all calls to other cookie funcs by that thread will use those local bindings
16:07	ibdknox	coopernurse: during that request, yes
16:08	coopernurse	ibdknox: that's what I figured - otherwise noir would be broken with concurrency > 1
16:08	ibdknox	ibdknox: yep :)
16:08	ibdknox	lol
16:08	ibdknox	I like talking to myself
16:08	coopernurse	heh
16:08	ibdknox	coopernurse: what are you trying to do?
16:09	coopernurse	ibdknox: well, I'm still puzzling over how to build a full URL based on the current request context
16:09	coopernurse	so I'm planning on writing a lib that might pull a similar trick
16:09	manutter	arohner: odd, if I try (future (+ 1 1)) I get java.util.concurrent.RejectedExecutionException
16:09	coopernurse	use (binding) to make the request thread local, and expose functions that operate on that binding
16:09	ibdknox	coopernurse: wait, you just want the requested uri?
16:09	manutter	arohner: is that what you're seeing?
16:09	arohner	manutter: yeah
16:10	arohner	(.isTerminated clojure.lang.Agent/soloExecutor) => true
16:10	coopernurse	ibdknox: no, I want to create an url relative to the base url of the current request
16:10	manutter	arohner: that's weird, I'm sure I played with future before, without issues.
16:10	ibdknox	coopernurse: by default any url missing the root slash will be relative
16:11	arohner	manutter: https://github.com/technomancy/leiningen/issues/265
16:11	coopernurse	ibdknox: so, for example, if the current request is: http://example.com:2913/foo/bar
16:11	coopernurse	ibdknox: and the context root is /foo (which I have no way of knowning in advance)
16:11	coopernurse	ibdknox: and I ask for a relative url of: "/baz", then I expect: http://example.com:2913/foo/baz
16:12	Mike\|home	Agh. I'm packing to move, but I ran out of boxes.
16:12	manutter	arohner: ah
16:12	Mike\|home	Better start making piles.
16:12	ibdknox	I see
16:12	coopernurse	ibdknox: I'm trying to construct the absolute url, without having to know how the WAR was deployed, which the servlet api provides hooks for, but you need the HttpServletRequest
16:12	ibdknox	coopernurse: gotcha. Sounds like that would be reasonable
16:12	Bronsa	user=> (future (+ 1 1))
16:12	Bronsa	#<core$future_call$reify__5508@2586b11c: 2>
16:12	Bronsa	user=> @*1
16:12	Bronsa	2
16:13	coopernurse	ibdknox: but noir doesn't appear to expose the request, and even if it did, passing it around seems crufty.. so this (binding) trick looks good
16:13	Bronsa	for me it works
16:13	ibdknox	coopernurse: well, you can easily create a middleware that adds the uri to the params passed to defpage, but I think your solution sounds more robust
16:14	amalloy	coopernurse: yeah, that's one of the things binding is for. i have a middleware that binds url to the uri of the request
16:14	hugod	stuarthalloway: for adding clojure.test to zi, I ended up writing a macro that used binding in 1.2 and with-redefs in 1.3
16:14	coopernurse	amalloy: ibdknox: cool, thanks. I will explore. definitely the sort of code you want to make sure you get right, lest wires get crossed
16:14	stuarthalloway	hugod: the dynamic binding fix is now pushed
16:16	ibdknox	stuarthalloway: shot in the dark, but do you happen to know when speakers will get notified for the conj? We want to buy our tickets soon.
16:16	amalloy	(inc ibdknox)
16:16	lazybot	⟹ 2
16:17	hugod	stuarthalloway: thanks
16:17	stuarthalloway	ibdknox: we hope to announce before early bird is over
16:17	stuarthalloway	but if we don't ...
16:18	amalloy	though, ibdknox, i wouldn't be surprised if they could arrange a refund if it turns out you get to speak :P
16:18	stuarthalloway	(1) anybody who buys now will get refunded if they are a speaker
16:18	ibdknox	stuarthalloway: great, that works
16:18	mwillhite	hey all, brand new to clojure and java…trying to set up my dependencies w/ leiningen, but I'm not sure how to request the correct package: http://pastie.org/2435373
16:19	mwillhite	starting with the java.awt stuff, where can I find the resource?
