#clojure log - May 07 2012

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0:10 technomancy: I have some cljs code where I try to call a constructor that takes an object, and I'm passing it a map. it gets compiled to a cljs.core.ObjMap.fromObject call, which bombs on "Error: No property strobj on this GObject StLabel"

0:10 any idea what's going on there?

0:18 Raynes: Dear ladies and gentleman of the night's watch: if you've ever tried typing a let on refheap and have any idea what I'm saying when I talk about an indentation bug, you'll be pleased to hear that it is now fixed. Carry on.

0:19 devn: technomancy: sounds familiar -- maybe you're requires for goog.* something or other?

0:20 technomancy: it reminds me of a problem requiring goog.string and/or goog.string.StringBuffer

0:20 technomancy: I'm not using any goog classes on purpose here

0:21 devn: technomancy: that's all i had handy, but it reminded me of when I took StringBuffer out of the mix because it seemed to be working fine without it, but chouser ran into trouble

0:21 (in core.cljs)

0:26 mmarczyk: technomancy: wild guess -- if that constructors loops over the properties of the object it is passed and assumes they correspond to its own properties of some sort, it could end up trying to set its nonexistent strobj property when passed an ObjMap

0:29 technomancy: I'm assuming by "passing it a map" you mean doing something like (Foo. {"asdf" 1}) in place of (Foo. (js-object "asdf" 1)) -- that simply won't work -- you'll need to write a map->obj function and perform a conversion *or* use js-object as above (the version which takes arguments is only available on master, though -- (doto (js-object) (aset ...)) in releases) *or* rely on ObjMap's strobj by extracting it from the map

0:29 (hacky, kludgey, to be avoided etc.)

0:29 technomancy: (btw, removing (.-strobj some-obj-map) kludges from TwitterBuzz made it quite a lot faster)

0:30 yoklov: mmarczyk: you mean js-obj, right?

0:30 technomancy: yeah, I was just trying an explicit strobj call

0:30 it looks like that does the trick

0:30 mmarczyk: yoklov: technomancy: yeah, thanks

0:30 technomancy: I don't care about speed here

0:31 mmarczyk: technomancy: incidentally, are you doing gnome gui scripting in cljs? :-)

0:31 technomancy: mmarczyk: trying to =)

0:31 mmarczyk: technomancy: cooooool 8-)

0:31 technomancy: mmarczyk: yeah, it's the first use I've had for Clojurescript

0:33 mmarczyk: technomancy: any chance at all you might consider blogging about the experience?

0:33 technomancy: I've been thinking about writing some X-related stuff in cljs, could use a nice intro :-)

0:33 technomancy: mmarczyk: I'll definitely post about it if I get it working

0:34 mmarczyk: technomancy: looking forward to it!

0:34 yoklov: it's easy to forget that javascript is a scripting language for so many things, can't wait to see where people using it for non-browser stuff goes

0:34 technomancy: gnome 3 has some problems, but it's the first "mainstream" desktop that "gets it" as far as user-level extensions

0:34 (FSVO mainstream)

0:35 muhoo: um, is there a select form element in noir?

0:36 oh, nm, i see, it's all in hiccup

0:36 i think

0:37 mmarczyk: really? well that's encouraging, might actually try it then

0:38 technomancy: I'm hoping as a first step to port devilspie to clojurescript

0:38 mmarczyk: I shouldn't be bothered much with any UI issues, I'll be replacing the WM first thing... but I hardly expected any benefit

0:38 technomancy: if that goes well possibly porting xmonad-type behaviour

0:38 shouldn't be too difficult; xmonad is only 1200 LOC =)

0:39 mmarczyk: :-)

0:39 muhoo: ah, it's called "drop-down", not select

0:40 mmarczyk: I was actually trying to decide whether I'd want to implement a WM in CLJS... on the one hand, that would be simply very cool and probably the most convenient WM configuration experience for me, on the other, I'd lose my no. 1 occasion to use Haskell :-P

0:40 yoklov: haha, i'm always upset when i have to touch my xmonad config

0:40 technomancy: the lack of runtime eval reeeeeeally sucks when writing something with dotfiles

0:40 yoklov: i always upset haskell's compiler

0:41 mmarczyk: well, I'm mostly bothered by Cabal

0:42 yoklov: oh, definitely

0:42 meiji11: I'm trying to create & manipulate a PersistentQueue in the REPL, but it just spits back a PersistentQueue object, when it should return a popped item. what is going on..

0:43 yoklov: but i feel like whenever i write a new function i manage to piss off the type system

0:43 mmarczyk: :-)

0:43 yoklov: meiji11: pop returns the new queue, peek returns the top item

0:44 err, wait, maybe first?

0:45 both work

0:46 Raynes: mmarczyk: Cabal is the best thing ever.

0:47 Obviously.

0:47 technomancy: Raynes: I thought mix was

0:47 Raynes: Mix is just leiningen 3.

0:47 technomancy: haha

0:52 mmarczyk: Raynes: if you believe only members of the Cabal should be allowed to build largish projects in Haskell, whereas the uninitiated should be prevented from doing so in such a way that they think they are being helped

0:55 meiji11: yoklov: right, just like with vectors.. duh. thanks.

0:57 yoklov: meiji11: yup, no problem!

1:11 technomancy: mmarczyk: what I've got so far, if you're curious: http://p.hagelb.org/syme.cljs.html

1:11 the individual functions work if I call them on their own, but put together as an extension for some reason it doesn't click

1:13 mmarczyk: looks very cool nevertheless

1:13 what compilation options are you using?

1:13 also, release or master cljs?

1:38 ivan: Windows users without SLIME/Swank might be interested in the new and improved https://github.com/alandipert/clj-swingrepl

1:38 (thanks to conhost being unusable)

3:08 mrphoebs: Hi guys, I'm n00b. I'm trying to integrate clojure into a java project. I'm using the "gen-class" function to generate classes. In the :methods vector how do I write the signature of a method whose return type is a list of strings eg ":method [ methodname [] <????> ]"

3:08 I'm a n00b*

3:13 hoeck1: mrphoebs: you need to use weird jvm array type literal, see http://stackoverflow.com/questions/2398478/declare-array-as-return-type-in-gen-class-method-declaration-in-clojure

3:14 mrphoebs: Thanks @hoeck1 that helps

3:15 hoeck1: mrphoebs: your're welcome :)

3:29 jondot: anyone here doing both clojure and erlang?

3:38 Raynes: jondot: I've done some Elixir, which is... at least an Erlang derivative.

3:39 jondot: Raynes, that's also interesting. i'm kinda wondering if to get into erlang. how mature is elixir?

3:42 Raynes: jondot: Admittedly not very. It's still in the "everything can change" state.

3:42 It's a fun language though. I know that the language author at least as some code in production in his company.

3:42 has*

3:45 jondot: i see

3:56 ivan: how do I use require inside a function/macro? I keep getting "RuntimeException: No such namespace: "

3:56 do I have to poke at namespaces manually?

4:00 I'm trying to write a function for my REPL :init that loads some libraries and does things

4:01 emezeske: ivan: (defn f [] (require 'clojure.string))

4:01 ivan: I'm pretty sure that works

4:02 ivan: I'm using :as, maybe that breaks things?

4:02 user=> (defn f [] (require 'cljs.repl) (repl/repl))

4:02 CompilerException java.lang.RuntimeException: No such namespace: repl, compiling:(NO_SOURCE_PATH:12)

4:03 emezeske: No, :as is fine

4:03 ivan: oh, I see what I did wrong above, let me try again

4:04 user=> (defn f [] (require '[cljs.repl :as repl]) (repl/repl (rhino/repl-env) :warn-on-undeclared true))

4:04 CompilerException java.lang.RuntimeException: No such namespace: repl, compiling:(NO_SOURCE_PATH:23)

4:04 emezeske: What is rhino/ ? Do you require that namespace?

4:05 ivan: yeah, I did; omitted in my paste

4:05 emezeske: Well, this works fine for me: (defn f [] (require '[clojure.string :as s]) (s/blank? ""))

4:06 So I'd be suspicious of the rhino/ before I was suspiciuos of the repl/

4:06 Err, it says repl

4:06 NM

4:06 ivan: user=> (defn x [] (require '[clojure.string :as s]) (s/blank? ""))

4:06 CompilerException java.lang.RuntimeException: No such namespace: s, compiling:(NO_SOURCE_PATH:4)

4:07 samrat1: what's the best way to run a single .clj file? (not a project, but just a script)

4:07 emezeske: ivan: I'm running against clojure 1.4, not sure if that makes a difference?

4:07 ivan: same. maybe my REPL env is messed up

4:07 emezeske: ivan: I dunno, but that seems very weird. Wish I could help more, but I'm stumped! :)

4:08 ivan: totally vanilla Clojure 1.3.0 REPL started with java -jar: user=> (defn x [] (require '[clojure.string :as s]) (s/blank? ""))

4:08 CompilerException java.lang.RuntimeException: No such namespace: s, compiling:(NO_SOURCE_PATH:1)

4:10 emezeske: ivan: Yeah, I restarted my REPL and saw that

4:11 ivan: I must have run f with just the require one time

4:11 ivan: yep

4:11 emezeske: don't listen to me! ^_^

4:12 ivan: So I think in your situation you might need to use (resolve)

4:12 ivan: Or maybe just use all fully-qualified names

4:12 ivan: fully-qualified names don't work either inside the function

4:12 I'll check out resolve, thanks

4:13 emezeske: ivan: This works on a fresh REPL for me: (defn f [] (require '[clojure.string]) ((resolve 'clojure.string/blank?) ""))

4:13 ivan: cool, thanks

4:13 emezeske: good luck, sir, I'm outta here! :)

4:17 ivan: that works because clojure.string/blank? is available without requiring :)

4:18 ivan__: ivan: damn i keep looking at the bottom window of limechat and seeing 'myself' talking....

4:18 ivan: I found a defmacro locally-using on the mailing list

4:19 ivan__: I see myself joining channels I'm already in

4:19 ivan__: heh

4:22 ivan: I wonder if I can do a different horrible thing: spawn a thread that requires the libraries that take 10 seconds to load

4:25 ivan__: ivan: seems like a good idea, although i have no idea how loading works in clojure

4:25 i would assume it would work though

4:27 ivan: On OSes with fork, it would be cool to automatically create zygote REPLs with everything loaded, then fork them when the user wants a REPL

4:27 (I hope the JVM will not complain)

4:33 is there some way to feed forms into an already-running REPL, so that the (require) is at run outside of a function?

4:34 alright, I'm just going to make a different :init for CLJS :)

4:40 michaelr525: hey

4:52 ivan: anyone else see EvaluatorException unterminated comment (goog/deps.js#1) with ClojureScript and Closure Library trunk?

4:52 seems that Rhino can't handle files that end with a /* block comment */

5:29 filed a Closure Library bug, hopefully they'll remove the block comment making Rhino break

5:31 calvados: is there clojure lib works with couchbase ?

5:33 forsakendaemon: I've just used clj-http...

5:46 robertstuttaford: i'm struggling with Korma. "CannotAcquireResourceException A ResourcePool could not acquire a resource from its primary factory or source." the details i've given to defdb work 100% with MySQLWorkbench

5:46 what can i try?

5:49 hoeck1: robertstuttaford: does a plain JDBC connection work?

5:50 kral: namaste

5:50 robertstuttaford: i've no idea. apologies, but i also have no idea how to try that. not a java person

5:50 found some code to try...

5:51 michaelr525: maybe try connecting with squirelsql, it's a java (jdbc) client to test your connection details under jdbc

6:01 robertstuttaford: straight jdbc works; i can query data

6:05 but when i switch back to korma and attempt a (select) i get the CannotAcquireResourceException

6:07 hoeck1: robertstuttaford: never used korma too, the CannotAcquireResourceException originates from the resource pool used by korma, c3p0

6:07 robertstuttaford: i hate problems like this. takes the wind out of my sails :-|

6:08 hoeck1: robertstuttaford: there should be some additional info or a wrapped exception,maybe paste the full stacktrace of your exception somewhere

6:08 robertstuttaford: I know, I know :)

6:10 robertstuttaford: ok, i used ccw's print-full-exception

6:10 wrapped exception is "Connections could not be acquired from the underlying database!"

6:10 i'm using precisely the same hash passed to jdbc directly and it's giving me this

6:14 michaelr525: maybe wrong driver?

6:15 robertstuttaford: i added (database nameofdatabase) to each (defentity) and now it works

6:15 docs say it automatically uses the last provided defdb, i guess not in my case!

6:16 michaelr525: oh

6:16 robertstuttaford: i think i'm also struggling with understanding what changes when i send the whole .clj file to ccw's repl

6:17 well, i'm up and away now :) -phew- thanks hoeck1 and michaelr525 for your help

6:21 michaelr525: something that annoys me is the one-compile-error-a-time thing

6:22 i'd rather have a list of all errors

6:47 err

6:48 any way in webnoir to get the part after "/n/" in a url like this: "http://localhost/n/10/20/30"? What comes after "/n/" can vary in the number of URI element.

