#clojure – 2015-07-06

2015-07-06

00:17	turbofail	man. figwheel is pretty awesome
04:12	singa2015	hi
05:01	wombawomba	I'm having a hard time splitting a vector of numbers into sequential parts (i.e. [1 2 3 5 6 8] -> [[1 2 3] [5 6] [8]])
05:01	wombawomba	What's a good way of doing this?
05:10	namra	(doc partition)
05:10	clojurebot	"([n coll] [n step coll] [n step pad coll]); Returns a lazy sequence of lists of n items each, at offsets step apart. If step is not supplied, defaults to n, i.e. the partitions do not overlap. If a pad collection is supplied, use its elements as necessary to complete last partition upto n items. In case there are not enough padding elements, return a partition with less than n items."
05:11	TEttinger	,(doc partition-by)
05:11	clojurebot	"([f] [f coll]); Applies f to each value in coll, splitting it each time f returns a new value. Returns a lazy seq of partitions. Returns a stateful transducer when no collection is provided."
05:11	namra	cool even better
05:11	justin_smith	, (partition-by (partial apply -) (partition 2 1 [1 2 3 5 6 8]))
05:12	clojurebot	(((1 2) (2 3)) ((3 5)) ((5 6)) ((6 8)))
05:12	TEttinger	,(reductions #(= % (dec %2)) [1 2 3 5 6 8])
05:12	clojurebot	(1 true false false false ...)
05:12	justin_smith	not the full answer, but close...
05:12	TEttinger	,(reductions #(= % (dec %2)) 0 [1 2 3 5 6 8])
05:12	clojurebot	(0 true false false false ...)
05:12	TEttinger	hm
05:12	justin_smith	TEttinger: that reductions is comparing true or false to a number
05:12	TEttinger	right
05:13	TEttinger	,(reductions #(- % (dec %2)) 0 [1 2 3 5 6 8])
05:13	clojurebot	(0 0 -1 -3 -7 ...)
05:13	TEttinger	,(reductions #(- % (dec %2)) [1 2 3 5 6 8])
05:13	clojurebot	(1 0 -2 -6 -11 ...)
05:13	TEttinger	hm
05:14	TEttinger	,(map - [1 2 3 5 6 8] [2 3 5 6 8])
05:14	clojurebot	(-1 -1 -2 -1 -2)
05:16	TEttinger	,(let [base [1 2 3 5 6 8]] (map - base (drop (cycle base))))
05:16	clojurebot	#<IllegalArgumentException java.lang.IllegalArgumentException: Don't know how to create ISeq from: clojure.core$drop$fn__4606>
05:17	TEttinger	(doc drop)
05:17	clojurebot	"([n] [n coll]); Returns a lazy sequence of all but the first n items in coll. Returns a stateful transducer when no collection is provided."
05:17	justin_smith	,(#(apply conj (reduce (fn [[runs part] i] (if (= i (inc (peek part))) [runs (conj part i)] [(conj runs part) [i]])) [[] [(first %)]] (rest %))) [1 2 3 5 6 8])
05:17	clojurebot	[[1 2 3] [5 6] [8]]
05:17	TEttinger	,(let [base [1 2 3 5 6 8]] (map - base (drop 1 (cycle base))))
05:17	clojurebot	(-1 -1 -2 -1 -2 ...)
05:17	TEttinger	nice justin_smith!
05:17	TEttinger	(inc justin_smith)
05:17	lazybot	⇒ 270
05:18	justin_smith	TEttinger: fundamentally that algorithm needs two accumulators, and that's easiest to do with a reduce or loop
05:18	justin_smith	a simple lazy stream doesn't carry two states as easily
05:19	justin_smith	(though you could use lazy-seq by hand I think? Not easily though)
05:21	amalloy	justin_smith: it doesn't seem particularly hard to do lazily
05:21	justin_smith	OK
05:21	amalloy	you just have a recursive function with two arguments
05:22	wombawomba	I managed to solve it, but it seems there should be a neater approach: https://gist.github.com/aeriksson/b6f5e29a1e55fe83aa18
05:27	rritoch	What's the normal naming convention for a clojure "hello world" application? Would it be clj-mytech-helloworld or clj-mytech-hello-world ?
05:28	oddcully	isn't the "clj" prefix only used if you wrap something with the same name?
05:29	justin_smith	wombawomba: I think a lazy-seq version is doable (I am trying), but I think my reduce is beats that
05:30	wombawomba	justin_smith: yeah seems like it :)
05:32	rritoch	oddcully: The clj prefix just helps me visually isolate clojure apps from other apps. Anyhow, the only hello world I could find used hello-world so I guess that's what I'll use. It just looks like it's a bit too wordy that way.
05:37	justin_smith	wombawomba: my lazy version, does not fit in a one liner nicely https://www.refheap.com/105337
05:37	justin_smith	wombawomba: it works, and may be shortenable
05:40	justin_smith	wombawomba: just edited and removed some duplicated logic, still works, still too verbose https://www.refheap.com/105337
05:43	oddcully	and somewhere else the battle rages on whether to indent with tabs or spaces...
05:51	namra	yea what is actually the prefered indentation for clojure (tabs/spaces and how many)
05:52	justin_smith	namra: two spaces
05:53	namra	k using that
05:53	oddcully	this was targeted on the creative use of `,` to indent
05:53	namra	^
05:53	justin_smith	oddcully: haha, yeah, total hack
05:53	oddcully	the problem: my brain read `..`
05:53	oddcully	and gone, what?! why?!
05:54	justin_smith	oddcully: I promise I didn't invent using ,, in cond
05:59	wombawomba	justin_smith: cool, thanks!
05:59	TEttinger	gaaaaah
05:59	TEttinger	,(let [base [1 2 3 5 6 8]] (reduce (fn [stack [a b]] (if (= (- a b) -1) (conj (last stack) a) (conj (conj (last stack) a) [[b]]))) [[]] (partition 2 1 base)))
06:00	clojurebot	#error {\n :cause "java.lang.Long cannot be cast to clojure.lang.IPersistentCollection"\n :via\n [{:type java.lang.ClassCastException\n :message "java.lang.Long cannot be cast to clojure.lang.IPersistentCollection"\n :at [clojure.core$conj__4114 invoke "core.clj" 82]}]\n :trace\n [[clojure.core$conj__4114 invoke "core.clj" 82]\n [sandbox$eval389$fn__391 invoke "NO_SOURCE_FILE" 0]\n [clojure....
06:00	TEttinger	there's no conj-in
06:00	TEttinger	so I don't know how to append to an inner element in a nested vector
06:00	TEttinger	and get back the whole vector
06:00	justin_smith	TEttinger: update-in v [idx] conj foo
06:00	justin_smith	?