16:19	amalloy	mwillhite: those are all packages included in the jre, so you don't have any special dependencies
16:20	mwillhite	well I get this error: Exception in thread "main" java.lang.ClassNotFoundException: quote.(java.awt AWTException Robot Rectangle Toolkit) (core.clj:1)
16:20	mwillhite	so maybe one of those don't actually exist…
16:20	mwillhite	obviously I'm just copying and pasting code here…
16:21	amalloy	they should exist, and they do when i try it. are you sure what you pasted is your actual code?
16:21	mwillhite	yep
16:21	mwillhite	weird…
16:21	coopernurse	mwillhite: what JDK are you using, and what OS?
16:22	mwillhite	I'm on Lion
16:22	mwillhite	not sure how to find the JDK
16:22	amalloy	coopernurse: i doubt it matters. the exception indicates his clojure syntax is broken, not anything class-related
16:22	niko22	when using emacs/slime i get a "byte-code: Failed to download Clojure jars" - any suggestions?
16:23	amalloy	mwillhite: there are two many close parens at the end of your import. this makes me strongly suspect that your actual code is (ns (import ...))
16:24	mwillhite	it is…
16:24	mwillhite	let me paste the entire file
16:24	mwillhite	its small
16:24	amalloy	ugh. that's why i asked you if you pasted your actual code
16:24	mwillhite	I deeply apologize
16:24	amalloy	what you pasted would be correct in isolation; being wrapped in (ns) slightly alters the meaning
16:24	coopernurse	mwillhite: yeah, you could start a REPL and just try: (import '(java.awt AWTException Robot Rectangle Toolkit))
16:25	mwillhite	http://pastie.org/2435398
16:25	mwillhite	ah, so my whole code should be wrapped in the namespace
16:25	amalloy	you want more like (ns (:import (java.awt AWTException ...) (java.awt.image ...)))
16:25	mwillhite	yeah that makes sense
16:25	mwillhite	Exception in thread "main" java.lang.IllegalArgumentException: Parameter declaration quote should be a vector (core.clj:1)
16:25	amalloy	this is a confusing distinction, i'm aware. basicalle, (import) is a function, so needs its arguments quoted. (ns) is a macro, which doesn't need quoting
16:26	tcepsa	mwillhite: Not your whole code; only the imports should be in the
16:26	tcepsa	ns form.
16:26	amalloy	and it uses :import instead of import to clarify the difference
16:26	mwillhite	oh
16:27	mwillhite	okay, so updating to the syntax amalloy suggested gets it to compile
16:27	lancepantz	amalloy: hi
16:27	mwillhite	thanks people
16:27	tcepsa	Sweet
16:31	mwillhite	given the code in this pastie: http://pastie.org/2435398
16:31	mwillhite	shouldn't I be able to do this from the repl:
16:31	mwillhite	(screen-grab "screen.jpg")
16:32	tcepsa	mwillhite: You need to be in the correct namespace in the REPL
16:32	coopernurse	mwillhite: you need to namespace qualify it, or use (in-ns) to switch to the screencap.core ns
16:32	mwillhite	I'm using the lein repl…
16:32	coopernurse	so this should work: (screencap.core/screen-grab "screen.jpg")
16:32	mwillhite	I thought that put me in the right namespace
16:32	mwillhite	okay
16:32	coopernurse	if the prompt says: user=>
16:32	coopernurse	then you're in the user namespace, which is the default
16:32	mwillhite	it does
16:33	mwillhite	oh right okay
16:33	coopernurse	if you do this: (in-ns 'screencap.core)
16:33	coopernurse	then the prompt will change
16:33	mwillhite	screencap.core=> (screen-grab "screen.jpg")
16:33	mwillhite	java.lang.Exception: Unable to resolve symbol: screen-grab in this context (NO_SOURCE_FILE:6)
16:34	coopernurse	have you loaded the file into the repl?