6:49 for example it can also be

6:49 "http://localhost/n/1/2/3/4/5/6/7/8/8"

6:56 clgv: michaelr525: since that cant be a fixed route you probably have to catch all routes matching a given prefix and parse the rest yourself

6:56 faust45: hi guys

6:56 have a question

6:56 clgv: michaelr525: or is there regexp support?

6:57 faust45: how i can include to my project this lib http://commons.apache.org/fileupload/apidocs/index.html

6:57 clgv: faust45: you should just ask it ;)

6:57 faust45: [org.apache.commons/fileupload "1.2.1"]

6:57 not working

6:58 clgv: faust45: these are in the maven repo: http://search.maven.org/#search|ga|1|fileupload

6:58 faust45: sorry i don't familiar with java libs

6:58 so how i can use http://search.maven.org/#search%7Cga%7C1%7Cfileupload

6:58 clgv: faust45: hence [commons-fileupload "1.2.2"] should work

6:59 faust45: clgv: yes looks good ) thanks

7:00 cemerick: am I right that js-obj was broken until a couple of days ago?

7:00 faust45: clgv: but which name space i need to use in :import section ?

7:00 clgv: faust45: the javanamespace plus classname

7:01 faust45: clgv: (org.apache.commons.fileupload ServletFileUpload) ?

7:01 clgv: faust45: yeah, looks good if the class exists ^^

7:02 faust45: clgv: thanks

7:11 michaelr525: clgv: yeah regex did it :)

7:12 thanks

7:12 clgv: michaelr525: how does it look like now?

7:12 michaelr525: (defpage node [:get ["/n/:path" :path #".*"]] {:keys [path]}

7:12 hairy :)

7:13 clgv: ah ok. so it's supported within the routes :)

7:13 michaelr525: yup

7:14 i could also get it like this: (defpage node "/n/*" [& path]

7:15 but then path was a list with a vector inside it

7:16 clgv: michaelr525: humm (defpage node "/n/*" [& path] ..) should get only the vector in 'path

7:16 args that I meant: (defpage node "/n/*" [path] ..)

7:19 robertstuttaford: with korma, is it possible to define a has-one with a conditional to use when querying it? eg, say i have document has-many versions. i want to document has-one current-version and define the query for how to get just one version

7:19 kinda like active-record does it

7:42 faust45: how i can import javax.servlet.http.HttpServletRequest in my app?

7:44 clgv: faust45: the class?

7:44 faust45: clgv: yes

7:44 clgv: clgv: like the other java class before - it's always the same scheme

7:44 faust45: (:import javax.servlet.http.HttpServletRequest)

7:45 faust45: clgv: but (javax.servlet.http HttpServletRequest) not working

7:45 ClassNotFoundException

7:45 clgv: faust45: so either the namespace is false or you need a library for that class

7:45 faust45: clgv: did you know with lib?

7:46 clgv: no idea

7:47 michaelr525: faust45: what are you trying to do?

7:48 faust45: michaelr525: simple web server with handle file uploading

7:49 michaelr525: why aren't you using something like webnoir/ring/compojure?

7:49 the class you are looking for seems to come with a servlet container: http://www.jarfinder.com/index.php/java/info/javax.servlet.http.HttpServletRequest

7:50 faust45: michaelr525: just what make this by hands

7:51 michaelr525: if you are using leiningen you can try to add jetty to your project.clj

7:51 otherwise just throw it's jar in your classpath

7:51 faust45: michaelr525: but how i can include my project http://www.jarfinder.com/index.php/java/info/javax.servlet.http.HttpServletRequest ?

7:53 michaelr525: are you using leiningen?

7:55 faust45: check this https://github.com/mmcgrana/ring/blob/master/ring-jetty-adapter/project.clj

7:56 or this: https://github.com/mmcgrana/ring/blob/master/ring-servlet/project.clj

8:02 faust45: michaelr525: thanks!

8:03 robertstuttaford: any folks using korma here?

8:05 Borkdude: cemerick: I have a student with the same macbook air, he downloaded eclipse, installed leiningen+ccw, worked fine. I copied his entire eclipse folder to my machine

8:06 robertstuttaford: for some reason a (with thing) for a has-many association is coming up with [] instead of actual rows

8:06 Borkdude: cemerick: keep getting those wonky errors… https://gist.github.com/2627392 <- could it be a system global thing that is in the way and if so, where should I look? any clues?

8:06 robertstuttaford: using dry-run shows me sql that, when used in mysql console, works

8:07 cemerick: Borkdude: Try using the known-good eclipse from a dummy user account.

8:08 The errors you've gotten have changed, with presumably no clear reason. I've never seen any of them, and don't have any good theories at the moment.

8:08 Borkdude: cemerick: will try that

8:17 cemerick: it works under a dummy account!!

8:17 cemerick: now I still have to find out what could be troubling lein/ccw

8:17 cemerick: Borkdude: well, you're getting closer :-)

8:18 Try a new eclipse workspace (not in the dummy account)

8:23 Borkdude: have tried that, but will try again later, gtg now again (work)

8:23 cemerick: tnx so far

8:31 got a few minutes left

8:31 cemerick: no luck in new workspace with the known-good one, it must be something in my settings, global jars, or smth?

8:32 cemerick: could it be smith in my .m2 dir?

8:32 cemerick: known-good one + new workspace under my normal user account that is

8:34 cemerick: I can't imagine .m2 being involved.

8:35 Borkdude: In *your* copy of eclipse, uninstall all of ccw and the lein plugin. The re-install.

8:35 I'd almost hope that that wouldn't work. :-P

8:35 Borkdude: cemerick: tried it several times….

8:35 it must be something in my home environment, but what...

8:37 gtg now again

8:46 mmarczyk: has anybody encountered a "No such var: useful.utils/Adjoin" exception (apparently originating in protobuf.core, which does indeed refer to that protocol in this way) when using clojure-protobuf? it's driving me crazy atm :-(

8:50 clgv: mmarczyk: is using a previous release an option? maybe it's an inconsistent snapshot?

8:55 mmarczyk: clgv: hm, it might be an option

8:57 clgv: it's 0.6.0-beta16 though... also, the only version of useful on the classpath is the one depended on by protobuf. so, no idea what's going on :-/

9:02 kzar: I've been messing around with clojurescript one via inferior-lisp in Emacs and I've found that sometimes the repl gets in weird state whereby every time I try to eval something it just hangs until I abort. (It seems to happen when I've messed up somehow, problem is I can never seem to recover without killing the process and firing it up again.)

9:03 Also I've found the result of what I eval at the repl isn't always returned

9:07 mattfredwill: Anyone have any experience using clojure for (Simple) 3d game dev?

9:07 kzar: (If I eval 1 it's not returned to the repl, if I eval (+ 1 1) 2 _is_ returned.)

9:09 mattfredwill: clojure-games.org seems a little light on content so I'm wondering if its just a dead site or if clojure game dev is a bad idea

9:15 jwr7: The lack of a complete, stable and current Redis client library for Clojure is becoming a problem...

9:16 There is redis-clojure (recently brought back from the dead), clj-redis and accession, none of which are complete. I don't even know where to contribute :-)

9:35 robertstuttaford: cemerick: friend looks awesome! how plug-n-play is it for doing something like supporting a local-database signin along with facebook and twitter?

9:35 babilen: How can I test if a map is present in a collection? (Something like "(contains? [{:foo "bar"}] {:foo "bar"}) → true)

9:36 cemerick: robertstuttaford: once there's a library offering an oauth workflow for friend, then…very plug and play :-P

9:36 I'm idly evaluating the options in the oauth area this week.

9:36 rhc: babilen: maybe (== (select-keys my-map (keys smaller-map)) smaller-map)

9:36 robertstuttaford: ok, great. i want to use friend to secure my rest json api

9:36 fliebel: babilen: Like any value, using.. some unexpected name, like ony? or something, can;t remember

9:36 robertstuttaford: but the userbase already has direct and facebook accounts in it

9:38 fliebel: babilen: http://clojure.github.com/clojure/clojure.core-api.html#clojure.core/some

9:38 cemerick: robertstuttaford: yup, definitely working on it.

9:38 robertstuttaford: awesomesauce!

9:38 cemerick: Currently considering using scribe for the guts of the oauth impl.

9:38 fliebel: &(some #{{:a 1}} [1 2 {:a 1} {:a 2}])

9:38 lazybot: ⇒ {:a 1}

9:38 babilen: fliebel: Yeah, I found some, but I find it ... well ... ugly. Just wanted to see if there is a better solution. (fsvo better)

9:39 robertstuttaford: i've been reading the book non-stop. i can vaguely remember roughing out a design for some upcoming work in clojure in a dream last night. i might be a little too interested in clojure :)

9:39 babilen: fliebel: Thanks a lot! :) (/me thinks that contains? should work for that (just like it should work for lists, but meh))

9:40 fliebel: yea, it should..

9:40 &(contains? [{:a 1} {:a 2}] {:a 1})

9:40 lazybot: ⇒ false

9:41 babilen: &(contains? '(1 2 3) 1)

9:41 lazybot: ⇒ false

9:41 babilen: *shrug*

9:42 fliebel: huh

9:42 cemerick: robertstuttaford: I'm glad you're liking it. :-) Nothing wrong with enthusiasm, of course

9:43 jwr7: cemerick: your book is good. It's among the top-2 clojure books (alongside "The Joy of Clojure"). I should know, I own all Clojure books published so far :-)

9:44 fliebel: why on earth would that be...

9:45 cemerick: jwr7: Thanks :-D

9:45 foxdonut: jwr7: do you have programming clojure 2nd edition? if so, what do you think of it?

9:36 kzar: ,(.contains '(1 2 3 "babilen") 1)

9:36 clojurebot: true

9:37 dnolen: xb

9:37 oops

9:37 jwr7: foxdonut: I read the first edition, never looked closely at the second one. The first one was too basic for me, I couldn't find much in it. Also, I didn't like the choice of examples (a build system ...).

9:37 fliebel: kzar: ?

9:38 Ok, so contains? only tests for indexed things, like vectors, maps, etc.

9:38 ruturns false otherwise

9:38 &(contains? [:a :b :c] 2)

9:38 lazybot: ⇒ true

9:38 babilen: contains? is, well, horribly named

9:38 fliebel: yea

9:38 kzar: fliebel: contains? is for the key not value, so (contains? ["a" "b"] 0) would return true but (contains? ["a" "b"] 10) would return false

9:38 * jwr7 is still working on migrating from Clojure 1.2 (and monolithic contrib)

9:38 kzar: ,(contains? {:a 1} :a)

9:38 clojurebot: true

9:39 dnolen: jwr7: yeah the 1st edition of PC dates itself :)

9:39 fliebel: kzar: Yea, I figured that our, but what does the java method you use?

9:40 kzar: fliebel: I can't tell you so much about it, I just remembered it's often what you want instead

9:40 fliebel: I avoided contains? for so lang, I forgot why I avoided it.

9:40 babilen: I will probably never use it again :)

9:42 kzar: babilen: Yea I feel something like contains-key? and contains-value? would be better names

9:42 babilen: +1

9:42 fliebel: wow, you can use it to test the length of a string? ##(contains? "abc" 5)

9:42 lazybot: ⇒ false

9:42 fliebel: kzar: That's what the underlying java methods are called.

9:42 https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/RT.java#L698

9:43 * babilen wonders who came up with that name

9:43 kzar: fliebel: "... fools seldom differ." eh?

9:43 fliebel: kzar: Not familiar with that saying?

9:43 robertstuttaford: it's better than patrick :-)

9:55 echo-area: Had anyone ever seen "java.lang.ClassCastException: java.lang.Integer cannot be cast to clojure.lang.IFn" for expression (count {"k3" 467})?

9:55 What could be the reason?

9:56 It's Clojure 1.2

9:56 Is that a known bug?

9:58 fliebel: echo-area: Are you sure it's that?

9:58 I mean, if you enter that at the repl, it gives the same error?

9:58 echo-area: Yes, I'm 100% sure. I can't believe it.

9:58 jcromartie: ,(count {"k3" 467})

9:58 clojurebot: 1

9:59 mmarczyk: dnolen: hi! CLJS-241 looks extremely promising :-)

9:59 fliebel: ,*clojure-version*

9:59 clojurebot: {:interim true, :major 1, :minor 4, :incremental 0, :qualifier "master"}

9:59 echo-area: I'm using storm.

9:59 vijaykiran: echo-area: I can't reproduce it ..

9:59 echo-area: Well, I can't reproduce it in the repl too.

9:59 jcromartie: echo-area: I think you're mistaken

9:59 echo-area: But I compiled a uberjar and it can't pass that.

9:59 jcromartie: I wish I could have made any mistake.

10:00 fliebel: echo-area: What happens when your replace the count with prn ?

10:00 jcromartie: it's gotta be a loading issue or something else

10:00 echo-area: jcromartie: I've spent ~2 hours on this and finally tracked down to here.

10:00 jcromartie: echo-area: what is the full stack trace?