06:01	TEttinger	needs to be past the end
06:01	TEttinger	end can change
06:01	TEttinger	oh!
06:01	hyPiRion	or just (update v idx conj foo) with 1.7
06:01	hyPiRion	yay update
06:02	TEttinger	,(let [base [1 2 3 5 6 8]] (reduce (fn [stack [a b]] (if (= (- a b) -1) (update stack (dec (count stack)) conj a) (conj (update stack (dec (count stack)) conj a) [b]))) [[]] (partition 2 1 base)))
06:02	clojurebot	[[1 2 3] [5 5 6] [8]]
06:02	TEttinger	odd!
06:03	TEttinger	,(let [base [1 2 3 5 6 8]] (reduce (fn [stack [a b]] (if (= (- a b) -1) (update stack (dec (count stack)) conj a) (conj (update stack (dec (count stack)) conj a) []))) [[]] (partition 2 1 base)))
06:03	clojurebot	[[1 2 3] [5 6] []]
06:03	TEttinger	hm
06:05	justin_smith	(update stack (dec (count stack)) conj a) is (conj (pop stack) (conj (peek stack) a))
06:05	justin_smith	dunno, I kind of like the latter better
06:14	vlvx	gday
06:15	vlvx	what os do you girls use?
06:16	wasamasa	vlvx: /join ##windows
06:20	vlvx	oksu
06:26	oddcully	oh goody, clojuretv got updated
06:53	dstockto1	last week oddcully, still waiting for day 2
06:59	oddcully	dstockto1: seems i didn't got the memo. well cron ftw
07:28	tdammers	library/tooling question here
07:29	tdammers	I'm looking for a mocking library or framework that allows me to mock an SQL database at the query level
07:29	tdammers	is there a go-to thing for that?
07:42	rritoch	Whats the best way to load a clojure namespace from java? I called Namespace.findOrCreate(someNamespace) && then called invoke on Clojure.var(namespace,ifn) but I'm getting an illegal state exception because the function (namespace) was never loaded, though it should be available in the currentContextClassloader
07:45	rritoch	I believe I'm looking for the java equivalent of (require 'some-namespace)
08:06	puredanger	http://clojure.github.io/clojure/javadoc/clojure/java/api/Clojure.html
08:11	rritoch	puredanger: Thanks, but that's what I am using. I'm going to try "invoke
08:24	rritoch	Yay! It worked.
08:28	rritoch	https://github.com/rritoch/clj-osgi-namespaces > is now successfully calling a clojure "loader" by specifying the namespace in the bundle "Clojure-Activator" header, the activator must have start [ctx] and stop [ctx] functions similar to a regular java activator or else there will be some problems.
08:29	rritoch	No way to know yet if the "Clojure-Imports" and "Clojure-Exports" headers are working yet though.
08:33	TimMc	$mail arohner In your post "Why Clojure Is Awesome, Without Using the L-Word" I do think this line is a bit silly: "A person has identity, because they have a name." -- people's names change too. :-)
08:33	lazybot	Message saved.
08:39	rritoch	I uploaded the hello world app to > https://github.com/rritoch/clj-osgi-namespaces-hello-world which is 100% java free and executes with the help of the clj-osgi-namespaces bundle
09:04	aztak	wrong channel probably - but I'll try.. anyone using Spacemacs to hack Clojure and have the cider-debug stuff working? :)
09:05	aztak	I can instrument a method, but I can't act using the n,i,c etc. keys when a break-point gets activated. I suspect it's related to evil-bindings in Spacemacs.
09:06	luxbock	aztak: yeah you have to switch to emacs-state to use it
09:07	aztak	luxbock: really? you know if it's something that will be fixed or if it's something that can't be changed because of how cider is implemented?
09:07	luxbock	aztak: I believe there is an issue for it
09:07	luxbock	although it is for emacs lisp
09:08	aztak	luxbock: thanks for the info - I'll give it a try :)
09:08	luxbock	it is rather annoying so I've almost got my hands dirty a few times but everytime I get that itch I'm usually working on something else so never got around to it
09:08	aztak	C-z to enter emacs-state, and then ?? to switch back? :)
09:09	wasamasa	C-z again
09:10	aztak	ah, there's '\' to execute on cmd in emacs-state.
09:10	aztak	wasamasa: thanks!
09:10	wasamasa	aztak: spacemacs has a gitter channel for support
09:10	wasamasa	aztak: what you were asking for is part of evil as is, so I've answered it
09:11	aztak	wasamasa: I know - I posted the same question there an hour ago, but everyone seems to be sleeping right now grin
09:11	wasamasa	aztak: as for the specific issue with keys, perhaps you can make use of one my tweaks for edebug (which is what the cider debugger is modeled after)
09:11	wasamasa	aztak: https://github.com/wasamasa/dotemacs/blob/master/init.org#keymap-hacking
09:13	aztak	wasamasa: wow, that's a lot of good stuff there.. I'll bookmark that page - thanks :)
09:13	aztak	and the emacs-state switcharoo solved the issue with cider-debug. Thanks guys!
09:24	wasamasa	aztak: well, that's my emacs config
09:24	wasamasa	aztak: feel free to favourite it
10:06	rritoch	aztak: There are lots of updates to the osgi system I'm working on @ https://github.com/rritoch/clj-osgi-namespaces , The hello world app is functional, my next stage of development is to test the import/export functionality by using the exports of hello world in a hello-world-user bundle.
10:06	rritoch	Hmm, seems he's gone.
10:08	rritoch	Is it ok if I lazybot mail him?
10:32	rritoch	Anyhow, the imports and exports do seem to be working, it's time to send this off to the clojure mailing list so others can use (break) it. I'm sure the tickets will pile up on this one since OSGI itself isn't easy to use.
11:18	crocket	Is clojure ok for a command line utility that's executed every 5 minutes?
11:18	crocket	Not sure how I would write a command line utility with clojure.
11:19	justin_smith	crocket: -main will get any args provided to your uberjar
11:20	justin_smith	and stdin and stdout are straightforward enough (via in and out)
11:20	justin_smith	though for a repeated task you may want to consider just leaving the clj process running with a timed task
11:25	crocket	justin_smith, Does JVM not use a lot of memory for a simple DDNS client that updates DNS entires every 5 minutes?
11:26	crocket	It would consume at least 128MB after optimization.
11:27	justin_smith	crocket: the memory usage is another consideration. Just a nitpick: the memory usage is not the JVM's fault. It's 100% clojure's fault.
11:27	crocket	On the other hand, Gogs, written in Go, consumes 32MB of OS memory.
11:27	crocket	Gogs is ridiculously light.