16:34	mwillhite	whats interesting too, is when I tried the first method (from user=>) including the namescape, it said it couldn't find the namespace
16:34	mwillhite	I just typed 'lein repl' from the project root
16:34	coopernurse	ah
16:34	coopernurse	try: (load-file "yourfile.clj")
16:35	tcepsa	What's the path (including filename) of that file?
16:35	tcepsa	(It has to be in a specific location relative to your project
16:35	tcepsa	root for lein repl to find it and load it for you)
16:35	coopernurse	right, so absolute path is best for now
16:36	tcepsa	Should be in src/screencap/core.clj
16:36	mwillhite	/Users/mwillhite/apps/clojure_hacks/screencap/core.clj
16:36	coopernurse	yeah, pass that to load-file
16:36	mwillhite	I was digging into clojure a few months back and I never had to load my file before, maybe thats new?
16:36	mwillhite	will try
16:37	mwillhite	getting a file not found exception
16:37	tcepsa	What coopernurse suggested should work. To get it to load
16:37	tcepsa	automatically, you need to put your screencap directory in a directory
16:37	tcepsa	named src
16:37	mwillhite	(load-file "/Users/mwillhite/apps/clojure_hacks/screencap/core.clj")
16:37	mwillhite	oh I missed a dir
16:38	mwillhite	k, got it loaded…
16:38	coopernurse	great, so you should be able to call screen-grab now
16:38	mwillhite	well that seemed to work…not sure where it put my file tho :P
16:38	mwillhite	oh, same dir
16:39	coopernurse	nice
16:40	mwillhite	I have to say, I've always been super impressed by the help received from this channel (and the seemingly inifinite patience), thank you so much for helping me out
16:40	coopernurse	mwillhite: totally welcome.. happy to have a question I actually can answer
16:40	mwillhite	:)
16:40	coopernurse	yeah, I found the tooling a little hard to wrap my head around at first
16:41	coopernurse	but once you learn the basic handful of tricks to eval files and whatnot, then it's a very productive platform imho
16:41	mwillhite	yeah, especially having been completely immersed in javascript and ruby for the past 5 months…my clojure mind has withered a bit
16:42	mwillhite	I'm really excited about learning it, just need to find the right application so my employer will let me do it during the day
16:42	coopernurse	yeah, I have to keep a doc in evernote for each lang/platform I use to remind me of the incantations like these
16:42	coopernurse	heh, yeah I know what you mean
16:43	ordnungswidrig	anybody using emacs from emacsformacosx.com? I have problems with german keyboard and keybindings
16:43	mwillhite	I need to start documenting the tricks as I learn, I think that will help a lot
16:44	coopernurse	mwillhite: yeah, I'm inconsistent with it. I found using something like evernote, where you don't have to think about naming a file, you can just paste stuff in and organize it later, has helped
16:44	coopernurse	mwillhite: anything to eliminate any barriers to taking notes
16:44	mwillhite	yeah totally, I'm a fan of evernote…thanks again for your help
16:44	coopernurse	you bet
16:44	coopernurse	have fun
16:45	tcepsa	amalloy: Same here!
16:47	hiredman	we had a sonian meetup, where it was discovered one of my cowokers has an org-mode were he lists the topics and his agreement/disagreement with another coworker, so we he is accurately able to say "I agree with so-and-so 40% of the time"
16:47	ibdknox	lol
16:48	tcepsa	Nice!
16:48	technomancy	needs a web frontend though. http://iagreewithdanlarkin.com
16:49	technomancy	you could get achievement badges, etc.
16:49	hiredman	it needs some kind of crowd sourcing statistical backing, so you just answer a few questions and it gives you a good guess at your agreement percentage with danlarkin
16:49	danlarkin	oh boy
16:50	danlarkin	what is this I don't even
16:52	scottj	cemerick: both your theories apply to me, I had no clue about ->Blah and it definitely didn't look like a constructor to me, I thought of threading too.