10:01 and if it *is* that code that's failing, then count is somehow scoped to an integer… (def count 1) (let [count …] …) etc. , but I wouldn't head down that path quite yet

10:03 echo-area: http://pastebin.com/9s0fPEJF

10:05 You can see that the first failure comes from (println (count (keys {"k3" 467})))

10:06 It's a literal map, but runs very strangely

10:08 Hmm, putting that expr outside the definition of `add-keywords' won't result in an error

10:10 dmi3y: Hi, everyone. I just wrote a small Clojure app which uses clj-http and htmlunit. I was surprised that the standalone jar of it ended up weighting ~13M. Is there a way I can trim it down?

10:10 echo-area: Why, it looks that the problem is along with the destruction.

10:10 If I don't use destruction but use (first ...) and (second ...), there won't be any error.

10:11 gf3: _ato: Ping?

10:12 kzar: With js/setTimeout in Clojurescript is it safe to recurse?

10:13 xeqi: echo-area: you're shadowing count in the destructoring

10:13 echo-area: Oh, why didn't I notice that. What a PIIIITTTTYYY... :'(

10:14 dakrone: dmi3y: if you aren't using any of the json stuff, you can exclude cheshire from clj-http and trim it down a little

10:14 echo-area: Forgot that Clojure is a Lisp-1....

10:15 dmi3y: dakrone: thanks

10:15 echo-area: xeqi: Thanks for pointing me that!

10:19 robertstuttaford: korma. have resource has-many resource-version. when selecting resource with resource-version, resource-version comes back as an empty vector. executing the dry-run sql manually correctly returns results for resource-version. what could i be doing wrong?

10:22 bubimir: How can I combine macros with type hints? For instance, why doesn't something like (defmacro get-first-byte [^bytes bs] `(aget ~bs 0)) help me avoid reflection?

10:23 nDuff: bubimir: you can put (with-meta) in your macro output

10:24 bubimir: ...re: why what you first tried doesn't work, the reader applies metadata directly to the macro definition, which doesn't get propagated when the macro is expanded

10:24 (if my own understanding is correct)

10:24 bubimir: Type hints are just metadata? (I'm new. :)

10:24 nDuff: bubimir: correct.

10:25 bubimir: Thanks! I'll look into that.

10:25 nDuff: bubimir: see also http://stackoverflow.com/questions/7754429/clojure-defmacro-loses-metadata

10:26 bubimir: Ahh, great! That helps lots.

10:31 robertstuttaford: does korma do any pluralisation of association names?

10:32 weird. if i stop telling the base model which fields to return, then the (with resource-version) starts working

10:33 ibdknox: ping

10:39 bubimir: Is "bytes" not a class name? I can use it as a hint (^bytes), but don't know how to use it with something like vary-meta. Clojure says "unable to resolve classname". When I ack for a (class <a byte array>), I get a strange "[B".

10:39 robertstuttaford: my korma issue: https://gist.github.com/2628135

10:40 clgv: bubimir: tag that "[B". thats java's strange naming^^

10:41 TimMc: &(.getCanonicalName (class (byte-array [])))

10:41 lazybot: ⇒ "byte[]"

10:41 TimMc: &(.getName (class (byte-array [])))

10:41 lazybot: ⇒ "[B"

10:42 bubimir: clgv and TimMc: Thanks! Using just "[B" seems to do the trick.

10:42 foxdonut: robertstuttaford: what if you have (fields :id :title :resource_version.version) ?

10:43 robertstuttaford: foxdonut: it complains that resource_version isn't in the table list for the query

10:43 rightly so resource has-MANY resource-version

10:43 pyninja: when I do (in-ns 'my.name.space), and then (use 'another.name.space), it says "java.lang.Exception: Unable to resolve symbol: use in this context". what am I doing wrong?

10:44 clgv: pyninja: thats because you went in a non-existing namespace which then was created on the fly but no (refer-clojure) was executed in it

10:45 robertstuttaford: just updated the gist to show the dry-runs for each case

10:45 nDuff: pyninja: ...any particular reason for using (in-ns) rather than (ns) there?

10:46 echo-area: Bye folks!

10:46 djpowell: hmm - i can't do jira...

10:46 how do you mark something 'ready to test'

10:46 robertstuttaford: foxdonut: i'm not going nuts, it should work the way i think it should, right?

10:46 foxdonut: robertstuttaford: what if you have (with resource_version ...) *before* (fields :id :title :resource_version.version) ?

10:47 pyninja: clgv: hm, but it should exist. it works fine if I do (use 'my.name.space) with the same namespace

10:47 clgv: pyninja: it exists after you did 'use since 'use is loading it ;)

10:47 pyninja: nDuff: i want to get inside an existing namespace, not declare a new one

10:47 robertstuttaford: foxdonut: that works. why?

10:47 kzar: dnolen: Is it safe to recurse with js/setTimeout? I wrote some code in a similar way to the example that you showed me but it slows down after a while

10:47 pyninja: clgv: no, if I start a new repl it still works

10:48 nDuff: pyninja: if you use (ns) with an existing namespace, it does just that.

10:48 clgv: pyninja: 'use loads namespaces 'in-ns does not

10:48 robertstuttaford: foxdonut: just figured it out, i think. :id wasn't in my field list before

10:48 pyninja: clgv: i declared the namespace in a file

10:48 wait, what does in-ns do then?

10:48 foxdonut: robertstuttaford: I just started looking at korma last night, so I'm no expert. But, looking at the docs, I'm guessing that the (with ...) coming first tells korma to join, and *then* (fields :resource_version.version) works.

10:49 clgv: switch to that ns and create it if it does not exist, i.e. was not loaded

10:49 robertstuttaford: i think korma relies on me to ensure that the join columns are present in the fields lists

10:51 foxdonut: robertstuttaford: I'm guessing that the order matters.

10:51 pyninja: clgv, nDuff: ns doesn't seem to work for me in that way either: https://gist.github.com/44014b4285e8f5400970

10:52 clgv: pyninja: do a (require 'my.ns) and then (in-ns 'my-ns)

10:53 pyninja: a IDE can support you there ;)

10:53 pyninja: clgv: ah, now I see! thanks

10:54 clgv: pyninja: fyi use = require + refer

11:05 robertstuttaford: newbie question: https://gist.github.com/2628257

11:08 clgv: robertstuttaford: ##(update-in [:resource_version 0] :version {:resource_version [{:version 351}], :id 1, :title "Partition"})

11:08 lazybot: java.lang.UnsupportedOperationException: nth not supported on this type: Keyword

11:08 clgv: oops

11:08 robertstuttaford: ##(update-in {:resource_version [{:version 351}], :id 1, :title "Partition"} [:resource_version 0] :version)

11:08 lazybot: ⇒ {:title "Partition", :id 1, :resource_version [351]}

11:08 robertstuttaford: update-in, thank you!

11:08 clgv: ah not entirely.

11:09 ##(update-in {:resource_version [{:version 351}], :id 1, :title "Partition"} [:resource_version] (comp :version first))

11:09 lazybot: ⇒ {:title "Partition", :id 1, :resource_version 351}

11:10 robertstuttaford: thank you clgv

11:13 can i use update_in to remove an element entirely?

11:13 so in this case, i want to remove :id

11:13 S11001001: robertstuttaford: no, use dissoc

11:14 clgv: robertstuttaford: use dissoc or select-keys

11:14 robertstuttaford: gotcha

11:15 nDuff: Hmm.\

11:15 robertstuttaford: this is more of a style question. i have (map #(update-in …) (korma query)). i could just wrap this all with another (map #(dissoc :id …)

11:15 TimMc: robertstuttaford: You can combine update-in with dissoc.

11:15 robertstuttaford: i guess i could put both #() into a comp as the function that maps?

11:15 * nDuff is surprised to see *ns* always be clojure.core while the -init fns for his genclass-generated classes are executed

11:17 robertstuttaford: this works: (map (comp #(update-in % [:resource_version] (comp :version first)) #(dissoc % :id)) (…korma…))

11:18 S11001001: nDuff: ns is set during module loading, not execution

11:19 faust45: can anyone suggest mime http parse lib?

11:25 nDuff: Hmm. I have a module in which I'm setting a value to an atom; however, when a new module requires the old one, that atom appears to get re-def'd over

11:26 (the resulting object has not just a different value [reinitialized to nil], but also a different memory location)

11:29 mmarczyk: nDuff: check if there's a :reload / :reload-all option on any of your requires and consider using defonce for the atom

11:40 nDuff: mmarczyk: no :reloads present, but using defonce does the Right Thing; thanks!

11:56 dnolen: lynaghk: ooh, is profile-cljs runnable?

11:57 kzar: cool my clojurescript drum machine is coming along

11:59 Borkdude: finally, solved….

12:06 ambrosebs: I'm trying to build my own version of clojure, but I can't seem to change the artifact name

12:06 is there some convention I need to follow?

12:09 johnkpaul: is there an equivalent to javascript's arguments.callee in clojure?

12:09 or something like recur but without being in the tail position

12:09 I have an let bound function that I am trying to make call itself

12:09 brainproxy: dnolen: is the idea with string-print in clojurescript that it prints a string with a newline automatically appended, or should it print the string as-is (i.e. no newline on the end)?

12:10 dnolen: the reasons I ask is that in nodejs.cljs that ships with clojurescript, string-print is pointing to node's sys.puts

12:10 but sys.puts is long since deprecated

12:11 and i'm wondering whether to point string-print instead to console.log (which appends a newline) or process.stdout.write (which doesn't append a newline)

12:11 foxdonut: johnkpaul: do you mean something like (fn foo [] (foo)) ?

12:11 dnolen: brainproxy: don't know that bit very well - but feel free to submit a ticket that suggests a fix.

12:11 brainproxy: as just let us know which lib to call.

12:11 johnkpaul: foxdonut: yes

12:12 I keep getting unable to resolve symbol: foo in this context

12:12 dnolen: johnkpaul: in Clojure or ClojureScript?

12:12 johnkpaul: clojure

12:12 foxdonut: johnkpaul: paste code in gist?

12:12 johnkpaul: :) decided that I need to learn clojure first

12:13 dnolen: johnkpaul: nice! :)

12:13 johnkpaul: sure foxdonut, one second

12:13 foxdonut: https://gist.github.com/9a675e94ef72b901210b

12:13 working through 4clojure.com

12:13 foxdonut: johnkpaul: try (fn fib [x] ...) instead

12:13 ambrosebs: nvm, I fixed my problem building clojure

12:14 johnkpaul: ah, great, thanks foxdonut!

12:14 found a different problem, but one that makes sense

12:14 damn needing all of those base cases

12:14 foxdonut: johnkpaul: you're welcome

12:27 lynaghk: dnolen: yep.

12:27 it's pretty janky right now, and there aren't any visualizations

12:27 dnolen: lynaghk: hmm having trouble getting it to work, when I try to open public/index.html I get a bunch of error about missing JS files.

12:27 lynaghk: also if you want to reset the timings, you'll have to open up the js console and remove the localstoage key yourself

12:27 did you run ./make.sh

12:28 dnolen: lynaghk: oops no

12:28 lynaghk: also your webserver needs to follow symlinks (I use the "serve" rubygem)

12:28 dnolen: readme, bro! =P

12:29 dnolen: lynaghk: yeah the ./make.sh wasn't highlighted as code so I missed it while scanning :)

12:30 lynaghk: k, I get a list of nils :)

12:31 lynaghk: dnolen: in the viewer? Hmm.

12:32 dnolen: lynaghk: oh I'm getting a microbenchmarks/seqs.js missing error in run.html

12:34 lynaghk: dnolen: that's through a symlink: how are you running the page?

12:34 dnolen: lynaghk: should that have been generated for me?

12:34 lynaghk: just open public/index.html

12:34 lynaghk: I guess I should open it via local web server?

12:35 lynaghk: I just tried it via file:// and it worked fine

12:35 let me clone and start from scratch.

12:37 dnolen: lynaghk: hmm I don't have a microbenchmarks folder, what creates that/

12:37 ?

12:39 brainproxy: dnolen: figured it out w/ ref to the cljs repl.. string-print is for printing strings w/o newline appended, println appends \n

12:39 lynaghk: ahh, forgot to check that in.

12:40 brainproxy: I'll submit an issue once I see how it works out w/ how I've set it up in ncljs's nodejs.js

12:40 *nodejs.cljs

12:40 lynaghk: dnolen: fix pushed, sorry about that. I have a bad habit of adding "pubilc/" to .gitignore and then adding a bunch of symlinks into public.

12:40 dnolen: brainproxy: cool, thx

12:42 lynaghk: cool! got it working, how do I reset the data? localStorage.clear()?

12:43 lynaghk: dnolen: awesome! you can reset with: localStorage.removeItem("timings")

12:43 dnolen: I'll add a button to the viewer later and then some datavis stuff. Going hiking today, so it'll be closer to Wednesday

12:43 dnolen: lynaghk: so I see a list of nils + count up + map inc

12:44 lynaghk: the nils should be timings. hmm.

12:44 what's in localStorage["timings"]?

12:45 dnolen: lynaghk: to a bit more clear, I see a list of nils at the very top of page

12:45 then map inc (6 5 5)

12:46 lynaghk: oh, so timings are working fine. Are you seeing the source code?