11:27	justin_smith	Clojure is not optimized for memory usage, at all
11:28	crocket	I'd consider using pixie, but it is not mature enough yet.
11:28	crocket	It's not even ready for a simple DDNS client for home.
11:28	crocket	I'm stuck with a nodejs DDNS client I wrote a year ago.
11:29	crocket	justin_smith, What is clojure optimized for?
11:29	crocket	A large web application?
11:29	justin_smith	crocket: correctness, speed
11:29	justin_smith	those things are good for large web apps, sure.
11:29	crocket	For clojure to suit CLI apps, it needs to consume little memory and start up fast.
11:30	crocket	pixie fills that niche.
11:30	justin_smith	right, and clojure is not good at either of those things
11:30	crocket	Do you know pixie?
11:30	justin_smith	yes, I've played with it quite a bit
11:31	crocket	I plan to pick up Racket for that...
11:31	justin_smith	crocket: if you want a functional language that starts up fast and uses little RAM, OCaml is probably your best bet.
11:31	justin_smith	unless you start using the janestreet libs, but you don't need those
11:31	crocket	Janestreet is known for OCaml.
11:32	justin_smith	yes, and their libs are amazingly huge
11:32	crocket	It reflects their organizational structure.
11:32	crocket	What was the relevant law?
11:33	crocket	Right, conway's law
11:33	crocket	huge, slow, etc...
11:34	crocket	justin_smith, I wonder what I'll use clojure for in the future.
11:34	crocket	Probably some AIs
11:35	wasamasa	lol
11:35	wasamasa	work, really
11:37	rritoch	crocket: Why would you want to relaunch a java/clojure app at a certain interval? There is a lot of overhead to starting the JVM and you can just leave it running, in this case instead of a cron you would probably use a ExecutorService
11:40	crocket	rritoch, As I said above, a simple DDNS client in clojure would consume at least 128MB.
11:40	crocket	Gogs consumes 32MB.
11:41	justin_smith	crocket: sure, but none of us here are going to be able to fix that any time soon, and I don't think the heap usage is even on the agenda for the clojure.core dev team as something that needs fixing.
11:42	rritoch	crocket: 128MB is nothing, considering Firefox uses anywhere from 1GB to 2GB
11:42	crocket	rritoch, Except it's a simple DDNS client that should occupy less than 2MB.
11:43	crocket	My server doesn't run firefox.
11:43	justin_smith	if that's your constraint, then of course you can't use clojure, (unless maybe you port your node version to cljs?)
11:44	markmm	Are you running on embedded device or some memory constraint environment?
11:44	rritoch	crocket: Are you using leiningen?
11:44	crocket	rritoch, I usually do
11:44	crocket	markmm, no
11:45	crocket	But, I appreciate little memory usage.
11:45	justin_smith	crocket: lein should not be used at runtime, it's a dev/build tool
11:45	crocket	I appreciate how little memory Gogs consumes.
11:45	justin_smith	and not using it will reduce your ram usage and startup time quite a bit
11:45	wasamasa	markmm: he's in the trolling environment
11:45	crocket	It is fast and light.
11:45	crocket	justin_smith, I won't use lein in production.
11:45	rritoch	crocket: So try setting :jvm-opts ["-Xms:2m"] that should reduce JVM down to 2m on startup
11:46	justin_smith	but clojure simply doesn't fit in 2m
11:46	markmm	crocket: ok I see, try C then
11:46	rritoch	justin_smith: That's assuming your using all of clojure
11:46	wasamasa	markmm: to satisfy all of its constraints you must present a fast, functional, memory-cautious and elegant language which ideally spits out binary executables that start up fast and comes with loads of libraries and a wonderful community
11:46	rritoch	justin_smith: Either way, starting at 2m which is his goal, it will expand up if clojure really needs more space.
11:47	justin_smith	rritoch: if you are willing to accept the huge perf hit of the lazy-loading branch, you can do that I guess
11:47	wasamasa	markmm: I did get pretty close to that, but then they started an offtopic comment how they dislike design by committee
11:47	wasamasa	markmm: so I'm pretty sure it's just a troll
11:47	rritoch	justin_smith: I'm perfectly happy with a 128MB footprint, it's crocket who's looking for a micro-environment, and changing java options is one way to do that.
11:48	justin_smith	rritoch: but the way clojure operates (always loading it's full lang / compiler) undo any benefit that setting would give. Unless you use the lazy-loading branch and accept the degraded performance that goes with that.
11:49	markmm	wasamasa: Ah has this been going on a while
11:49	wasamasa	markmm: yeah, in other channels as well
11:50	wasamasa	markmm: including #emacs and #scheme
11:56	crocket	wasamasa, Are you a troll that trolls other trolls?
11:59	TimMc	crocket: The only solution is to write your own language.
11:59	crocket	It's weird
11:59	crocket	If I point out weakness of clojure in #clojure, it's considered trolling.
12:00	TimMc	This is how new languages get created, you know.
12:00	crocket	If I point out weakness of something in #something, it's also considered trolling.
12:00	crocket	TimMc, That's how pixie is being created as far as I know.
12:00	justin_smith	crocket: you can point out the weakness, then we acknowledge it... it's weird when the conversation is expected to continue? I mean what can we offer other than other languages you could use?
12:00	wasamasa	crocket: you could, like, accept that no language is perfect?
12:00	crocket	I know that no langauge is perfect.
12:01	crocket	I was just following through the conversation.
12:01	wasamasa	then just stop, it's getting tiring
12:02	crocket	The problem is that pointing out weakness of something seems to invalidate people's ego.
12:02	rritoch	justin_smith: Well, starting with "-Xms2m" my repl still uses 94M to 104M
12:03	justin_smith	rritoch: yeah, that was kind of what I meant. The small Xms is just going to slow startup, not prevent the repl from using more RAM. Is that a lein repl or a clojure.main repl btw?
12:03	wasamasa	crocket: it's like you've got nothing better to discuss than weaknesses of languages
12:03	rritoch	justin_smith: lein repl
12:04	crocket	wasamasa, That's your perception, but not my intention.
12:04	wasamasa	crocket: I have logs of you doing this for weeks
12:04	wasamasa	crocket: so, nope
12:04	crocket	wasamasa, What do you talk about on IRC?
12:04	rritoch	Bah
12:04	rritoch	NEVER trust the garbage collector!
12:05	crocket	The JVM garbage collector doesn't return memory to OS.
12:05	wasamasa	...
12:05	rritoch	Memory usage before garbage collection, 94M, after 101M, wtf
12:05	rritoch	That was running (System/gc)
12:06	wasamasa	crocket: why don't you just lurk and observe
12:06	wasamasa	crocket: like, most people on IRC
12:06	crocket	wasamasa, I do not commute to IRC to observe.