16:52	cemerick	damn, fogus is never around when I have an opportunity to gloat! ;-)
16:53	cemerick	scottj: I've no doubt some docs will get in, eventually. Hopefully for 1.3.0, but we'll see how that goes.
16:57	icey	Do people lean one way or the other on clojureql vs clojure.contrib.sql?
16:58	stuartsierra	cemerick: I'll gloat for you the next time I see him.
16:59	cemerick	stuartsierra: ha, much obliged.
16:59	stuartsierra	'later.
16:59	scottj	icey: both are used quite a bit, I don't have a large enough sample to say one is more popular than the other
16:59	amalloy	icey: hasn't c.c.sql been put down in favor of c.j.jdbc?
16:59	icey	amalloy: entirely possible; i'm a noob :)
17:00	icey	scottj: good enough for me, thanks... just making sure i'm not looking at using a solution that nobody uses or has flaws that i haven't found in google yet
17:10	kzar	Is there a function you can use a predicate that just returns the argument? I want to use not-any?, watching out for non-nil values
17:11	scottj	kzar: example of inputs and output?
17:12	raek	kzar: identity
17:12	kzar	raek: aha thanks
17:14	amalloy	kzar: though (every? nil? xs) seems clearer for your actual goal
17:14	kzar	amalloy: oh yea, good point
17:27	coopernurse	ok, this appears to work for concurrency=1. but if someone has a moment to check my use of (binding) here I would be grateful. https://gist.github.com/1174475
17:29	amalloy	coopernurse: the semantics are the same, but i'd use declare instead of def
17:30	coopernurse	amalloy: thanks, changing..
17:30	zoldar	I have a defrecord refering to vars (functions, atoms etc.) in the same namespace. When I aot compile the namespace and try to use the record class in java code, it ends up with "Var some.ns/some-var is unbound" pointing to a reference to that var in the defrecord. What may I be missing?
17:31	amalloy	anyway, you certainly don't have any binding-related problems
17:32	amalloy	i'd write your port test as (when-not (#{80 443} port) (str ":" port))
17:32	coopernurse	amalloy: love it, thanks
17:33	amalloy	though i guess that could cause silent failure if, say, port is an int and 80 is a long. though i think that's fixed in 1.3
17:33	coopernurse	ooh
17:33	coopernurse	let me try that
17:34	coopernurse	getPort() is an int
17:34	coopernurse	literal numbers are ints right, depending on their size?
17:34	coopernurse	,(type 80)
17:34	clojurebot	java.lang.Long
17:34	coopernurse	oh
17:34	coopernurse	in my repl is says Integer
17:35	amalloy	coopernurse: right, that changed in 1.3
17:35	coopernurse	ok, interesting
17:35	amalloy	&(class 90)
17:35	lazybot	⇒ java.lang.Integer
17:36	amalloy	&clojure-version
17:36	lazybot	⇒ {:major 1, :minor 2, :incremental 0, :qualifier ""}
17:36	amalloy	,clojure-version
17:36	clojurebot	{:interim true, :major 1, :minor 3, :incremental 0, :qualifier "master"}
17:36	coopernurse	ah, good to know
17:37	coopernurse	so = tests will work between int and long, but not set membership
17:37	amalloy	right
17:37	coopernurse	is that a bug or feature?
17:37	hiredman	the hoops you have to jump through to get a boxed integer in 1.3 are kind of a drag
17:38	hiredman	I mean, maybe it's good for performance, but if a java method requires an Integer you have to do something like (Integer/valueOf (int 10))
17:38	coopernurse	yeah, that particular case is very subtle
17:39	hiredman	that is one word you could use to describe it
17:39	amalloy	haha
17:39	coopernurse	so is that how 1.3 is going to stay? or is there talk of changing it?
17:39	amalloy	,(Integer. (int 10))
17:40	clojurebot	10
17:40	amalloy	hiredman: that's simpler, at least?