12:46 dnolen: er count up (6 5 5)

12:46 lynaghk: yes

12:47 lynaghk: in anycase, neat thanks for starting this. Will be very useful.

12:48 lynaghk: dnolen: oh, I see those nils too. Looks like something is throwing in empty objects

12:49 I'll figure it out and fixup. This isn't ready yet anyway; github giving away my secrets. =P

12:50 dnolen: yeah, ideally there'd be more infrastructure and persistence so we can actually compare different cljs compiler or cljs library revisions.

12:51 dnolen: lynaghk: haha

12:51 lynaghk: yes I'm keen for a community contributed set of benchmarks is all

12:52 lynaghk: a lot of what we do right now is ad hoc stuff at the command line

12:52 lynaghk: dnolen: well feel free to throw some more in and send me a pull request. The format is pretty general

12:52 clojurebot: Alles klar

12:53 lynaghk: dnolen: I was planning on having an optional :tags kwarg to the profile cmd so that once we have a ton of different microbenchmarks it'd be easy to search

12:54 gotta go hiking, catch you later dnolen.

12:54 dnolen: lynaghk: later

12:55 Raynes: "MUST. GO. HIKING."

13:12 jasonkolb: hey everyone... pretty new to Clojure and I'm struggling with the syntax for something I'm trying to port from Java, hoping someone can give me a pointer

13:13 (let [result (@id->result id)]

13:13 (cleanup id)

13:13 (log-debug "Returning DRPC result for " function " " args " at " (System/currentTimeMillis))

13:13 (if (instance? DRPCExecutionException result)

13:13 (throw result)

13:13 (let [strResult

13:13 (.toString

13:13 (.decode( result )

13:13 (.newDecoder (defaultCharset Charset)

13:13 )

13:13 )

13:13 ]

13:13 strResult

13:13 )

13:13 clgv: jasonkolb: first, use a paste next time. ~paste

13:14 ~paste

13:14 clojurebot: paste is http://refheap.com

13:14 jasonkolb: oops, sorry about that

13:14 clgv: secondly, you should state your problem ;)

13:15 mrakana: I don't understand definline. How exactly does it differ from a regular macro? When should I use it? If I want to create an alias for a function, is using definline better than just doing (def alias some-func)?

13:16 Using alias instead of some-func after (def alias some-func) seems to slow down things considerably.

13:16 clgv: mrakana: it's expanded if you call it directly but passed as a function if used as a parameter

13:16 foxdonut: jasonkolb: can you paste the Java code you are trying to port?

13:17 jasonkolb: https://www.refheap.com/paste/2630#L-1

13:17 https://www.refheap.com/paste/2630#L-2

13:17 https://www.refheap.com/paste/2630#L-3

13:17 https://www.refheap.com/paste/2630#L-4

13:17 https://www.refheap.com/paste/2630#L-5

13:17 https://www.refheap.com/paste/2630#L-6

13:17 https://www.refheap.com/paste/2630#L-7

13:17 https://www.refheap.com/paste/2630#L-8

13:17 https://www.refheap.com/paste/2630#L-9

13:17 https://www.refheap.com/paste/2630#L-10

13:17 (let [strResult

13:17 (.toString

13:17 (.decode( result )

13:17 (.newDecoder (defaultCharset Charset)

13:17 )

13:17 )

13:17 foxdonut: are you serious?

13:17 S11001001: er...

13:17 jasonkolb: was trying to do the right thing there with the paste from refheap

13:17 antares_: jasonkolb: just paste a URL, not the content

13:17 foxdonut: one link is enough :)

13:18 S11001001: str not tostring

13:18 jasonkolb: gotcha... my bad

13:18 foxdonut: jasonkolb: please paste your original Java code in refheap and put one link here

13:19 jasonkolb: ok, java code is at https://www.refheap.com/paste/2631

13:20 mrakana: clgv: I see. So it's something between a function and a macro. It also allows regular ^type hinting unlike a macro.

13:20 muhoo: question about dynamic bindings: i do a (binding [*foo* :bar] (somefunc)). that somefunc calls down a stack that eventually has stuff that does (:use [bar.baz :only [*foo*]]) in it. which *foo* gets used down in there? the one i bound or the original one?

13:21 i should say: the one bound with binding or the one use'd in the ns decl?

13:22 S11001001: muhoo: bindings don't exist in the ns mappings, so the latter

13:22 that is, you use a var, not a particular binding of it

13:22 muhoo: damn.

13:23 cmcbride: jasonkolb: to call a static method in clojure you do (defaultCharset/Charset)

13:23 muhoo: ok, thanks. i'll have to find another strategy then.

13:23 foxdonut: jasonkolb: perhaps (-> (.newDecoder (Charset/defaultCharset)) (.decode result) str)

13:24 jasonkolb: or perhaps (-> (Charset/defaultCharset) (.newDecoder) (.decode result) str)

13:24 jasonkolb: thanks foxdonut, I'll give that a try

13:24 antares_: jasonkolb: https://www.refheap.com/paste/2633

13:26 foxdonut: antares_: cool, didn't know you could use .something bare

13:27 antares_: but why doesn't .something work with map?

13:27 is it a macro-related thing?

13:28 antares_: foxdonut: it does if there is a method you are calling on IPersistentMap

13:28 .something is a Java method call

13:28 foxdonut: antares_: I mean why does (-> 5 .toString) work but (map .toString [4 2]) doesn't?

13:28 jasonkolb: that worked beautifully thanks foxdonut & antares_

13:29 antares_: foxdonut: because .toString is not a function, it's a special form

13:29 foxdonut: antares_: oic, and -> takes forms, while map takes a function, right..

13:29 jasonkolb: you're welcome

13:30 antares_: foxdonut: -> is a macro, it takes anything that can be evaluated at compile time

13:30 while map takes a function

13:31 foxdonut: antares_: I understand now.. thanks for the explanation

13:56 technomancy: so Leiningen honors the $CLASSPATH environment variable, but I have only ever heard of people using this by accident

13:56 would anyone be horrified if we just dropped it entirely?

13:56 you can still customize lein's classpath with pomegranate and the .lein-classpath file

13:57 joegallo: i would not be horrified, i think $CLASSPATH is basically a horrible idea.

13:58 but, then again, that probably means i'm not the target audience for $CLASSPATH ;)

13:58 technomancy: motion passes

13:58 Borkdude: technomancy: would this seem logical to you? is the profiles.clj not ok maybe? https://groups.google.com/forum/?fromgroups#!topic/clojuredev-users/-SnAC7g-vpI

14:00 fliebel: technomancy: I used it once, when i did some naughty things with dependencies that where not in maven.

14:00 technomancy: Borkdude: the swank-clojure version is wrong, but that's the only issue

14:01 oh shiiiiiiit--I got the new groups interface forced on me =(

14:01 Borkdude: technomancy: wrong as in?

14:01 technomancy: Borkdude: that version only works with lein1

14:02 you want lein-swank 1.4.2

14:02 Borkdude: apparently the eclipse leiningen plugin is based on lein2

14:03 technomancy: fliebel: another good reason to get rid of it! =)

14:04 fliebel: technomancy: Hah, only if you find a better alternative to RxTx.

14:05 technomancy: pretty sure that's been converted since samaaron switched to lein?

14:07 fliebel: technomancy: What do you mean? Sam did package a version of the thing, but with only half of the native deps.

14:08 technomancy: I wasn't following it too closely; could have missed some of the details

14:08 Borkdude: hmm, some other plugin must ruin leiningen/eclipse, when I change it to {:user {:plugins []}} it works

14:08 technomancy: anyway, preview4 will have an equivalent of mvn install:install-file

14:08 Borkdude: not if I change swank-clojure to 1.4.2 though

14:09 technomancy: not swank-clojure, lein-swank

14:10 Borkdude: ah fuck yes

14:11 gtrak: does there exist a good library for file operations?

14:12 something as handy as python's os.walk?

14:13 technomancy: no idea what that does, but it sounds somewhat like file-seq

14:13 (doc file-seq)

14:13 ,(doc file-seq)

14:13 ieure: Yes.

14:13 clojurebot: "([dir]); A tree seq on java.io.Files"

14:13 "([dir]); A tree seq on java.io.Files"

14:13 technomancy: oops

14:13 gtrak: ah, nice

14:15 ibdknox: gtrak: checkout fs by raynes

14:15 gtrak: https://github.com/Raynes/fs

14:15 for more features

14:15 gtrak: ah, neat

14:16 Borkdude: ok, with lein-swank 1.4.2 it now works correctly, so some other thing must have caused the error then

14:17 gtrak: ibdknox, that's very useful, thanks

14:17 uvtc: Updated my "brief beginner's guide" to use Lein 2 and Clojure 1.4.

14:17 http://www.unexpected-vortices.com/clojure/brief-beginners-guide/

14:17 XPherior: Can anyone point me towards an understanding on how to use lazy-seq without blowing the stack? Doesn't seem like you can recur from inside of that function, obviously.

14:18 amalloy: XPherior: mostly it Just Works

14:19 XPherior: amalloy: I must be doing something horribly wrong. Let me show you an example of what I tried, one sec.

14:19 amalloy: $google stackoverflow dbyrne prime sieve clojure

14:19 lazybot: [recursion - Recursive function causing a stack overflow - Stack ...] http://stackoverflow.com/questions/2946764/recursive-function-causing-a-stack-overflow

14:19 amalloy: is a good answer about the most common cause of problems

14:21 XPherior: https://gist.github.com/2629447

14:21 Borkdude: lein-noir 1.2.0 also seems to break it

14:21 XPherior: I've seen that question by the way, amalloy

14:21 amalloy: okay. your gist will never blow the stack

14:22 foxdonut: In a new Clojure project with an SQL database, what do people use to create the database schema? I've tried clojure.data.jdbc and lobos, both work but neither seems ideal. Would be nice to define the schema in code and have a safe "create schema only if it doesn't already exist" function to call on startup.

14:22 XPherior: amalloy: Wait. I swear it did last night. I mean, that was a quick rewrite.. But that was basically it.

14:23 foxdonut: Or should I just write the DDL in SQL, execute it on the database, and be done with it?

14:23 technomancy: foxdonut: I recommend writing it using SQL

14:23 TimMc: technomancy: How do you run the SQL?

14:23 xeqi: foxdonut: thats still an open area for clojure

14:23 technomancy: TimMc: finding a link; hang on

14:23 XPherior: amalloy: I guess I'm wrong. I'm not sure why it wasn't working last night. Thanks anyhow

14:23 amalloy: &(letfn [(inf-nums-from [n]  "A sequence of n to infinity."  (lazy-seq (cons n (inf-nums-from (inc n)))))] (nth (inf-nums-from 0) 500000))

14:23 lazybot: java.lang.RuntimeException: Unable to resolve symbol:    in this context

14:23 TimMc: I don't want to be in the business of SQL-parsing.

14:24 technomancy: foxdonut: I'm not sure how polished this is, but this seems like the right approach: https://github.com/weavejester/ragtime

14:24 amalloy: &(letfn [(inf-nums-from [n] (lazy-seq (cons n (inf-nums-from (inc n)))))] (nth (inf-nums-from 0) 500000))

14:24 lazybot: java.lang.RuntimeException: Unable to resolve symbol:   in this context

14:24 amalloy: wat. some copy-paste issue, i guess

14:24 XPherior: Yeah

14:24 &(letfn [(inf-nums-from [n] (lazy-seq (cons n (inf-nums-from (inc n)))))] (nth (inf-nums-from 0) 500000))

14:24 lazybot: java.lang.RuntimeException: Unable to resolve symbol: � in this context

14:25 XPherior: Hmmkay, I'm stumped.

14:25 amalloy: there's probably a non-breaking space character in there somewhere

14:26 muhoo: foxdonut: try korma?

14:26 solussd: using lein-marginalia, when I run 'lein marg' I get: an exception: Caused by: java.lang.IllegalAccessError: escape-html does not exist, every time. any ideas? The trace isn't very helpful- nothing in my code at least. :)

14:26 ieure: Has anyone gotten clj-logging-config / tools.logging to, like, actually work?

14:26 foxdonut: technomancy: thanks for the pointers, I'll have a closer look at Ragtime. I guess also just running the SQL on the database remains a decent solution.

14:27 ieure: Because no matter how I configure it, I don't seem to get anything but a NOPLogger.

14:27 foxdonut: muhoo: my understanding is korma doesn't support DDL

14:27 technomancy: foxdonut: most existing solutions try to do too much

14:28 ieure: e.x. (use 'clj-logging-config.log4j) (set-loggers! :root {:level :debug :out :console}) (log/debug "test")

14:28 -> I get nothing

14:28 technomancy: I don't think trying to pretend you can seamlessly switch migration code between different SQL implementations is ever going to work

14:29 TimMc: technomancy: This still doesn't answer the question of how to take a SQL file full of DDL statements and shove it into a DB.

14:30 technomancy: TimMc: did you see the ragtime link?

14:30 foxdonut: technomancy: I agree. It also depends on what you are doing, e.g. maintaining an application in production vs. distributing a standalone example that "just works on startup", etc.

14:30 TimMc: technomancy: I've seen it in the past...