12:07	crocket	I observe when there are clearly things to learn.
12:07	justin_smith	rritoch: crocket: 75m for a non-lein clojure.core 1.7 repl
12:08	crocket	wasamasa, I think you're over-reacting.
12:08	rritoch	justin_smith: And after (System/gc)? lol
12:09	justin_smith	rritoch: also, remember that "lein repl" creates two processes, and you should be counting them both
12:09	justin_smith	rritoch: 93m after gc :)
12:10	crocket	Again, the garbage collector cleans up garbages inside JVM.
12:10	rritoch	justin_smith: Yeah, I'll never trust the garbage collector again.
12:10	crocket	JVM itself doesn't return memory to OS.
12:10	justin_smith	rritoch: the gc is optimized for runtim perf by default, not neccessarily minimizing heap usage
12:10	justin_smith	rritoch: it reorganizes things in memory so that future processing happens faster
12:10	justin_smith	even if that means using more RAM
12:10	crocket	If you want a runtime environment that returns memory to OS, JVM is not it, yet.
12:11	justin_smith	crocket: likely never will be. It's not a community proirity for the JVM or for Clojure.
12:11	crocket	I think server markets were the priority for Oracle.
12:13	crocket	wasamasa, I just wonder what you would get by observing conversations in any IRC channel for extended periods of time.
12:13	crocket	The profit lies in bidirectional communication.
12:14	justin_smith	crocket: well, Oracle is only the most recent owner of Java, but yeah, the Java project has been run by various companies that sell and support large complex systems with a lot of resources, and for a long time has been optimized for these sorts of environments
12:14	justin_smith	crocket: they are optimizing for the very common case where RAM chips are cheaper than the lost perf from using less RAM
12:14	crocket	I guess I'll keep learning languages.
12:15	justin_smith	as I mentioned before, OCaml does a great job of doing awesome perf, with low heap usage, in a sane functional language
12:15	crocket	justin_smith, That makes sense if your program always uses a lot of RAM most of the time.
12:15	wasamasa	justin_smith: that might be the case, but it's not enough to satisfy crocket
12:16	justin_smith	crocket: the point is that there are generic methods to speed up performance by using more RAM. The JVM exploits these
12:17	justin_smith	crocket: there are other methods that get speed by using less RAM, OCaml takes that approach more often
12:17	crocket	I think performance is more than just speed.
12:18	justin_smith	crocket: do tell
12:18	crocket	performance metrics include memory usage, speed, etc...
12:19	crocket	I think Racket and OCaml will just do fine for my small CLI scripts.
12:19	justin_smith	racket's pretty slow, but that likely doesn't matter for your use case, yeah.
12:20	crocket	Racket's still noticeably faster then python 3.
12:20	crocket	So, it still satisfies my performance requirements.
12:22	puredanger	it's almost like a single language can't satisfy every possible application
12:22	wasamasa	unbelievable, is it
12:22	chouser	puredanger: yet
12:22	puredanger	YET
12:22	chouser	:-)
12:22	wasamasa	not every language can look like clojure either
12:22	TimMc	crocket: You should use gherkin.
12:22	justin_smith	crocket: for comparison, I'm working on a corparate app that does large scale data crunching (working on the parallelizing / multi host part right now, using onyx). We really don't care how much RAM is used, but if we can make a task take only an hour instead of 7 hours to do a computation, that would be awesome.
12:22	crocket	TimMc, Why?
12:22	TimMc	Fast + parens.
12:22	wasamasa	lol
12:23	crocket	TimMc, Parens themselves do not interest me much.
12:23	TimMc	https://github.com/alandipert/gherkin
12:23	TimMc	You know what I mean.
12:23	wasamasa	TimMc: please don't troll back
12:23	markmm	crocket: You looked at Rust?
12:23	TimMc	Actually, I have no idea if it's fast, but it compiles to bash and that's not too shabby. :-P
12:24	crocket	markmm, yes
12:24	justin_smith	TimMc: depends what "fast" means - low startup time, sure, any sort of perf speed? not likely
12:24	markmm	crocket: It's supposed to be as fast as C++ and has nice modern features
12:25	markmm	crocket: I didn't like all the pointery stuff
12:25	crocket	markmm, I wouldn't use it over pixie.
12:25	crocket	I'm acutually waiting for pixie to satisfy my quick scripting needs.
12:25	justin_smith	crocket: what's pixie lacking then?
12:25	TimMc	Waiting is a good strategy.
12:26	crocket	justin_smith, pixie is still very experimental.
12:26	crocket	It doesn't even have a proper documentation.
12:26	crocket	It is a new language.
12:26	justin_smith	sounds like OCaml or Racket are you best bets then, yeah
12:26	crocket	I think it'll take 1-2 years for pixie to become useable for average programmers.
12:26	wasamasa	lol
12:27	crocket	Until then, pixie is for pioneers.
12:27	wasamasa	does it even have libraries?
12:27	wasamasa	or interop abilities with python?
12:27	justin_smith	wasamasa: it can use C libs directly
12:27	justin_smith	wasamasa: no, no python interop, only C / system interop
12:27	wasamasa	well then
12:27	justin_smith	there is no python at pixie runtime, it's only used to generate the vm
12:28	crocket	RPython was used to bootstrap pixie.
12:28	justin_smith	still is
12:28	justin_smith	unless pixie started self-hosting while I wasn't looking
12:28	crocket	Will pixie start self-hosting?
12:29	justin_smith	I doubt it
12:29	justin_smith	it's not on their list of goals at least
12:29	crocket	The main dev seemed to be fond of RPython.
12:29	wasamasa	https://github.com/pixie-lang/pixie/issues/338
12:29	wasamasa	why doesn't this surprise me at all
12:30	crocket	I still think PyPy tool chain is better than bootstraping on C.
12:30	crocket	or LLVM
12:30	crocket	wasamasa, You're very good at tracking other people's lives.
12:30	crocket	I dare you to be better than tracking my life.
12:31	crocket	wasamasa, You say I'm a troll, but your behaviors are more problematic than you think I am.
12:31	wasamasa	crocket: I click its issue tracker and see a ticket by you at the very top
12:32	xemdetia	that is an awful bug title
12:32	wasamasa	inorite
12:32	xemdetia	I have threatened physical violence at people for less
12:32	crocket	wasamasa, Is talking about personal behaviors your main topic on IRC?
12:33	crocket	issue is more than a list of bugs.
12:33	TimMc	Man, I'm just going to ignore the both of you. Don't care if you're trolls, just not interested.
12:34	crocket	wasamasa, If you keep pointing out my personal behaviors at every opportunity, I'll have to ignore you.