17:40	dnolen	hiredman: eh? (Integer. 10) works
17:40	amalloy	,(Integer. 10)
17:40	clojurebot	10
17:40	dnolen	,(type (Integer. 10)
17:40	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.lang.RuntimeException: EOF while reading>
17:40	dnolen	,(type (Integer. 10))
17:40	clojurebot	java.lang.Integer
17:40	hiredman	ah, no kinding
17:41	hiredman	"autoboxing, unless you're an int or float"
17:43	hiredman	what really through me was (int 10) was throwing an exception
17:43	hiredman	(Long cannot be cast to Integer or something)
17:47	dnolen	hiredman: ? I haven't seen anything like that.
17:50	hiredman	,(type (int 10))
17:50	clojurebot	java.lang.Long
17:51	hiredman	you cannot pass that to a method that takes an Integer
17:51	zoldar	I've put together the minimal example describing my problem: http://pastebin.com/P4C3FxXM
17:52	hiredman	you need to load the namespace from java
17:52	paul__	hey, I'm trying to apply a function with side effects to a collection, that also updates the collection, and (dorun (map (fn... dosnt seem to be working
17:52	paul__	any ideas?
17:52	hiredman	,(doc dorun)
17:52	clojurebot	"([coll] [n coll]); When lazy sequences are produced via functions that have side effects, any effects other than those needed to produce the first element in the seq do not occur until the seq is consumed. dorun can be used to force any effects. Walks through the successive nexts of the seq, does not retain the head and returns nil."
17:52	hiredman	^- "returns nil."
17:53	hiredman	,(doc doall)
17:53	clojurebot	"([coll] [n coll]); When lazy sequences are produced via functions that have side effects, any effects other than those needed to produce the first element in the seq do not occur until the seq is consumed. doall can be used to force any effects. Walks through the successive nexts of the seq, retains the head and returns it, thus causing the entire seq to reside in memory at one time."
17:53	paul__	ah, Ill try that
17:53	paul__	thanks
17:54	paul__	OK, it looks like that'll work
18:07	chewbranca	anyone have any recommendations for coercing a String to an InputStream?
18:08	chewbranca	basically I'm trying to save an attachment to a couchdb document, the method in clutch I'm using expects either a File or an InputStream, but I need to save from a string, and created a temporary file on the disk just seems like a bad way to accomplish it
18:09	chewbranca	s/created/creating/
18:09	lazybot	<chewbranca> basically I'm trying to save an attachment to a couchdb document, the method in clutch I'm using expects either a File or an InputStream, but I need to save from a string, and creating a temporary file on the disk just seems like a bad way to accomplish it
18:09	manutter	Try (StringReader. the-str)
18:09	manutter	hmm, that's probably not sufficient
18:09	coopernurse	(ByteArrayInputStream. (.getBytes the-str))
18:10	chewbranca	manutter: yeah actually tried that but didn't work
18:10	manutter	doh, I was just about to say that
18:10	manutter	my google-fu is too slow
18:12	chewbranca	coopernurse: excellent! thanks that did the trick
18:12	coopernurse	chewbranca: sweet
18:13	amalloy	you should really make sure you write it with the character encoding you intend to
18:13	coopernurse	amalloy: heh, was just writing that
18:13	ordnungswidrig	I just thought of that
18:13	coopernurse	(ByteArrayInputStream. (.getBytes the-str "utf-8"))
18:13	coopernurse	for example
18:14	chewbranca	ok cool, thanks, adding that in
18:15	chewbranca	also, what's the clojure idiomatic way of naming conversion functions? right now I'm going with string-to-input-stream
18:15	amalloy	meh
18:16	amalloy	there are people who will like that, or will like str->input-stream. i like stream-from-string, personally
18:17	chewbranca	amalloy: ok, so more of a style preference, I'm not a huge fan of string-to-input-stream
18:34	scottj	how about input-stream?