14:31 duck1123: solussd: the recent version of hiccup renamed escape-html to h

14:31 TimMc: technomancy: Are you recommending that I split up my SQL schema file into a series of ragtime migrations? :-/

14:31 duck1123: escape-html is now in hiccup.util IIRC

14:31 solussd: duck1123: thanks!

14:32 technomancy: TimMc: honestly I haven't used a relational database in years, so I can't say whether ragtime covers all the bases. but it's on the right track compared to something like activerecord

14:32 XPherior: One more question. I saw Rich's talk about Simplicity at the Rails Conference.. I just don't understand why ORM's are complex. Maybe I've been doing it too long that I'm ignoring something

14:33 solussd: duck1123: now I wonder why marginalia isn't depending on the correct version of hiccup. :/

14:33 TimMc: technomancy: The specific issue I'm dealing with is that JDBC does not seem to have a way to take a SQL *script* and run it.

14:33 It can only take one DDL command at a time, as far as I've seen.

14:33 technomancy: TimMc: oh, I see. so the problem is that of delimiting commands?

14:33 TimMc: right

14:34 And every suggestion I've seen on the web so far is: Parse it yourself.

14:34 EW.

14:34 foxdonut: technomancy, TimMc: FWIW what we use now in a production Java app, is we have a series of plain SQL files and a tool that runs them in order. So we can modify the schema by adding a new file and the tool figures out which ones haven't been run yet. There is value in that IMHO.

14:34 amalloy: someone asked about that a month or two ago. i think the suggestion was "split-at ; lololol hope you don't have any semicolons in your data"

14:35 foxdonut: TimMc: and yes the tool allows for multiple statements within a single file.

14:35 duck1123: I seem to remember hearing that lein was going to get something akin to mvn's dependency:tree. Is that a plugin I'm missing, or is it best to just use mvn for now?

14:35 Borkdude: uvtc: tnx for your link, will read it later

14:35 uvtc: Borkdude, sure, y/w

14:35 ibdknox, thanks for the tip about Raynes/fs. Looks handy.

14:36 technomancy: amalloy: couldn't you just make up a delimiter?

14:36 amalloy: duck1123: lein2 deps :tree

14:36 uvtc: Though, I'm curious to know how I'm even able to use it...

14:36 I'm using lein 2, and have specified that one of my dependencies is org.clojure/clojure "1.4.0".

14:36 But fs appears to depend upon Clojure 1.3.0.

14:36 Borkdude: uvtc: gouda… is a city from Holland, but your name doesn't seem Dutch to me

14:36 gtrak: if you specify a dep in your project.clj, it'll override a transitive dep

14:36 uvtc, ^

14:36 amalloy: uvtc: dependency versions are basically mild preferences :P

14:37 uvtc: gtrak, "transitive dep"?

14:37 gtrak: yes, in maven-jargon, a dependency pulled in by a dependency

14:38 amalloy: technomancy: you could, although probably none exists that can't technically be a part of the SQL statement

14:38 foxdonut: technomancy, amalloy, TimMc: if it's just executing several SQL statements in a single SQL file with JDBC, one option is Spring: https://www.refheap.com/paste/2634

14:38 uvtc: gtrak, Ah. I see. Thanks. And thanks, amalloy. I'd have guessed that lein would pull in Clojure 1.3.0 into my local repository, but then maybe it wouldn't be used.

14:39 technomancy: amalloy: !

14:39 gtrak: speaking of which, why does lein need a lib/ folder at all? maven doesn't. I guess it's convenient though.

14:39 technomancy: gtrak: lein2 doesn't

14:39 amalloy: TimMc: what about having a migrations directory, with each file a separate statement?

14:39 gtrak: ah, neat

14:39 amalloy: heh, that's the one i was thinking of too, technomancy

14:40 technomancy: gtrak: it was initially there for compatibility with existing tooling which has since thankfully been abandoned

14:40 Borkdude: amalloy: lein2 reps :tree only shows a tree, but doesn't pull in reps?

14:40 technomancy: amalloy: big fan of the ol' page break

14:40 Borkdude: deps

14:40 fucking spelling correction, haven't found how I can turn it off by default

14:40 foxdonut: technomancy: anyway, perhaps Ragtime will be a good fit for what I need. I'll try it out. Thanks again.

14:40 amalloy: iunno

14:40 technomancy: Borkdude: it can't show the tree without walking the deps, which fetches them

14:40 uvtc: Borkdude, gouda, as in, the cheese. Also, it kinda' sounds like italian "gooda' docs, capiche?" (oh man)

14:41 Borkdude: uvtc: Gouda is the city where the cheese is from, some 50 km from here

14:41 gtrak: technomancy, deleting code is one of my favorite things, I understand :-)

14:49 TimMc: foxdonut: Is XML really needed to make JDBC do that?

14:54 foxdonut: TimMc: no, you could certainly do it in code instead. I was just offering the possibility of using JDBC to execute multiple SQL statements within a single file -- because I've had that frustration before and a home-grown solution with strange delimiters etc. isn't very nice.

14:56 achin: Am I doing something wrong, or does the repl in lein 2.0.0-preview3 only give you the top frame of a stacktrace?

14:56 nDuff: If I call (keys some-map) and (vals some-map), is it guaranteed that these will be serialized in the same order for all Clojure's map implementations?

14:57 technomancy: nDuff: it's guaranteed the order will be the same on the same map object

14:57 it's not guaranteed across serialization boundaries iirc

14:57 nDuff: *nod*, thanks

14:57 ivan: achin: that's how the normal REPL works too, no? (pst) prints the stack trace

14:58 achin: ivan: Maybe I'm remembering wrong, but I thought it printed out more than the last frame.

15:02 TimMc: achin: (pst) is the way to go, but (.printStackTrace *e) will give you the whole (ugly) thing.

15:02 achin: TimMc, ivan: Thanks.

15:05 amalloy: nDuff: it's guaranteed, and so you can rely upon it, but in my experience code that relies on it can generally be rewritten in a nicer way

15:08 TimMc: foxdonut: Cool, I'll check that out!

15:10 halarnold2000: &(+ 1 2)

15:10 lazybot: ⇒ 3

15:10 ivan: how do I load my own deps.js file in a ClojureScript REPL?

15:10 or perhaps before I start the REPL

15:15 foxdonut: TimMc: FWIW, the docs are here: http://static.springsource.org/spring/docs/current/spring-framework-reference/html/jdbc.html#d0e25689 and the Java API is here: http://static.springsource.org/spring/docs/current/javadoc-api/org/springframework/jdbc/datasource/init/package-summary.html

15:15 (it's Java so the links are really verbose ;)

15:17 creese: How do I do multi-line docstrings?

15:17 Raynes: Hit return.

15:18 uvtc: creese, You can have newlines in your docstrings.

15:20 * uvtc wonders why Python doesn't let you do that (but instead requires triple quotes for multi-line strings)

15:23 S11001001: uvtc: C

15:24 uvtc: S11001001, C?

15:24 S11001001: uvtc: for further evidence, eval ("hello, " "world") in python

15:25 Wild_Cat: uvtc: yeah, in Python, string literals are collapsed together, meaning you can write your strings as multiline by using parens.

15:26 ("hello" "world") == "helloworld"

15:26 S11001001: just like C

15:26 uvtc: Oh, right. :) "like C"

15:26 muhoo: has someone already written something that'll turn a flat list like {:foo.bar.baz 1, foo.bar.baz.quux 2} into a tree like {:foo {:bar {:baz 1 {:quux 2}}}} ?

15:26 Wild_Cat: and thanks to implicit line continuations, you can use parens to spread your string over multiple lines

15:27 however, note that ("hello " <newline> "world") == "hello world", not "hello \nworld"

15:29 uvtc: Wild_Cat, S11001001 : still though, as soon as I saw that Clojure strings could span multiple lines, I thought, "hey, wait a minute, why can't I do that in Python?"

15:29 Wild_Cat: uvtc: agreed, it is a weird choice to SyntaxError, especially when the parser supports triple-quoted strings.

15:30 OTOH, one thing I sorely miss in Clojure: Python's raw strings.

15:31 (it had me, in fact, running back to Python screaming last time I attempted to use Clojure, because it turned out there were a lot of literal backslashes in the stuff I had to do)

15:31 creese: I want to refer to java methods in documentation. I know in Ruby its class#method. What is best practice for java?

15:32 TimMc: &(str #"\backslash")

15:32 lazybot: ⇒ "\\backslash"

15:32 TimMc: Wild_Cat: ^ :-P

15:32 Wild_Cat: TimMc: isn't that a regex?

15:33 TimMc: Yeah, but then I extract the pattern string from it.

15:33 Wild_Cat: (or is that a new Clojure 1.4 thing I've missed?)

15:33 Bronsa: neat

15:33 TimMc: It's a dirty trick.

15:33 Wild_Cat: &(str #"\hello(")

15:33 lazybot: java.util.regex.PatternSyntaxException: Illegal/unsupported escape sequence near index 1\hello( ^

15:33 TimMc: I don't guarantee that it works on all inputs...

15:33 Wild_Cat: TimMc: yeah, that's what I thought ;)

15:33 it only works when your string is actually a valid regex

15:34 TimMc: &(str #"\Q\h\E")

15:34 lazybot: ⇒ "\\Q\\h\\E"

15:35 uvtc: creese, y'know, I'm not sure I've ever seen any other notation than the one you mention. It's been a while since I've looked at the PickAxe. You use the dot for instance methods, right?

15:35 creese: I want to know what it is for java. Ruby, I know.

15:36 Ruby is # for instance :: for class, I think, but neither is Ruby syntax.

15:36 uvtc: creese, Whoops. right right.

15:36 raek: I think . is more common in Java-land, but the javadoc syntax uses #, IIRC

15:37 duck1123: creese: does this help? http://docs.oracle.com/javase/7/docs/technotes/tools/windows/javadoc.html#see

15:37 Wild_Cat: TimMc: okay, so it works when your string is sort-of something that looks like a valid regex? Or do Java regexes auto-escape backslashes that aren't followed by a correct escaping char?

15:38 creese: duck1123: thanks

15:39 amalloy: muhoo: that is an impossible desire to fulfill, because baz cannot be both an integer and a map

15:42 TimMc: Wild_Cat: \Q and \E pairs allow raw stuff inside Java Patterns.

15:42 Anyway, yes -- we should have raw strings.

15:42 Wild_Cat: &(str #"\Qhello(\E")

15:42 lazybot: ⇒ "\\Qhello(\\E"

15:42 Wild_Cat: I see.

15:42 still, yeah. Thanks.

15:43 TimMc: &(java.util.regex.Pattern/quote "foo") ;; IIRC

15:43 lazybot: ⇒ "\\Qfoo\\E"

15:43 jwr7: Is there a Clojure-1.3/1.4 compatible continuation of clojure.contrib.lazy-xml? clojure.data.xml has a different interface and does not parse some of my files.

15:47 ivan: dnolen_: I've loaded my own deps.js into the rhino REPL via rhino/-eval, but when I do something like (ns mystuff (:require [cw.env :as env])) that form returns `nil`; then doing (env/someFunc) results in org.mozilla.javascript.EcmaError: ReferenceError: "cw" is not defined.

15:47 how should I debug that?

15:49 dnolen_: ivan: as far as I know, an ns form doesn't actually trigger loading of anything.

15:49 muhoo: amalloy: or something like that {:baz [1 {:quux 2}]}, etc

15:50 ivan: dnolen_: thanks, I guess have more work to do

15:50 jwr7: I have to say, the migration from Clojure 1.2+monolithic contrib to anything newer is a major disaster. I still haven't finished the work on our codebase. I hope nothing like this ever happens again.

15:50 dnolen_: ivan: I could be wrong about that of course. But I think ns forms get converted into goog.provide and goog.require

15:51 canweriotnow: has anyone else had issues with `lein repl` ignoring project.clj and not loading the project into the repl session?

15:51 dnolen_: ivan: in the browser those will work

15:51 ivan: okay

15:51 amalloy: muhoo: you also complect string-parsing with map-building; either task on its own is simple (and easy), and the two can be composed without any real trouble

15:51 dnolen_: ivan: but normally we are generating a single file, so goog.provide and goog.require get eliminated.

15:51 muhoo: jwr7: indeed, the problem with batteries included, is when the batteries go stale and start leaking acid all over the place

15:51 dnolen_: ivan: that said, the lack of a require and load at the REPL kinda stinks. Would be nice if someone worked on that.

15:52 muhoo: amalloy: ahhm, so splitting the strings into vectors does indeed get me more than halfway there, thanks

15:52 ivan: dnolen_: thanks, now I know it's missing

15:53 canweriotnow: I guess it might be a versioning thing? It *used* to load the project just fine, and now it doesn't.

15:53 muhoo: then a little assoc-in and i'm probably good

15:53 jwr7: muhoo: Well, I'm fine with change, but not too much at once. Changing Clojure and splitting monolithic contrib into modules would be fine, but some libraries were effectively abandoned and replaced with ones with a completely different API, functionality and problems.