12:34	xemdetia	forgive me TimMc I am in a release stretch
12:34	xemdetia	my temper is about as cool as a volcano
12:37	wasamasa	\o/
12:37	uris77	is there a way to copy an sexp in emacs?
12:38	uris77	a keybinding?
12:38	TimMc	xemdetia: Haha, no worries! Smite away.
12:51	amalloy	uris77: you can select a sexp with C-M-SPC
12:51	amalloy	and then copy as usual with M-w
12:52	Bronsa	TimMc: ha, me too
12:52	Bronsa	I do C-M-k C-y
12:53	TimMc	C-y? I do C-/
12:53	TimMc	(it puts me back where I started)
12:54	Bronsa	oh, nice
12:54	TimMc	but really I should learn how to package this up into a single keybinding
12:57	uris77	amalloy: thank you
12:58	uris77	Bronsa: I don't want to cut-paste, but thank you. That is also handy :)
13:02	wasamasa	uris77: you could mark the sexp at point, then use M-w
13:03	TimMc	uris77: It's the same number of keystrokes. :-P
13:05	uris77	TinMc: yes
13:05	uris77	but I really wanted to copy, didn't want to cut
13:05	uris77	but thank you, I'll need to cut-paste too :)
13:05	justin_smith	uris77: in evil mode I can do it with "y%"
13:05	justin_smith	(inc evil)
13:05	lazybot	⇒ 0
13:05	justin_smith	haha
13:05	TimMc	It ends up on your clipboard either way... and it doesn't result in your buffer being any different afterwards...
13:06	uris77	TimMc: yes, you are right.
13:06	justin_smith	I think evil, as usual, wins the keybinding golf contest
13:07	uris77	it comes down to muscle memory. I'm trying to do it the 'Emacs Way' as much as possible. (I am a long time vim user)
13:07	justin_smith	uris77: long time emacser here, evil saves my wrists so much pain
13:08	wasamasa	uris77: the emacs way is writing your own crappy command for it
13:08	wasamasa	uris77: or rather, customizing generally (which includes using some other way of inputting it than a vanilla install would, including evil)
13:10	justin_smith	wasamasa: evil isn't crappy :P
13:10	wasamasa	justin_smith: I didn't write that
13:11	justin_smith	wasamasa: perhaps I was over-applying some transitive logic to your statements
13:11	wasamasa	justin_smith: tune down the aggressiveness of your inferer?
13:11	justin_smith	yeah, probably :)
13:11	uris77	your type inference is buggy
13:11	justin_smith	haha
13:11	xemdetia	I just abuse emacs keybindings to my function keys
13:12	xemdetia	so I can program like it's 1974
13:12	justin_smith	xemdetia: as if emacs was brand new, and vi doesn't exist yet, and most people are using line editors?
13:12	xemdetia	justin_smith, yes
13:13	xemdetia	but really I don't know why people don't use function keys for that class of moderately used commands
13:13	xemdetia	things like f10 for hide-show-toggle
13:13	xemdetia	is really nice
13:14	justin_smith	xemdetia: because they are so far from the home row (that's my excuse at least)
13:14	justin_smith	perhaps if my fingers were longer...
13:14	TimMc	You just need longer tentacles: http://fc04.deviantart.net/fs71/i/2011/029/8/3/emacs_user_at_work_by_earlcolour-d38aj2x.jpg
13:14	xemdetia	to be fair my hands are massive
13:15	justin_smith	(inc TimMc)
13:15	lazybot	⇒ 100
13:15	xemdetia	I have an external keyboard in front of my laptop and I can use the touchpad with the heels of my palms resting on the external keyboard below the space bar
13:15	TimMc	hha wow
13:16	xemdetia	I do have a slim external though compared to most
13:16	justin_smith	xemdetia: kinesis freestyle 2 (the one that's split in half) with a trackball in the middle of the two halves, with the two halves of the keyboard tented
13:17	xemdetia	justin_smith, belkin $10 special straight from a dumpster, glazed with two unique spills of coffee
13:17	justin_smith	TimMc: it's funny that the caption says emacs user, but the mug has a blender logo
13:17	justin_smith	xemdetia: sweet
13:19	xemdetia	but yeah I love my function keys
13:19	justin_smith	xemdetia: I have a half-baked 1/4 completed project that ties a midi controller to emacs
13:19	xemdetia	f3 for grep-find, f4 for neotree, f6 for magit status and f10 for hs
13:19	xemdetia	that I remember off the top of my head
13:20	justin_smith	xemdetia: so I can use things like my foot pedal board, or a drum pad controller for functions...
13:20	bja	I eventually gave up on function keys for space and space space as leader/localleader
13:20	xemdetia	justin_smith, I always hear of people trying to use foot pedals for things but I just can't figure out what key I would put on it
13:20	justin_smith	xemdetia: one example - a rocker pedal as absolute mode scroll bar
13:21	xemdetia	yeah but generally at that point I shift back to coffee/mouse interface and scroll
13:21	justin_smith	for evil, a footpad for escape, and another for :
13:21	justin_smith	xemdetia: foot pedals for control / alt / shift
13:21	justin_smith	like a clutch for emacs
13:22	justin_smith	this is all theoretical for now, maybe it's totally unusable :P
13:22	xemdetia	yeah but honestly compared to some people I really don't use that many extended key chords that not just using a finger to do it wouldn't be adequate
13:22	xemdetia	that's the use case I've struggled with
13:22	justin_smith	one of those "it's the weekend and I had way too much coffee and wouldn't this be neat" kind of things
13:22	xemdetia	yeah
13:22	xemdetia	I mean you have things like C-x v l for source control log
13:23	xemdetia	so you just hit the pedal for one key press?
13:23	xemdetia	my brain can't do that
13:25	blakew	Anyone using Wildfly? Or just me. =P
13:25	xemdetia	I feel like rigging up some sort of external pad for extra functions to slap and maybe a large lever for save would be more effective than a pedal and more appealing
13:26	justin_smith	I often talk about how awesome component is, but I just found another way it is awesome. I am adding onyx to my webapp, and by defining an alternate (optional) main namespace, I can use the same uberjar as used for the http server, with a different set of components, reusing the shared functionality and config. Win!
13:26	bja	blakew. I'm using undertow
13:26	bja	not full on wildfly though
13:27	justin_smith	xemdetia: sure, the midi thing would work the same with floor or table devices, the rest is just wiring up the bindings.
13:28	blakew	bja: Hmmm. I might check it out. I'm trying to debug a Widlfly situation and finding my Clojure WAR, when I deploy it, ends up with Wildfly routing 8080->8443 (and not working). Just trying to tease out what the problem is. (I've been deploying for a while.)
