#clojure log - May 03 2014

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3:38 ivan: this lein-figwheel is cool https://groups.google.com/forum/#!topic/clojurescript/sKXiohA4hsw

3:52 dbushenko: hi!

3:53 is there a way to get all local variables and all bindings inside one function?

4:26 amalloy: dbushenko: maybe. why would you want that?

5:17 wink: definitely sounds interesting, I only ever needed that for all global variables (in ruby)

5:20 dbushenko: amalloy: trying to insert a debugging repl inside the code

5:20 need to evaluate it using the whole environment

5:21 amalloy: okay. in a macro, you can refer to &env, which will be a map whose keys are the names of locals

5:21 the values of the map are opaque and mysterious

5:22 dbushenko: is &eve available outside the macro? I tried to evaluate it in the repl and it is not found

5:22 *&env

5:53 amalloy: no, that's why i said in a macro

6:01 the idea is to expand into useful code based on the locals

6:01 ,(defmacro all-locals [] (into {} (for [[sym _] &env] `['~sym ~sym])))

6:01 clojurebot: #'sandbox/all-locals

6:01 amalloy: ,(defn foo [x] (prn (get (all-locals) 'x)))

6:01 clojurebot: #'sandbox/foo

6:01 amalloy: ,(foo 5)

6:01 clojurebot: 5\n

6:52 dbushenko: amalloy_, thanks!

6:52 that was helpful!

7:33 ambrosebs: Bronsa: can analyze take a keyword argument for the macroexpand-1 function to use?

7:33 (analyze frm env :macroexpand-1 m)

7:34 otherwise it seems I need to rewrite my own analyze to use my own mexpand?

7:34 magopian: i'm trying to understand the validation seqs in http://www.braveclojure.com/writing-macros/#7__Brews_for_the_Brave_and_True

7:34 and I don't get the "#(or (empty? %) ..." part

7:34 Bronsa: ambrosebs: you mean rather than binding ana/macroexpand-1?

7:34 magopian: why have this (empty?) thing in there? what is it used for?

7:35 ah, forget it, I just got it :)

7:36 ambrosebs: Bronsa: hopefully I've understood how dynamic binding works, but it seems the body of analyze always rebinds ana/macroexpand-1 to the same fn

7:36 magopian: (it's to not have this validation error message displayed if the value is empty... it's a bit backwards because the validation function has to return "true" if valid

7:36 Bronsa: ambrosebs: yeah, sure

7:36 ambrosebs: Bronsa: rebinding it doesn't seem to do anything

7:37 Bronsa: ambrosebs: I'll add a 3-arity to analyze and friend taking a default map of bindings

7:37 so you can do (analyze form env {#'ana/macroexpand-1 my-own-mexpand})

7:38 ambrosebs: Bronsa: seems like a good time to use keyword args

7:38 Bronsa: but cool

7:38 Bronsa: ambrosebs: not a big fan of kw args tbh

7:39 ambrosebs: or a flat map of kw args

7:39 clgv: magopian: well the logic in the example checks not-empty first. you probably dont want to have two error messages for the same error when the second does not even apply

7:39 ambrosebs: gah

7:39 Bronsa: having a map of var->fn makes it just a matter of (merge default-bindings opts)

7:40 ambrosebs: just woke up from a nap

7:41 magopian: clgv: yup, got that after posting my question ;)

7:42 is it more idiomatic to use (get mymap mykey) or (mykey mymap) ?

7:43 (or even (mymap mykey) which looks sooooo backwards to me, but I know it works)

7:43 ,(get {:foo :bar} :foo)

7:43 clojurebot: :bar

7:44 magopian: ,(:foo {:foo :bar})

7:44 clojurebot: :bar

7:44 magopian: ,({:foo :bar} :foo)

7:44 clojurebot: :bar

7:44 clgv: magopian: it is idiomatic to have the keyword in first position for keyword access to maps. for everything else you need to put the map first, since otherwise your code might fail

7:45 ,(:foo {:foo 42 :bar 4711))

7:45 clojurebot: #<RuntimeException java.lang.RuntimeException: Unmatched delimiter: )>

7:45 clgv: ,(:foo {:foo 42 :bar 4711})

7:45 clojurebot: 42

7:45 clgv: ,(1 {1 2})

7:45 clojurebot: #<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>

7:45 clgv: ,({1 2} 1)

7:45 clojurebot: 2

7:46 magopian: ahhhh, I see, i didn't think of that, of course, you don't need keywords in a map

7:46 thanks a lot clgv

7:47 I find the forms without the "get" a bit more difficult to read, because you first have to find out what is this "function" you're calling

7:47 eg:

7:47 clgv: magopian: yeah can use `get` then

7:47 magopian: ,(let [mymap {1 2}] (mymap 1))

7:47 clojurebot: 2

7:48 clgv: but sometimes it's really useful to pass in a map where a function is expected

7:48 magopian: clojure feels very ruby/perl-like to me pythonista used to the TWOOTDI :)

7:48 clgv: twoo..?

7:48 magopian: There's One Obvious Way To Do It

7:48 (it's a Python moto)

7:48 clgv: arent there multiple ways in python?