15:54 amalloy: &((fn [paths] (reduce (fn [m [path value]] (assoc-in m `(~@path ::self) value)) {} paths)) '([(:foo :bar :baz) 1], [(:foo :bar :baz :quux) 2]))

15:54 lazybot: ⇒ {:foo {:bar {:baz {:quux {:clojure.core/self 2}, :clojure.core/self 1}}}}

15:54 amalloy: muhoo: this is the other half, more or less

15:58 muhoo: ooh, macro quoting, nice

15:58 TimMc: jwr7: The maintenance of the old libs was an illusion.

16:00 beffbernard: I'm dynamically building a string with the intention of evaluating it later.. but I'm not having any luck.. "userevents.thrift.TList$_Fields/values" where TList is a generated Thrift class and _Fields is a java Enum

16:01 jwr7: TimMc: yes, I realize that -- and I think overall this was a good decision. But I'm not happy about the fact that a) it was done together with the switch to 1.3 and b) some libs (lazy-xml in my case) were replaced with something different. As I write this I'm trying to find out why data.xml fails when parsing some XML documents...

16:02 beffbernard: So my desired output is I want to call the values method on _Fields

16:02 muhoo: when it comes to xml, i've had good luck with necessary-evil

16:02 jwr7: muhoo: I like the name already

16:03 muhoo: jwr7: https://github.com/brehaut/necessary-evil

16:04 jwr7: muhoo: ...but it's not what I need. I need a lazy XML parser, capable of dealing with huge data files. Ah well. I'll stop complaining now and go back to yak shaving.

16:04 muhoo: granted, i was dealing with RPC's, not files.

16:05 have fun. i'll take a break from dealing with openid :-) fun for everyone.

16:12 uvtc: muhoo, I like your comment about battery acid leaking out. Might have to quote you sometime. :)

16:14 Oh, just missed him.

16:14 $mail muhoo I like your comment about battery acid leaking out. Might have to quote you sometime. :)

16:14 lazybot: Message saved.

16:20 Raynes: I get chils when people use that feature.

16:20 chills even

16:21 uvtc: Raynes, I noted its use here: http://www.unexpected-vortices.com/clojure/brief-beginners-guide/getting-help.html .

16:22 If you've got any other choice lazybot tips, I'm all ears. :)

16:23 amalloy: is it worth noting how to coerce lazybot into giving a snarky answer??

16:23 lazybot: amalloy: What are you, crazy? Of course not!

16:23 gtrak: is there a way to make emacs not hang when I do something stupid? like printing a file-seq of thousands of files?

16:23 uvtc: lazybot, tell me your secrets!

16:23 lazybot is a tough nut to crack.

16:24 Raynes: uvtc: It also has a timer.

16:24 uvtc: A timer you say?

16:24 Raynes: $timer 0 0 5 Hi, uvtc

16:24 lazybot: Timer added.

16:25 Hi, uvtc

16:25 uvtc: Egads!

16:25 jwr7: gtrak: not that I know of. I once waited 2 days.

16:25 Raynes: That doesn't always work properly, unfortunately.

16:25 It sometimes gets times all wonky and amalloy is too lazy to fix it.

16:25 uvtc: Raynes, what are the first two integers for?

16:25 gtrak: jwr7, that's absurd :-)

16:25 Raynes: hours, days, seconds.

16:25 jwr7: gtrak: it's all relative and depends on the value of your unsaved changes :-)

16:25 amalloy: ...days

16:26 Raynes: Bahahahaha

16:26 Minutes.

16:26 Sorry, preoccupied.

16:26 gtrak: jwr7, maybe we need to make a slime-proxy

16:26 Raynes: amalloy: Maybe that's why the times are screwed up, minutes are days.

16:26 raek: Raynes: been using java.util.Date recently :-)

16:26 gtrak: swank-proxy, rather

16:27 jwr7: Unfortunately, these days most editors suck badly. Just try opening a 500MB XML file -- both Emacs and vim will take ages. With my 16 cores and 24GB of RAM I can't really see why.

16:28 gtrak: algorithms

16:28 felideon: jwr7: emacs is nice enough to warn you!

16:28 (dunno about vim)

16:28 jwr7: It recently took me a couple of minutes just to remove a trailing comma in a broken JSON file in vim. The file was 100MB or so. That's just sad.

16:28 felideon: yeah, unless you dump something in the repl :-/

16:29 felideon: ah right

16:29 C-c C-c a few times, q q q, pray.

16:33 amalloy: refusing to edit a 500MB text file is probably a protection for your sanity. nothing good can come of doing that

16:33 babilen: Is there a way in which I can use maps as keys in maps? (and get their values back? (e.g. (get {:a 1} {{:a 1} 0}))) Or do I have to use something else as key and "somehow" look up that identifier for every map that I want to use as key?

16:37 amalloy: that works fine. you're passing the args to get in the wrong order

16:40 babilen: amalloy: Wonderful (doh!) -- Guess I take a break now :)

16:43 S11001001: unfortunately clojure maps only work with strings, keywords, and typeglob references, of course

16:43 and integers < 28 bits

16:44 michaelr525: hello

16:45 ivan: S11001001: would be funny if people didn't have such low expectations

16:47 amalloy: S11001001: is that the state of things in CL or something? i don't recognize the language you're referring to

16:48 TimMc: amalloy: What's wrong with editing giant files?

16:49 ivan: some hex editors are good at editing giant files, they can even insert

16:49 S11001001: amalloy: perl5 hashes only support strings; CL hashtables support anything supported by eq, eql, equal, or equalp

16:49 TimMc: ivan: Oooh, good call.

16:50 gtrak: is teco good at large files?

16:50 S11001001: and php silly arrays support strings and numbers, and I think objects (compared and hashed by stringification, because that's what php *would* do)

16:51 Wild_Cat: S11001001: don't be so sure. PHP doesn't compare strings by stringification. :p

16:51 (if they sort of look like numbers)

16:53 S11001001: I'm glad I don't remember the exact details

16:53 php arrays are the worst things

16:53 * jonaskoelker bangs head against wall

16:53 jonaskoelker: how the ... do you guys parse stuff?

16:53 [sorry if I'm butting in]

16:54 Wild_Cat: PHP everything appears to have been carefully designed so as to be the worst possible design *and* implementation of the task at hand.

16:54 jonaskoelker: Wild_Cat: tell me more about the train wreck I've managed to avoid, please :)

16:55 Wild_Cat: jonaskoelker: eevee did it better than I can ever hope to: http://me.veekun.com/blog/2012/04/09/php-a-fractal-of-bad-design/

16:55 ivan: gtrak: don't know, but HxD (Windows) is

16:55 haven't looked at others

16:56 jonaskoelker: S11001001: so in pythonese, str(myob) == repr(myob) or else (myob == myob) == False ?

16:57 S11001001: jonaskoelker: no, I mean at the silly-array level; basic equality is a whole other mess

16:57 Wild_Cat: jonaskoelker: but the string thing comes down to this: if you're trying to compare two strings together and they look like numbers, PHP will parse them as numbers and compare the results, even if the conversion overflows. Meaning that if you compare 2 strings that are 2 huge, but different, numbers (bigger than can fit in a ... I think it's a 32-bit int), they can compare as equal.

16:58 ...all of this without a single error message, warning or anything else.

16:58 jonaskoelker: :O

16:58 teh fuque...

16:59 LauJensen: lol. I can't seem to find any corner of the internet where PHP shortcomings aren't discussed

17:00 TimMc: These are the stories the tribe tells its young in order to warn them from making the same mistakes.

17:02 jonaskoelker: "... and, reading between the lines, non-programs ..." :-)

17:02 I guess those don't not-crash

17:03 brehaut: im sure someone has a fast templating library that is halfway between enlive and hiccup, but i cant remember what its called

17:03 Wild_Cat: I suppose the point here was that it was initially a templating language, not the application programming language people perverted it as.

17:03 Raynes: brehaut: tinsel

17:04 brehaut: aha thanks

17:17 dnolen_: benchmark illustrating the benefit of the property + bit and implementation of satisfies? http://jsperf.com/direct-vs-chain/4

17:22 TimMc: Wild_Cat: And that is why my PL prof at NEU impressed upon us the importance of realizing when one is writing a nascent programming language.

17:24 ForSpareParts: Hey, how do you guys debug?

17:24 jonaskoelker: loudly, swearingly

17:24 ForSpareParts: I'm working in IDEA with La Clojure right now, and it won't stop on breakpoints...

17:25 janskoelker: (well, of course)

17:25 jonaskoelker: =)

17:25 I have yet to write anything not printf-debuggable

17:25 jlongster: dnolen_: vaguely related, if you ever want to see how well your js is JITed in Firefox, here's a cool addon: https://addons.mozilla.org/en-US/firefox/addon/jit-inspector/

17:26 emezeske: ForSpareParts, jonaskoelker: Yeah, println is my debug tool of choice

17:26 TimMc: (doto ... (println))

17:27 &(+ (doto 5 (println)) 6)

17:27 lazybot: ⇒ 5 11

17:27 gtrak: how would I get the substring of a string after the point where a regex matches?

17:27 getting the offset of the match would do the trick

17:28 ah, I see there's a lastIndexOf method on String

17:28 jonaskoelker: just about any character sequence is a method on String =)

17:30 ForSpareParts: emezeske: hm. I used to do print debugging, but I liked using breakpoints so much more...

17:31 emezeske: ForSpareParts: of course, to each his own

17:32 technomancy: I think for breakpoints you need either swank or counterclockwise

17:32 dnolen_: jlongster: not related - but do you ever run the FF jsshell directly?

17:32 technomancy: or maybe debug-repl works in other contexts?

17:34 jlongster: dnolen_: no, I use node for command line js, though I wish spidermonkey was used more!

17:34 dnolen_: mmarczyk: ping

17:35 jlongster: asking because I'm convinced the jsshell they distribute with the nightlies is not actually the latest js engine build.

17:35 muhoo: uvtc: heh, enjoy.

17:36 jlongster: dnolen_: how come? I'm not sure what its used for in the whole toolchain.

17:36 muhoo: [A

17:37 michaelr525: I have an uberjar jar which runs for an hour or a few and then stops for unknown reason without printing any exception...

17:38 Sounds familiar to anyone?

17:39 technomancy: michaelr525: it runs for an hour when generating the uberjar or running via java -jar?

17:39 michaelr525: java -jar

17:40 technomancy: oh, no idea then; sorry

17:40 michaelr525: :)

17:40 will have to fill it with printlns i guess\

17:41 nickmbailey: o893

17:42 oops, wrong channel

17:45 jonaskoelker: what do you guys use for generating parsers?

17:52 dnolen_: jlongster: it's crazy slow

17:52 jlongster: the js engine actually in the nightly seems fast

17:54 jlongster: dnolen_: hm, just looking at the docs for building the shell, and it has the --disable-optimize flag? It might be missing lots of optimizations, possibly even JIT?

17:55 wkmanire: Howdy folks.

17:55 dnolen_: jlongster: :P

17:55 jlongster: that doesn't make much sense to me.

17:56 jlongster: dnolen_: that's a very cursory glance :)

17:56 if you're really interested, I can poke some of the people who work on it

17:56 dnolen_: jlongster: that would be sweet!

17:57 jlongster: dnolen_: ok, I'll let you know what they say

17:57 dnolen_: jlongster: we do a lot of sanity checking / perf testing at the command line

18:01 jlongster: dnolen_: did you build jsshell yourself?

18:02 dnolen_: jlongster: I did not, though I could do that.

18:02 jlongster: just curious, so I give them some context

18:02 so you checked out a built version from Mozilla's hg repo?

18:02 dnolen_: jlongster: I just thought the prebuilt shells might be simpler since that's what Brendan directed me towards.

18:02 jlongster: yeah, makes sense

18:02 dnolen_: jlongster: the nightlies directory has prebuilt binaries I just grabbed a zip.

18:03 jlongster: dnolen_: do you have the URL handy so that I can show them exactly which one your using?

18:03 I'm not too familiar with it

18:04 dnolen_: jlongster: got it off ftp from here, ftp://ftp.mozilla.org/pub/firefox/nightly/latest-trunk

18:11 jlongster: dnolen_: are you running it with the flags "-m -n -a" ?

18:11 just relaying messages at this point, I don't have it handy to see what those are

18:11 oh, -m enables JaegarMonkey and -n enables type inference

18:12 dnolen_: jlongster: excellent that did the trick very helpful!

18:12 jlongster: woot!

18:13 dnolen_: jlongster: this is great, thanks much.

18:13 gtrak: hmm, this is unexpected, I guess because I'm used to java. how do I get a keySeq (the result from calling keys on a map) into a set efficiently, so I can perform an intersection on it?

18:13 jlongster: np! glad I could help. They said it should become the default at some point

18:17 gtrak: I guess into #{} might be alright

18:19 actually that's freaky-fast

18:22 intersecting 9k string keys from 2 maps takes 28 ms

18:22 the result is 9k, rather

18:22 tacoman: what do you guys use for auto-completion of Clojure in Emacs?

18:22 ForSpareParts: Would you guys mind looking at my attempt at a binary search tree?