13:29	justin_smith	blakew: is this via immutant?
13:29	bja	blakew, I've been meaning to move to this: http://immutant.org/documentation/2.0.0-beta1/apidoc/immutant.web.html but am currently running via https://github.com/piranha/ring-undertow-adapter
13:30	blakew	justin_smith: Nah. I just lein ring uberwar my compojure app.
13:30	blakew	bja: Yeah, I'm planning to switch to immutant.
13:30	justin_smith	ahh, so just using it like it was any other app container, interesting
13:30	bja	fwiw, ring-undertow-adapter does seem to work well, but I'm deploying an uberjar proxied behind nginx
13:30	blakew	bja: Good to know.
13:31	blakew	justin_smith: Yeah, it's been working fine. But I've got an issue and have been trying to rollback to a working situation, and realize I don't know enough about Wildfly to know how to debug.
13:32	justin_smith	blakew: I never really got tomcat working reliably with hotswaps, and just gave in and restarted the app when redeploying. It felt like a defeat, but it worked.
13:32	justin_smith	not that immutant has the same issues, and for all I know the fix might have been simple but something I haven't tried yet
13:33	bja	heh, just checking my codebase and noticed my new-web-server constructor for my wildfly component has a docstring of "Creates an HTTP-Kit component with an injectable ring handler"
13:33	justin_smith	~comments
13:33	clojurebot	comments is http://www.cc.gatech.edu/computing/classes/cs2360/ghall/style/commenting.html
13:33	justin_smith	clojurebot: broken link, yo
13:33	clojurebot	excusez-moi
13:33	blakew	heh
13:34	blakew	justin_smith: We've been live-swapping with Wildfly for months without trouble.
13:35	justin_smith	nice!
13:36	jcrossley3	blakew: are you seeing the problem on a vanilla WF install? what version?
13:36	TimMc	justin_smith: Hmm, you think it was originally a joke about Blender?
13:37	blakew	jcrossley3: I was using clean Wildfly 8.2, then I tried 9. I'm not 100% sure what I'm using on my other servers.
13:37	justin_smith	TimMc: they do have crazy keybindings... but blender is also a tool that would be used to create an image like that regardless of the target of its mockery...
13:37	TimMc	haha
13:37	justin_smith	~blender \|is\| the emacs of 3d
13:37	clojurebot	Ik begrijp
13:37	TimMc	Or it could be... "OK, I need to put something on the mug, need a logo... here we go."
13:38	justin_smith	yeah
13:39	xemdetia	blender really is the emacs of 3d though
13:39	xemdetia	so much python doing all sorts of magic
13:39	justin_smith	and the wacky keybindings (though more chaining than chording I guess)
13:39	jcrossley3	blakew: not sure off the top of my head, but do you by chance have a security-constraint in your war's web.xml that might be triggering the reroute?
13:42	blakew	jcrossley3: Maybe. It's root and it looks like root ends up covered by the default.
13:43	blakew	Wait...could this be an upgraded lein thing?
13:44	jcrossley3	blakew: not sure, but maybe a later version is adding the security constraint to the web.xml it produces?
13:56	blakew	jcrossley3: Yeah, I think that's gotta be it.
13:56	jcrossley3	blakew: easy enough to check. remove the <security-constraint> :)
13:57	blakew	jcrossley3: Heh. Can I do that inside the WAR?
13:58	jcrossley3	blakew: well, unpack it, edit web.xml and repack. emacs makes that trivial, if you're using it.
13:59	blakew	jcrossley3: Dammit. If it's that, then how come I get it on old versions? They're all using the project.cljs used to create them previously, so they should work.
13:59	blakew	I guess the real question is what creates that web.xml?
14:01	jcrossley3	lein-ring, but it doesn't appear to add a security-constraint: https://github.com/weavejester/lein-ring/blob/master/src/leiningen/ring/war.clj#L103
14:02	jcrossley3	blakew: i would start by confirming you actually have one in your web.xml
14:02	blakew	jcrossley3: I do. And I've taken out and am trying to redploy.
14:06	blakew	Welp, that fixed it. So...now I just gotta figure out how I'm putting it in there.
14:07	clojer_	A Reagent app with :optimizations :advanced produces a 446Kb file containing React 13 minified but the Reagent code isn't minified. Are there any other settings I need to get the file size down?
14:18	justin_smith	clojer_: you may get a better answer on #clojurescript
14:21	dnolen	clojer_: doesn't really sounds plausible, what build tool?
14:59	seangrove	Anyone have a lobsters invite?
15:04	blakew	jcrossley3-away: OK, my web.xml is the thing with the security constraint. I've been using the same one for 5 months but now it's a problem. :-/
15:25	joschka	TL;DR can you look at my first clojure code and tell me what you think? http://sprunge.us/FLgK Hi there, I just began learning clojure and started by solving an easy to solve problem in clojure. I wrote most of the functions in a recursive manner, trying to stick to the functional coding style as close as possible. My question is: should I do this everywhere in clojure? Does this benefit performance or is it
15:25	joschka	generally better to write in a 'procedural' style?
15:27	amalloy	cfleming: the cursive plugin is refusing to load, saying the version i'm using has expired and i should download a new one. this seems like a crazy policy for a plugin to have, but i'm fairly sure you are not crazy so i would love it if you could tell me why this happens
15:29	justin_smith	joschka: in general we don't often write recursive code in clojure, we have nice higher level functions that wrap that sort of thing (reduce, map, iterate)
15:29	justin_smith	joschka: in particular, most code that is recursive and takes the rest of some seq at each step can likely be expressed as a map or reduce
15:30	amalloy	you also have this pattern repeated twice: (if x true (if y false z)), which is better written as (or x (and (not y) z))
15:30	joschka	thank you this kind of advice actually helps me a lot
15:31	justin_smith	joschka: additionally, the rare code that needs to be directly recursive should, if possible, use recur instead of self calls, clojure does not do self tail call optimization automatically, but only when explicitly invoked with recur
15:31	joschka	can you point me to any well written, easy to entry clojure project that could teach me a couple of good techniques?
15:32	amalloy	here is some code you should probably never write: (if (= 0 (count seq)) ...). if you are counting a seq, you can't process it lazily; and if you're counting it N times you are turning an O(N) algorithm into an O(N^2) one
15:32	justin_smith	joschka: 4clojure exercises introduce a bunch of good basics, and if you follow some of the more active users you will see good solutions
15:33	justin_smith	amalloy: joschka: yeah, in the same paste you have (empty? sq) which is the right way to do it
15:33	joschka	justin_smith: yeah, I probably recognized this myself later on in the process :P
15:36	blakew	So, I'm getting warnings because I defined a database namespace with an "update" command. Actually, I get two: The first apparently because I'm using monger.collection, and it has its own "update" function, then in myown.mongo, because it has an "update" function, too.