18:35	scottj	and use protocols or multimethods
18:35	amalloy	scottj: clojure.java.io already does that
18:37	scottj	chewbranca: so I think the idiomatic way is just it after the result type
18:43	chewbranca	scottj: I tried using input stream but it treats the string as a file path, rather than a raw string. ByteArrayInputStream is working well though
18:45	tomoj	input-stream should accept a byte array
18:45	tomoj	like (input-stream (.getBytes "foo"))
18:51	chewbranca	tomoj: ahhh nice, that's a bit cleaner that directly using ByteArrayInputStream
19:10	justicefries	clojure is absolutely ruining ruby for me.
19:11	tomoj	:D
19:11	technomancy	justicefries: yeah, there needs to be a warning label for that
19:11	justicefries	yeah....
19:12	justicefries	think I'm okay with it. ;)
19:12	justicefries	the one thing I'm not sure of, and maybe this is because I just haven't done it...
19:12	justicefries	but how it fares organizationally against large codebases a la Rails.
19:15	scottj	justicefries: I think the conventions aren't there so each project is going to look different, it's up to your to organize them well
19:16	justicefries	ah sure.
19:55	Somelauw	Hi, does anyone remember the command to shutdown cake?
20:01	Somelauw	Nevermind, I already killed it using top.
20:04	amalloy	cake kill
20:07	Somelauw	That works
21:26	tnks	I don't know Clojure at all, but a friend was curious if Clojure had a currrying facility.
21:27	amalloy	well. because it has first-class functions, it is possible to curry. but it doesn't happen automatically like in haskell
21:27	hiredman	sort of depends what you mean by that
21:27	tnks	or maybe a more appropriate question is "how does Clojure solve problems other languages would use currying or partial eval to solve?"
21:27	amalloy	(instead, it allows functions to have a variable number of arguments)
21:27	danlarkin	it doesn't have currying like haskell has currying
21:27	hiredman	but sure you can create functions that are the partial application of another function
21:27	hiredman	,((partial + 1) 2)
21:27	clojurebot	3
21:28	tnks	awesome.
21:28	tnks	partial is really half the battle.
21:28	tnks	I'm going to send him here.
21:28	hiredman	a lot of people just function literals
21:28	hiredman	,(#(+ 1 %) 2) ; this sort of thing
21:28	clojurebot	3
21:29	hiredman	partial is prettier though
21:29	dnolen	red-black tree balance checking, https://gist.github.com/1174834 (yes I know, syntax needs to improve, working on it)
21:29	tnks	yeah, I'm not sure how to parse the latter.
21:29	amalloy	debatable. partial is more elegant, i think, but neither is pretty
21:29	tnks	what's the "%"?⇧
21:30	amalloy	&'#(inc %)
21:30	lazybot	⇒ (fn* [p1__12654#] (inc p1__12654#))
21:30	amalloy	&(#(inc %) 2)
21:30	lazybot	⇒ 3
21:30	hiredman	,'#(+ % 1)
21:30	clojurebot	(fn* [p1__10191#] (+ p1__10191# 1))
21:30	hiredman	% is the argument
21:31	hiredman	amalloy: "prettier"
21:31	hiredman	partial also doesn't generate more classes
21:31	tnks	okay, this feels very similar to the _ partial eval Scala has.
21:32	tnks	where % feels like _
21:39	dnolen	will probably let vector patterns take [], and seqs will match with ([] :seq).
21:45	amalloy	aw, hiredman, generating more classes is fun! who doesn't love classnames like sandbox10558$eval12677$foo__12678$fn__12679$bar__12680?
22:34	mbac	is there an unless primitive in clojure?
22:34	amalloy	&(doc when-not)
22:34	lazybot	⇒ "Macro ([test & body]); Evaluates test. If logical false, evaluates body in an implicit do."
22:35	mbac	cool!
22:36	amalloy	mbac: of course, it's easy to write your own
22:37	mbac	sure
23:17	dnolen	gotta love open source, https://gist.github.com/1174909
23:26	srid	is it possible to register custom type convertors for clojure's json library? at the minimum, i want to convert timestamp number in the JSON to java.sql.Timestamp objects automatically.
23:27	technomancy	srid: clojure has lots of json libs.