18:22 http://pastebin.com/iu0s6XrY

18:23 adding crashes, it says it can't cast a long as an IFn

18:23 and I have no idea why

18:24 emezeske: ForSpareParts: Your if statement tries to call val as a function

18:24 ForSpareParts: OH

18:24 Oh, fuck, I see it now, thank you.

18:25 emezeske: ForSpareParts: very common mistake coming from an infix background.

18:25 * emezeske has done that a lot.

18:25 ForSpareParts: Thanks, that's a confidence booster : )

18:27 emezeske: :)

18:27 ForSpareParts: OK, so I fixed that -- now I've got "ArityException Wrong number of args (0) passed to: PersistentHashMap"

18:27 clojurebot: atacontrol cap ad0 | grep serial | awk '{print $3}'

18:28 ForSpareParts: I don't know where to look exactly -- it doesn't give me a line number. But I would have expected that to be caused by something like (:keyword), right?

18:29 emezeske: ForSpareParts: That's the error you'd see if you tried to e.g. ({:foo 42}) I think.

18:30 ForSpareParts: You might want to look for extra parens around things (hint)

18:31 ForSpareParts: Ah, ok.

18:33 TimMc: The wonderful thing about abstractions is that there are so many to choose from: https://www.refheap.com/paste/2640

18:33 Iterator not being Iterable is one of the more baffling things I have encountered in Java.

18:33 amalloy: TimMc: iterables are supposed to be iterable multiple times

18:34 iterators are mutable, use-once

18:34 ForSpareParts: emezeske: So, I've narrowed it down to something that happens after I recurse, which should mean that the problem is with (make-bst val)

18:34 but I can't get rid of those parens, I need them to make it a function call, right?

18:34 technomancy: amalloy: so really the fact that iterators exist in the first place is the WTF =)

18:34 TimMc: amalloy: I suppose in that case I should direct my bafflement at for loops not supporting Iterator

18:35 amalloy: ForSpareParts: too many parens

18:35 the one on line 11 is extraneous

18:36 ForSpareParts: Huh, ok. Thanks.

18:36 amalloy: (aside: is something still "extraneous" if it's breaking things? or does that word imply that it isn't causing a problem?)

18:36 ForSpareParts: Why is that? I thought that the entire function body had to be in parens?

18:37 amalloy: parens always mean "call this as a function/macro"

18:37 the function body tends to have parens around it, because you want to call something as a function

18:37 but you can't just put more in

18:37 antares_: dakrone: hey

18:37 ForSpareParts: I'd say your use of "extraneous" was spot on. It means something is unneeded or extra, but it could be causing a problem as well.

18:37 Also, that makes sense. Thank you.

18:39 ynniv: is there any sample code using noir or compojure and websockets?

18:40 weavejester: ynniv: Compojure is for HTTP routes, rather than websockets.

18:41 kovasb_: ynniv: https://github.com/andrewvc/noir-async

18:41 ynniv: I have a compojure app that I would like to add a websocket route to

18:41 weavejester: ynniv: I believe there's some code in Aleph for web sockets

18:43 ynniv: yes, the code that I have seen ends up using aleph

18:46 I've probably gotten lost in the abstractions. Can I use my existing compojure routes with aleph?

18:53 weavejester: ynniv: Hm… Maybe… Compojure is a routing libary built around Ring, but it might also work with Aleph, since it looks like the only difference is in the way the response is returned.

18:54 ynniv: sanity check: (noir (compojure (ring (jetty))))?

18:54 and it looks like aleph is ring-like

18:54 so (noir-async (compojure (aleph (netty))))?

18:54 weavejester: Yes. But websockets are not HTTP, and therefor not Ring.

18:54 ynniv: correct

18:54 weavejester: You effectively need Ring for your HTTP stuff, and Aleph for your websocket stuff.

18:55 Or noir-async might handle that for you.

18:55 ynniv: in the best case, I would have a server that fulfilled HTTP requests with ring and WebSockets with something else

18:55 ibdknox: aleph + compojure or noir works just fine

18:55 weavejester: It looks like there are wrap-ring-handler and wrap-aleph-handler for converting back and forth

18:56 So you can convert between the two protocols depending on the route.

18:56 ynniv: yes. but ring/jetty cannot handle websockets

18:56 so I need to swap that part with something else

18:56 ibdknox: ring is not tied to jetty

18:56 aleph = netty

18:57 ynniv: yes, but can ring wrap netty and do ws?

18:57 from what I can tell, aleph is ring applied to netty and ws

18:59 weavejester: ynniv: It looks like there is middleware to convert back and forth between the Aleph style and Ring.

18:59 https://github.com/ztellman/aleph/wiki/HTTP

19:00 Let me see if I can come up with a small example....

19:01 jonaskoelker: have anyone done any parsing in clojure?

19:02 brehaut: yes, but any advice i have is now out of date

19:02 jonaskoelker: :|

19:02 know of any good parser generators?

19:03 ynniv: i last used https://github.com/joshua-choi/fnparse

19:03 the output was kind of slow, but that might have been an artifact of a poor grammar

19:04 brehaut: last i looked fnparse was not compatible with clj 1.3+

19:04 antares_: jonaskoelker: I am afraid all clojure-specific parser generators are a bit out of date. I used Ragel and ANTLR to produce a Java parser that produces Clojure data structures, it was pretty straightforward.

19:04 weavejester: Hm, actually an example might mean I'll need to try a few things out first...

19:04 brehaut: theres parsley

19:04 ynniv: brehaut: that wouldn't surprise me (clj 1.3)

19:05 jonaskoelker: brehaut: I can confirm that incompatibility

19:05 antares_: can you share the code?

19:06 ynniv: weavejester: My compojure routes are ultimately a ring handler, correct? Perhaps it is as simple as wrapping those routes and adding my WebSocket route.

19:06 antares_: jonaskoelker: here is one: https://github.com/michaelklishin/crawlista/blob/master/src/rl/clojurewerkz/crawlista/robots/Parser.rl

19:07 weavejester: ynniv: Effectively yes. I just don't know if you can use GET etc. with Aleph or if you need to create a handler function manually.

19:07 ynniv: ok. It's a place to start

19:07 antares_: jonaskoelker: I wouldn't call it a great example of a Ragel parser but it demonstrates how you can easily build Clojure data structures in a Java parser. I prefer ANTLR to Ragel because it has ANTLWorks (a small IDE)

19:09 jonaskoelker: antares_: yeah, I think I'll go with ANTLR, though the documentation seems sparse -.- ; but thanks, I'll study the building of clojure data in java

19:10 ynniv: Unrelated, the velocity of the clojure community is amazing. I'm still wary of the JVM (exceptions, tail calls, bloat), but it's difficult to ignore the energy of the community.

19:12 jonaskoelker: I find it a non-hassle to use loop/recur, fwiw

19:12 how's exceptions and bloat a problem in your eyes?

19:12 bloat = huge memory consumption?

19:13 ynniv: yes. I can run racket on a 64MB embedded ARM

19:13 jonaskoelker: racket?

19:13 ynniv: and every time I see a stack trace I die a little

19:13 mzscheme

19:13 jonaskoelker: ah

19:13 oh yeah

19:13 ynniv: but stack traces are often the only useful part of an exception

19:13 jonaskoelker: java.foo.indirectMethodOne -> java.foo.indirectMethodTwo -> java.bar.deepNestingThree -> ...

19:13 ynniv: you really need handlers to do something useful when odd things happen

19:14 jonaskoelker: ~= callbacks?

19:14 clojurebot: No entiendo

19:14 technomancy: leiningen runs on a beaglebox =)

19:14 jonaskoelker: (I'm new/intermediate to lisp; is `handler' a ... keywordish?)

19:15 ynniv: how much RAM?

19:15 clj_guest_002: so javascript has it's document model; is there anyway in java to create GUIs with something like that

19:15 antares_: jonaskoelker: I happen to have 2 books from ANTLR author, one of them on ANTLR :)

19:15 clj_guest_002: rather than stacking guilayout on top of guilayouts ?

19:15 technomancy: ynniv: not sure. 64MB might be enough for leiningen, but not if it needs to share with the OS =)

19:15 jonaskoelker: antares_: lucky you. Can you fax it? =)

19:15 ynniv: well, there wasn't a whole lot of room for racket either :)

19:16 but it compiled and ran on a soft-float system

19:16 technomancy: ynniv: but UTF-16 suuuuucks; it's true

19:16 antares_: jonaskoelker: I can give you a link to it :) http://pragprog.com/book/tpantlr/the-definitive-antlr-reference

19:16 technomancy: it's better than not having the language specify an encoding (cough; ruby), but it's bad.

19:17 ynniv: jonaskoelker: try http://www.gigamonkeys.com/book/beyond-exception-handling-conditions-and-restarts.html

19:17 jonaskoelker: antares_: but it's like (iterate dec *account-balance*) :-(

19:18 ynniv: instead of being a backstop for an unwinding stack, they let you change state and resume

19:18 antares_: jonaskoelker: `handler` is OK to use but if you want a local name to use for a handler fn, f (for function) is quite common

19:18 jonaskoelker: there are alternative ways to acquire it, lets put it that way. I do not encourage them but it's ultimately up to you :)

19:21 jonaskoelker: hm; I should probably read up on CL's condition system. I hear good things about it

19:23 ynniv: it's one of the few things missing from clojure

19:23 technomancy: ynniv: it's been implemented

19:23 jonaskoelker: that and a parser generator =)

19:23 technomancy: but nobody uses it

19:24 ynniv: technomancy: do you have more info?

19:24 jonaskoelker: neocons??

19:24 lazybot: jonaskoelker: Definitely not.

19:24 jonaskoelker: -.-

19:25 technomancy: ynniv: it's called error-kit

19:25 foxdonut: weavejester: was looking at Ragtime earlier. Quick question: although all the pieces are already there, there doesn't seem to be a single point of entry to run a series of migrations but checking the database to see which ones have already been executed. Am I missing something?

19:25 technomancy: you were right, Ragtime is a nice option.

19:25 technomancy: good! =)

19:26 weavejester: foxdonut: I believe that's the "apply-new" strategy.

19:27 jonaskoelker: (into 'bed /me)

19:27 weavejester: foxdonut: So: (migrate-all migrations strategy/apply-new)

19:28 foxdonut: weavejester: as my 5-year-old daughter would say, "sweeeet!" Thank you!

19:28 weavejester: foxdonut: Take a look at: https://github.com/weavejester/ragtime/blob/master/ragtime.core/src/ragtime/strategy.clj

19:29 foxdonut: That lists the three different ways migrations can be applied. If you can think of any more, let me know :)

19:29 foxdonut: weavejester: excellent. I'm pretty sure apply-new is what I'm looking for. thanks again--much appreciated.

19:32 weavejester: the other part I am having trouble with, but this is likely my not knowing clojure syntax for protocols.. how do I do (def db (ragtime.sql.database.SqlDatabase. {:classname .. :subprotocol ..})) instead of each parameter as separate args?

19:32 also I can't seem to be able to require or use SqlDatabase to use (SqlDatabase. ...), only able to use fully qualified name

19:33 weavejester: foxdonut: If you're using Clojure 1.3 or above, records create two functions: ->SqlDatabase and map->SqlDatabase

19:34 foxdonut: You'd want (map->SqlDatabase {:classname … :subprotocol …})

19:35 foxdonut: Only the ->Record or map->Record functions are created with the namespace. If you want to use the record as a class, e.g. using Record., then you need to import it. But ->Record or map->Record should probably be preferred.

19:35 ynniv: technomancy: I think that I saw error-kit before. Not sure if I forgot about it because it doesn't get much use, or because most of my exceptions come out of Java libs.

19:35 foxdonut: weavejester: nice, let me try it out..

19:40 weavejester: the protocol syntax works, but the apply-new strategy doesn't seem to work as I expect.. meaning if I call it on every webapp startup, first time it runs the migrations, the second time I expect it not to try to run them again.. but it runs them again and fails with "table already exists"

19:43 weavejester: perhaps an error on my part.. here's what I'm trying: https://www.refheap.com/paste/2643

19:45 weavejester: foxdonut: Hm...

19:45 foxdonut: What does the content of the ragtime_migrations table look like?

19:46 foxdonut: weavejester: create-bookmark-table|1336433877972

19:47 weavejester: foxdonut: What happens if you call (applied-migrations sql-db) ?

19:48 symbole: Does Clojure have a set of unit tests for its conrrency abstractions?

19:48 foxdonut: weavejester: bookmarksite.server=> (applied-migrations sql-db) => (nil)

19:50 weavejester: foxdonut: Try calling (remember-migration migration-create-bookmark-table)

19:51 foxdonut: Ragtime's a work in progress, so it's not as smooth as it could be.

19:51 foxdonut: weavejester: no problem, I understand, and I appreciate your help

19:51 weavejester: that last returns {"create-bookmark-table" {:id "create-bookmark-table", :up #<config$create_bookmark_table bookmarksite.database.config$create_bookmark_table@1909385>, :down #<config$drop_bookmark_table bookmarksite.database.config$drop_bookmark_table@12ca580>}}

19:52 weavejester: Oh, I meant, try calling it before running (create-schema-if-necessary)

19:52 foxdonut: oic, ok let me try

19:52 weavejester: foxdonut: It registers the function as a known migration

19:54 foxdonut: weavejester: indeed that fixes the problem

19:54 weavejester: foxdonut: I had some plans for a defmigration that would make things easier, adding the :id and remember-migration in automatically.