15:37	blakew	Thoughts? Bad form? OK because for everyone who uses them, it's always "alias/update"?
15:38	amalloy	it's a little tacky to share a name with a core function, but not a big problem. you should do so in a way that doesn't produce a warning, though, by managing your (ns) better
15:38	Bronsa	blakew: exclude update from :refer-clojure and don't refer to monger.collection
15:39	blakew	Bronsa: Is ":refer-clojure" implicit?
15:40	blakew	Bronsa: Also, I only refer to monger.collection with an alias. I mean, I do need the functionality, so I have "monger.collection :as mc" in a require. No :refer.
15:40	Bronsa	blakew: all of clojure.core is implicitly refer'ed, to avoid referring to one of its sym you have to use :refer-clojure, like so: (ns my-ns (:refer-clojure :exclude [update]))
15:41	justin_smith	blakew: you'll get that warning if monger.collection gets loaded. If you make a replacement that doesn't define "update" or at least uses an :exclude in the ns form I would use it :P
15:41	Bronsa	blakew: then it's possible that the warning comes from monger.collection itself, it probably defines update but doesn't exclude it from clojure.core.
15:42	Bronsa	blakew: update was added to clojure.core in 1.7, many libs defined their own without any need to exclude it, nothing you can do about it unfortunately
15:42	justin_smith	Bronsa: yeah, that is definitely the case (get the same warning in our app right now)
15:43	blakew	Bronsa, justin_smith: Aha...thanks.
15:46	blakew	I am finding some odd stuff with 1.7.
15:54	puredanger	if you're the first to find the duck wearing a hat, you get a star
16:26	blakew	I'd like a star.
16:28	blakew	I lost one when our chef died.
16:28	seangrove	"#clojure - where the chat is indistinguishable from markov bot chatter"
16:28	dmitrig01	justin_smith: instead of (def queen-indicator (first (seq ""))) you can do just (def queen-indicator \)
16:30	dmitrig01	justin_smith: also for valid?, you can do (defn valid? [[head & tail]] …), that way you save yourself from manually parsing that out
16:31	justin_smith	dmitrig01: you probably meant to direct those to joschka
16:31	dmitrig01	ack, you’re right :-)
16:31	dmitrig01	joschka: ^
16:31	joschka	dmitrig01: thanks :P
16:32	dmitrig01	(+ 1 x) is shorter as (inc x)
16:33	dmitrig01	(if (= 0 (count seq)) nil (col seq 0)) can be more concisely expressed as (when-not (empty? seq) (col seq 0))
16:33	joschka	dmitrig01: yes amalloy told me about that one :P
16:34	dmitrig01	empty? yes - but i’m pointing you to when-not as well :-)
16:34	amalloy	dmitrig01: that is much better written as (when (seq xs) (col xs 0))
16:34	amalloy	combining not and empty? is a sin
16:35	dmitrig01	ah, you’re right
16:35	dmitrig01	joschka: also for your (cond) inside pair-diag?, you can just use (or (= y1 y2) (= x1 x2) (= 1 (/ (abs (- x2 x1)) (abs (- y2 y1))))
16:36	joschka	yes probably better
16:40	Mongey_1	hey, am I supposed to require something to use rename-keys ?
16:40	dmitrig01	joschka: overall - nice work!
16:40	rasmusto_	Mongey_1: isn't it in clojure.set?
16:40	Mongey_1	I'm getting 'Unable to resolve symbol: rename-keys in this context'
16:40	rasmusto_	(for some strange reason)
16:41	dmitrig01	joschka: also an algorithmic question - colrow and rowcol end up with the same result, right?
16:41	joschka	dmitrig01: yes
16:41	dmitrig01	joschka: i might just pick one and stick to it then, no need to allow both :-) but that’s more of a personal pref, depends on yoru goals
16:43	dmitrig01	joschka: also any reason to use (list) instead of a vector?
16:43	joschka	yeah this happened during the process and was needed for some other steps that were deleted during the process
16:43	Mongey_1	I guess I'm just requiring it incorrectly
16:44	joschka	no reason at all, a purely naive choice :D
16:44	dmitrig01	ah. it’s almost always recommended to use vectors instead of lists
16:44	joschka	okay
16:44	dmitrig01	also! your addr-seq function can be expressed more concisely as just a map over the line-seq
16:44	dmitrig01	as far as i understand
16:45	dmitrig01	i know they were takling about that earlier :-)
16:45	dmitrig01	but it looks like a pretty textbook map to me
16:45	joschka	yes they did :>
16:46	joschka	In the future I am probably going to avoid writing recursive functions for every single problem and look at reduce, map iterate
16:47	amalloy	recursion is pretty standard for n-queens though, isn't it
16:52	joschka	sneaky 4clojure, teaching me the recursion again :> https://www.4clojure.com/problem/57
16:53	justin_smith	joschka: it gets to the other fun stuff too :)
16:53	justin_smith	joschka: also, after the first bunch, the difficulty isn't always in order
18:58	eriktjacobsen	Any ideas on why something like: (pmap (partial foo (first id-list) :param) array-list) works fine but (map #(pmap (partial foo % :param) array-list) id-list) just hangs, never goes into the fn and just sits there forever until ctrl-c?
18:59	justin_smith	eriktjacobsen: is id-list infinite?
18:59	eriktjacobsen	Nope, just 8 items, already realized / computed
19:00	eriktjacobsen	each of the 8 is about 200 strings with max length 40 char… (so pretty small)
19:01	amalloy	eriktjacobsen: are you typing exactly this expression into the repl, or using it in some larger expression? are you using the results of this map, or just doing it for side effects?
19:02	eriktjacobsen	Exactly this expression, so the results of the map should go into repl. the function “foo” hits a web REST api, so I am looking for it actually hit that. And the former (without the extra map) does hit just fine and runs all the results into the repl
19:03	eriktjacobsen	Not sure if it matters, but the function foo does exectute 6 separate request all in futures that are realized in the result.
19:03	eriktjacobsen	but doing the function foo in the pmap works fine one at a time, I just can’t get repl to iterate over it
19:09	monsta	Does anyone here had work with JavaFx8, I would like to know how can reload a scene after a make some change in the repl
19:16	justin_smith	eriktjacobsen: so instead of printing the result of the map, the repl just hangs?