23:27	technomancy	cheshire allows that
23:27	technomancy	as does clojure-json
23:28	srid	i am using org.clojure/data.json, but I can switch to one of those
23:28	technomancy	oh, hm... well, it allows for customization on encoding. I don't know about decoding.
23:34	srid	whenever I add a new dependency via `lein install` or `lein deps`, is it mandatory to kill slime-repl and do clojure-jack-in again? all of this takes time. jvm is slow
23:35	srid	how about jambojure?
23:35	technomancy	lupus yonderboy
23:36	srid	it appears i can't use (use ...) alone in the repl. it must be wrapped in (ns foo ...). that sucks
23:36	hiredman	I decided I wanted a persistent map as a service, running on my laptop to be available for other little bits of code (like my irc->sqs notifcation stuff)
23:36	hiredman	srid: you need to quote the form
23:37	hiredman	,(use 'clojure.zip)
23:37	clojurebot	WARNING: next already refers to: #'clojure.core/next in namespace: sandbox, being replaced by: #'clojure.zip/next
23:37	clojurebot	WARNING: replace already refers to: #'clojure.core/replace in namespace: sandbox, being replaced by: #'clojure.zip/replace
23:37	clojurebot	WARNING: remove already refers to: #'clojure.core/remove in namespace: sandbox, being replaced by: #'clojure.zip/remove
23:37	clojurebot	nil
23:37	srid	right, thanks
23:37	hiredman	whoops, that must have broke a lot of things
23:37	technomancy	clojurebot: ABORT, ABORT
23:38	clojurebot	No entiendo
23:38	srid	chesire doesn't see to have custom decoders (only encoders)
23:39	hiredman	so I wrote this thing on top of infinispan that I can run via launchd to provide persistent key/value storage
23:39	technomancy	srid: update-in?
23:39	hiredman	and I need a name for it
23:39	technomancy	hiredman: army-of-one?
23:40	hiredman	ah!
23:40	hiredman	entrepot
23:40	technomancy	because seriously, do you have a data center under your desk?
23:41	hiredman	no? that would be ridiculous...
23:42	hiredman	it's totally sweet, I store a map of irc nicks to email addresses in entrepot so now my sqs thing can use gravatars
23:42	amalloy	dnolen: that's more like a bean than a pojo, fwiw
23:42	dnolen	amalloy: forgive my total Java ignorance, how so?
23:43	srid	technomancy: (update-in foo [1 :last_updated] f) <- here update-it only updates index 1, so i need to it multiple times passing 2 3 etc... I suppose.
23:43	srid	call it*
23:43	technomancy	srid: sure; a combination of map and update-in, I guess
23:43	amalloy	dnolen: well, pojo is Plain Old Java Object: conforms to no special specifications or conventions. beans were introduced so that property inspectors could manipuate properties by calling conventional get/set/is methods
23:45	dnolen	amalloy: open to better names, tho clearly this is not really a bean a either.
23:45	amalloy	and there's a reasonably well-tested camelCase->dash-case function at https://github.com/flatland/useful/blob/develop/src/useful/string.clj
23:45	amalloy	feel free to steal it
23:46	amalloy	technomancy: hey, i have a CA and i wrote that
23:46	amalloy	i think. checks blame
23:47	technomancy	but your CA only covers contributions to clojure and contrib!!1eleven
23:47	amalloy	that's probably true. funny if it weren't so sad :P
23:48	dnolen	amalloy: thx, sent it along to darevay.
23:48	srid	(map (fn [q] (update-in q [:creation_date] #(Timestamp. %))) json)
23:48	srid	beauty.
23:51	amalloy	pretty cool, though, dnolen
23:51	amalloy	`(. ~this ~(symbol n)) should probably be `(. ~this (~(symbol n)))
23:52	amalloy	but i guess since this isn't your code i won't bother you with it :)
23:52	dnolen	amalloy: always feel free to send corrections via pull requests :)
23:53	amalloy	dnolen: i sure will. let me know when you add this to match and i'll have a look then
23:54	dnolen	amalloy: that'd be great. will do.