19:55 foxdonut: weavejester: nice.. any reason why migrate-all wouldn't imply to remember each migration?

19:56 weavejester: foxdonut: It does, but I think the order is a little wrong.

19:57 foxdonut: weavejester: hmm, I think I see what you mean..

19:59 weavejester: foxdonut: It calls remember-migration each time migrate is called, but I think migrate-all should register all the migrations before it starts to apply them.

19:59 foxdonut: Like: (doseq [m migrations] (remember-migration m))

20:00 foxdonut: weavejester: right, otherwise the strategy decides whether to run migrate, before the migration is registered

20:01 weavejester: foxdonut: Exactly. It's a bug, I think.

20:01 foxdonut: weavejester: would you like me to try the change, test it, send you a pull request?

20:01 weavejester: foxdonut: Please do

20:02 foxdonut: weavejester: ok, will do. again, thanks for your help, I appreciate it!

20:02 technomancy: weavejester: sorry I dropped the ball on that whole ragtime thing

20:02 weavejester: foxdonut: No problem! Sorry about the rough state of ragtime. I haven't yet gotten onto migrations in my app, so I've yet to work on it recently!

20:02 technomancy: might end up back on clojars soon; will see if we can give it a spin there

20:03 weavejester: technomancy: Hum? I haven't looked at it recently either, so no need to apologise!

20:03 dabd: what is the functional idiom for taking numbers from a list [1 2 7 10 5 4] while the sum of those elements is inferior to a given value? I'm trying to use take-while but i cannot figure how to keep the sum without using atom

20:04 amalloy: &(doc reductions)

20:04 lazybot: ⇒ "([f coll] [f init coll]); Returns a lazy seq of the intermediate values of the reduction (as per reduce) of coll by f, starting with init."

20:04 hiredman: inferior? you mean less than?

20:04 foxdonut: weavejester: as technomancy said earlier today, the other migration libs seem to try to do too much, and I agree, yours is the cleanest one

20:06 weavejester: gotta run now to put the kids to bed-- I'll be in touch.

20:06 weavejester: foxdonut: Glad you like it :)

20:07 amalloy: &(map second (rest (take-while (fn [[sum num]] (< sum 21)) (reductions (fn [[sum num] x] [(+ sum x) x]) [0 0] [1 2 7 10 5 4])))) ;; dabd?

20:07 lazybot: ⇒ (1 2 7 10)

20:07 foxdonut: best part of clojure! all these libraries that are devoid of cruft.

20:08 emezeske: amalloy: I'm so glad that you keep reminding me about reductions... There are so many places where it makes for simple solutions

20:09 dabd: amalloy: thanks. reductions seems useful

20:29 rhc: do let bodies have an implict do?

20:29 nDuff: rhc: yes

20:33 rhc: nDuff: thanks

20:34 these "Evaluation aborted" errors are driving me nuts, can't figure out where the crash is occuring

20:34 muhoo: hehe, i find i'm using (vector ) and (hash-map) instead of {} and [] so that i don't end up matching up crap at the end of functions that look like javascript,i.e. ]}])])

20:34 Frozenlock: I have a problem here... I just moved from Win7 to Ubuntu, and (.getHostAddress (java.net.InetAddress/getLocalHost)) doesn't work in the same way. I was expecting to get my machine IP (the one given by my router), but instead got 127.0.0.1

20:34 muhoo: )))) is cleeeener

20:35 emezeske: muhoo: you're not using a paredit mode of some sort?

20:35 TimMc: muhoo: Terrible.

20:38 muhoo: what drives me nuts about paredit is no freedom of choice. if i want to fix or edit stuff, it doesn't let me

20:38 Frozenlock: Any advice on how to obtain my machine IP from clojure?

20:39 muhoo: or if i screw up and put a ( in the wrong place, it puts a ) and won't let me delete it.

20:39 beffbernard: muhoo: C-u del

20:40 muhoo: hm, must try, thanks

20:40 amalloy: my problem with cars is if i accidentally turn them upside down they're too heavy to flip over, so i just walk everywhere

20:40 beffbernard: C-q ( to insert paren

20:40 emezeske: muhoo: I dunno about emacs, but I use paredit in vim and it's very easy to tell it "I know what the hell I'm doing, so let me"

20:41 amalloy: it's not really quite the right analogy, but my point is paredit actually gives you faster/better ways to fix your problems, so the fact that it prevents (or makes difficult) the slow ways is not really a sticking point

20:42 beffbernard: amalloy: After paredit, I can never see C-k in the same light again

20:42 :*(

20:42 amalloy: eh?

20:43 beffbernard: I miss C-k in any other mode

20:43 wei_: hi, is there a way to change the agent state in its error-handler? I want to store the error in the agent state without calling send or send-off, which won't work since the agent is already failed

20:43 amalloy: beffbernard: C-M-k

20:43 works in most modes

20:43 beffbernard: :O

20:45 amalloy: not quite the same

20:45 amalloy: no

20:45 beffbernard: almost like M-d in java-mode

20:45 amalloy: but it gets you the balanced pairs, which is the important part IME

20:45 clojurebot: You don't have to tell me twice.

20:46 amalloy: i rarely really care about C-k except as a lazier way to type C-M-k a few times

20:47 muhoo: i tend to do C-M-space, then C-w

20:47 beffbernard: I used to use C-k constantly… it's like a shotgun approach.. it was almost faster if I accidently deleted a few things I didn't want and retype them

20:47 muhoo: on mine, C-k is kill line, i use that in just about every mode

20:48 gfredericks: amalloy: glad I saw that. I just learned about C-M-k

20:48 muhoo: or "D" if i happen to be in vim.

20:49 beffbernard: so who else is trying these commands?

20:49 these are gold

20:50 muhoo +1 for C-M-space

20:50 amalloy: beffbernard: hit it a few more times to highlight more sexps

20:53 mebaran151: anybody know a good wsdl web services api for Clojure?

20:54 beffbernard: yeah I noticed that

20:54 good stuff

20:54 muhoo: C-M-space C-x C-x, in particular

20:55 "where the hell does this form end???"

20:55 amalloy: i dunno, i just use C-M-f

20:55 mucking with point and mark for that seems like wasted effort

20:57 beffbernard: Typing C-M all the time can't be too healthy

20:57 amalloy: surely you have caps-lock mapped to ctl, though. it's not really that bad as long as you're not moving your pinky way down there

20:58 * gfredericks imagines amalloy's second sentence out of context

20:58 muhoo: technomancy: my daughter and her friends are obsessed with moustaches for some reason. so i printed this out for her: http://bace.s3.amazonaws.com/moustache-obsession.jpg

20:59 beffbernard: Yes, I do. it's the thumb stretch for meta that's annoying me.

20:59 Also mac keyboards have meta in a real awkward spot

21:00 muhoo: beffbernard: getcha one of these then: http://upload.wikimedia.org/wikipedia/commons/4/47/Space-cadet.jpg

21:00 even has a "like" and "unlike" key for using facebook

21:01 gfredericks: greek? top?

21:02 oh greek. I see.

21:02 beffbernard: holy crap, that's old

21:02 gfredericks: oh a macro key for clojure

21:02 amalloy: oh, yeah. on the rare occasions i use a mac i swap meta/cmd

21:02 beffbernard: haha waht's a rub out?

21:02 * gfredericks just got issued a mac for the first time

21:03 beffbernard: muhoo: ^

21:03 amalloy: beffbernard: delete/backspace. the terminology was still in flux back then

21:04 beffbernard: fancy

21:04 amalloy: (and actually so was the technology. some non-erasable media, like punched cards, you would write a "rub out" after the character you wanted to erase

21:05 beffbernard: immutable if you will

21:05 Bretzky: typematrix is the beset imo

21:06 beffbernard: amalloy: that's pretty interesting; I would not have know that otherwise

21:07 amalloy: all hearsay, of course; i'm not old enough to have lived through those days

21:11 creese: Having an issue with a jar. Main takes a number as an argument. Works fine form the REPL, but when I try to run the uberjar, I get

21:11 ja

21:12 java.lang.String cannot be cast to java.lang.Number (presumably because on the command line the number is now text)

21:12 beffbernard: ,(doc read-string)

21:12 clojurebot: "([s]); Reads one object from the string s"

21:13 creese: so I need to assume its a string? will it still work from the repl or do I need to deploy two versions now?

21:13 beffbernard: I'm assuming you are calling your main method right?

21:14 If so, the args will be strings

21:14 creese: why does it work from the repl without read-string then?

21:15 beffbernard: you're passing an int in the repl

21:17 brainproxy: anyone here know if it's possible to specify the JIT type (i.e. client or server) when firing up the JVM from c++ with JNI_CreateJavaVM?

21:18 the code I have to do that does accept options for the vm, but barfs when I try passing -server or -client as an option... having trouble hunting down the answer

21:25 muhoo: i think i'm seeing the benefit of using this nosql stuff. instead of the real core of the app being in sql, i'm writing it in clojure instead

21:26 if i used an sql back-end, i'd end up writing most of the business end of it *in* sql.

21:33 emezeske: muhoo: I don't think there's any reason you couldn't do that with sql

21:33 muhoo: AFAIK, the nosql benefits are mostly performance/scalability related

21:41 muhoo: that, and also the db's are schemaless

21:42 emezeske: Well, you could always just create a key/value table in a sql database and throw blobs of data in the value column

21:42 Not that I recommend that, of course :)

21:42 muhoo: i could do that, and i've seen that (like how android uses sqlite), but old habits die hard ;-)

21:43 this has really stretched my brain, it's been very difficult. but i'm seeing some benefit now.

21:43 emezeske: I was just pointing out that nosql is (in my mind) more for performance characteristics than being easier to program

21:43 muhoo: true

21:44 emezeske: Also, it has some big drawbacks if you happen to be dealing with data that is, in fact, relational

21:44 technomancy: muhoo: that's hilarious; love it

21:44 muhoo: technomancy: you're welcome :-)

21:44 actually, thank you for that great graphic

21:44 did you draw it?

21:44 technomancy: my brother-in-law made it

21:44 muhoo: he's good.

21:45 technomancy: he does game scene art; hoping to move into concept art

21:46 also did the Pindah logo: https://github.com/mirah/pindah

21:47 muhoo: nice, alien basketball

22:11 Frozenlock: I've made a function to get my IP on Ubuntu (normal InetAddress/getLocalHost doesn't work on this OS. Well it works, but not as I was expecting). Any suggestions? It seems really big for such a trivial task: http://pastebin.com/JpSR5SN3

22:13 jweiss: anyone ever have lein run *really* slowly, and get a thread dump showing it's stuck at leiningen.util.file$delete_file_recursively.doInvoke? seems to be recursively deleting files, but my hard drive activity is pretty much zero. cpu at 100% lein 1.7.1

22:14 i have had it do this for 30+ seconds, but now it's been several minutes, my project is not that big, <100 files including source and libs.

22:39 technomancy: jweiss: that sounds like a bug we had in 1.7.0, but it should be fixed in 1.7.1

22:40 do you have a lot of .class files?

22:41 jweiss: technomancy: i have 1381. i don't know if that's a lot, it includes all the deps' classes

22:42 technomancy: kind of a lot, yeah =\

22:42 a bug in 1.7.0 caused there to be a GC forced in between deleting each file

22:42 jweiss: technomancy: huh, i ran lein upgrade earlier, and saw it download 1.7.1, but i still have 1.7.0

22:42 technomancy: ah... odd

22:42 jweiss: let me try that again :)

22:43 oh no wait, that was on my laptop. sorry, bad memory on my part :)

22:44 technomancy: cool

22:44 jweiss: works better now, thanks technomancy

22:47 technomancy: great

22:49 jweiss: is 1300 classes really a lot? considering every function in every lib that gets loaded (both anonymous and named) has a class, that doesn't seem like a lot at all.

22:51 tomoj: that's the slow clean bug?

22:52 (missed the question)

22:52 jweiss: tomoj: yep

22:52 now compiling seems fairly slow

22:53 takes about 45 seconds to recreate those 1300 classes, seems like javac would be much faster, but i probably can't compare javac to the clojure compiler :)

22:54 what makes me suspicious that the compiling is not going as fast as it could, is the 5% cpu utilization.

22:55 it seems to be all disk activity, but there's no way the disk should take 45 seconds to write 6.5mb of class files.

23:05 echo-area: Does anyone here use aleph (https://github.com/ztellman/aleph)? The compilation of code using it is _very_ slow. Am I doing something wrong?

23:09 And the java compiling process uses more than 200 MB memory

23:25 tomoj: I've noticed slowdowns from aleph too

23:26 no clue why

23:28 echo-area: I guess something is causing the java process using very large memory usage

23:28 and that slows down the compilation

23:57 felideon: what are the rules of hyphen motion in clojure, with regards to ? and predicate functions

23:58 long-predicate-name?

23:58 or long-predicate-name-?

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