19:16	justin_smith	eriktjacobsen: you could try running jstack on the jvm to see what all your threads are trying to do
19:24	eriktjacobsen	justin_smith: right. I have a println for instance as the first line in “foo”, and it never prints anything. doesn’t seem to be even running the inner map
19:26	eriktjacobsen	justin_smith: thanks will look into that. If have any guides on how to see what repl threads are trying to do that would be helpful, normally it takes a lot of effort to run jvm profilers including using jar directly (no repl) and some pause statements to get anything meaningful out, because otherwise its a bunch of clojure internals that dont seem to mean anything
20:11	joschka	why is ({:a 4 :b 5} :a) a function (PersistentArrayMap) and how may I find the documentation of that form?
20:17	tyler569	For some reason I'm struggling to find documentation for you, but essentially you can call things like maps as functions, pass a key as argument, and get the value at that key
20:17	tyler569	it just ends up being more convenient
20:18	tyler569	if your keys are keywords it works the other way too
20:18	tyler569	(:a {:a 5 :b 6}) will return 5
20:19	joschka	tyler569: nice, thank you!
20:20	joschka	in clojure there seem to be a lot of those convenient features :P
20:21	tyler569	it also works for maps ([3 8 2] 1) -> 8, sets (#{:a :b} :a) -> :a, while (#{:a :b} :c) -> nil
20:21	tyler569	and any seqable as far as I know
20:21	icedp	Why does partition-by doesn't work here instead of filter and remove? https://gist.github.com/9129621df3037383e8b8
20:49	justin_smith	icedp: ##(partition-by even? (range 10))
20:49	lazybot	⇒ ((0) (1) (2) (3) (4) (5) (6) (7) (8) (9))
20:49	justin_smith	icedp: that's different from filter/remove isn't it?
20:50	Cr8	,(partition-by #(quot % 3) (range 10))
20:51	clojurebot	((0 1 2) (3 4 5) (6 7 8) (9))
20:51	Cr8	,(partition-by identity "leeeerooooy")
20:51	clojurebot	((\l) (\e \e \e \e) (\r) (\o \o \o \o) (\y))
20:53	Cr8	icedp I think what you wanted was split-with?
20:53	Cr8	,(split-with #(< % 6) (range 10))
20:53	clojurebot	[(0 1 2 3 4 ...) (6 7 8 9)]
20:53	justin_smith	,(split-with even? (range 10))
20:53	clojurebot	[(0) (1 2 3 4 5 ...)]
20:53	justin_smith	Cr8: only works if the subseq is sorted already
20:54	justin_smith	and if it's sorted already, you're done :P
20:54	Cr8	ah, prolly aaaactually wanted split-at then
20:54	justin_smith	Cr8: there's no builtin that does what he wants
20:54	Cr8	,(split-at 6 (range 10))
20:54	clojurebot	[(0 1 2 3 4 ...) (6 7 8 9)]
20:54	icedp	,(let [f #(< % 5), xs (range 15)] (partition-by f xs))
20:54	clojurebot	((0 1 2 3 4) (5 6 7 8 9 ...))
20:54	justin_smith	Cr8: once again, only makes sense with a partially sorted input
20:55	icedp	,(let [f #(< % 5), xs (range 15)] (list (filter f xs) (remove f xs)))
20:55	clojurebot	((0 1 2 3 4) (5 6 7 8 9 ...))
20:55	Cr8	split-at doesn't look at the values at all -- which is what you actually want, i think?
20:55	justin_smith	icedp: ##(let [f #(< % 5), xs (shuffle (range 15))] (partition-by f xs)) ;; breaks on unsorted inputs
20:55	lazybot	⇒ ((8 9 14 12) (2 3) (7 6) (4) (10 11 5) (0 1) (13))
20:55	Cr8	its a qsort impl?
20:55	justin_smith	icedp: just use filter/remove
20:56	icedp	Cr8: yes
20:56	icedp	justin_smith: I just wonder why it doesn't work. maybe partition-by doesn't support some lazy-cat 'stuff'
20:56	justin_smith	,((juxt filter remove) (partial < 5) (shuffle (range 10)))
20:56	clojurebot	[(9 6 7 8) (3 4 5 1 2 ...)]
20:56	justin_smith	icedp: that's not how partition-by is meant to work
20:57	justin_smith	(juxt filter remove) is likely the most elegant result you'll get
20:57	icedp	interesting
20:57	justin_smith	icedp: partition-by splits the input at each change in value, but never re-orders input elements
20:58	icedp	ah, now I got it
20:59	icedp	,(partition-by (partial > 5) [1 2 3 2 1])
20:59	clojurebot	((1 2 3 2 1))
20:59	icedp	,(partition-by (partial > 5) [1 2 3 6 1 ])
20:59	clojurebot	((1 2 3) (6) (1))
21:03	icedp	,(vals (group-by (partial > 5) [1 2 3 6 1 ]))
21:03	clojurebot	([1 2 3 1] [6])
21:04	Cr8	the order those come out in could be either though
21:07	icedp	then I guess group-by and two get's. It's supposed to be faster then filtering two times filter + remove, right?
21:10	Cr8	,(let [p 5 in (shuffle (range 10))] (reduce (fn [[l g] i] (if (< i p) [(conj l i) g] [l (conj g i)])) [[] []] in))
21:10	clojurebot	[[0 1 2 3 4] [7 9 6 5 8]]
21:11	Cr8	not really using any clever built-in seq stuff, but if you want a single pass split-filter
21:14	icedp	I see, great
21:16	justin_smith	yeah, lazy-sort doesn't make a whole lot of sense anyway
21:26	weavejester	Does anyone happen to know why alter-var-root doesn't work with vars defined as part of a protocol, unless you explicitly use them as vars?
21:27	amalloy	weavejester: protocols do some nasty stuff to their vars
21:27	justin_smith	weavejester: when would alter-var-root work on something that isn't explicitly a var?
21:27	justin_smith	amalloy: oh, interesting, for the method slot logic I guess?
21:28	amalloy	i don't really know what you mean by method slot logic
21:28	amalloy	but it keeps information about implementations of the protocol function inside the var's metadata
21:28	justin_smith	amalloy: the protocol is backed by an interface that needs methods backed by the protocol methods, right?
21:28	amalloy	well it doesn't need them. you can choose to never use that interface
21:29	amalloy	weavejester: if the compiler detects that you are calling a function which is a protocol function, it emits code that, instead of calling the thing in the var, fiddles around with its metadata
21:29	weavejester	amalloy: I was afraid it would do something like that :)
21:32	dnolen	Bronsa: with the all various optimizations, cljs.tools.reader is within 3X of the JVM version under JavaScriptCore
21:33	dnolen	~130ms to read cljs.core on my desktop machine, not too shabby :)
21:33	clojurebot	Gabh mo leithscéal?
21:37	Bronsa	dnolen: wow, impressive. didn't know js performances were this close to jvm
21:38	dnolen	Bronsa: can probably get w/in 2X with some more work