7:49 afaik it's a multi paradigm language where you can program almost any way you like

7:49 magopian: the language and well known, well spread and well evengelized idioms aim to have one obvious way to do things

7:49 being able to doesn't mean it's a good idea

7:50 you could use a "for" with indexes and stuff, but it's not idiomatic, and you're very very encouraged to do things like "for ... in ..."

7:50 clgv: in general true but it raises the question why to support multiple paradigms then ;)

7:50 magopian: (the same way you usually don't use "for" and loops in clojure)

7:50 clgv: i'm not talking about paradigms here (programming in a functional/imperative/oo way)

7:50 but really about "is it idiomatic to use this or this form"

7:51 clgv: there is no rule to not use "for" in clojure ... it's pretty useful for data processing

7:51 but it's a different "for" than in pythion ;)

7:52 magopian: but than you have one idiomatic form for each paradigm right? so that's more than one way ;)

7:53 magopian: well, not really

7:53 you don't need one for each paradigm

7:53 i don't have a proper example at hand sadly

7:54 and i'm in no way trying to compare oranges and apples

7:54 just telling about my feeling of being a bit lost with so many different possibilities giving the same end result

7:54 which one should I use?

7:55 i understand the freedom of using just any solution I feel like, but then, it's a bit more difficult for maintainers and reviewers

7:55 Bronsa: magopian: depends on what's your variable. (fn [m] (:key m)), (fn [k] ({:foo 1 :bar 2} k))

7:56 magopian: Bronsa: i see

7:56 you have a point

7:57 clgv: magopian: that's the rule from above with keywords in call position

7:57 magopian: I might always use "get" or the "map first" forms, as they can be used in any case

7:58 the keyword first only works for... well, keywords ;)

7:58 clgv: yeah but in that case it reads more like accessing attributes of data

8:08 scape_: not sure where refheaps paste button went, some reason I think I heard someone mention this last night. anyways.. here is a paste I'm curious about: https://www.refheap.com/85069

8:09 why does that actually work in the thread? is first some how not actualized until after the thread sleeps?

8:10 because the thread, it appears, gets the first element, sleeps (which is when the array is reset), and then somehow still can update the array. I'm confused how this is possible

8:14 clgv: scape_: what exactly do you expect to happen and what do you observe?

8:15 scape_: the threads reference to first ele would likely be a1, looking at the code, but its not

8:15 let me try somthing

8:16 ambrosebs: Bronsa: in case my last msg didn't work, I mean (analyze form env opt)

8:16 clgv: scape_: could be b1 as well

8:17 scape_: https://www.refheap.com/85069

8:17 ambrosebs: (analyze frm env {:bindings bmap})

8:18 clgv: scape_: so? obviously b1 otherwise it would fail with an exception

8:18 Bronsa: ambrosebs: uhm to you mean in case more opts will be added? sounds reasonable

8:18 clgv: ,(let [a (promise)] (deliver a 0) (deliver a 1))

8:18 clojurebot: nil

8:18 ambrosebs: Bronsa: hehe yes

8:18 clgv: oh wait. that was removed it seems

8:18 scape_: yes thats my point

8:18 :)

8:19 clgv: what's your point?

8:19 Bronsa: ambrosebs: you have a point. let me change that then

8:20 TIL get-in has a not-found arg

8:20 clgv: scape_: what is your original goal?

8:20 scape_: for coordination between threads you should use atoms or refs

8:20 scape_: ok

8:21 clgv: well promises as coordination work for certain scenarios as well. but the array is not really suitable

8:22 Morgawr: I'm probably missing something but.. how come I can't see the "paste" button on refheap.com anymore? Has it been moved and I can't find it or am I just stupid? :(

8:22 scape_: yes, i see. figured it out too, array copy is fast

8:23 hit ? Morgawr

8:23 Morgawr: ah

8:23 ctrl+enter

8:23 why remove the button altogether?

8:23 scape_: idk :-\

8:23 clgv: ui improvement? :P

8:23 TEttinger: pessimization?

8:23 Morgawr: I appreciate keyboard commands but this confused me a lot lol

8:23 TEttinger: worse is better?

8:24 clgv: start a petition to get back the start menu on refheap ... oh wait, paste button I mean ;)

8:24 * Morgawr shrugs

8:26 TEttinger: just use the API and spam it with pastes demanding a paste button back

8:27 Morgawr: TEttinger: lol

8:36 clgv: ,(slurp "http://refheap.com")

8:36 clojurebot: #<SecurityException java.lang.SecurityException: denied>

8:36 clgv: ah clojurebot won't help ;)

8:52 cYmen_: Greetings clojurians.

9:02 Cursors are only consistent during the application render phase - that is inside the life cycle methods.

9:02 man...this om tutorial

9:03 I know neither what the render phase is nor the life cycle methods. At least there is an explanation of cursor but I'm not sure I understand it.

9:07 clgv: cYmen_: is there a link to preliminary literature?

9:08 cYmen_: otherwise let the author know what's missing

9:10 cYmen_: I think the authors assumes a little too much knowledge of react or something.

9:10 This is the basic introductory om tutorial and it says it requires knowledge of clojure/clojurescript.

9:12 clgv: cYmen_: happens to all of us right? ;)

9:13 cYmen_: Yeah, I'm in no way surprised and the tutorial is really not bad.

9:13 clgv: I know nothing of react or om. ;)

9:14 cYmen_: Well, it's some sort of framework for dealing with events.

9:14 clgv: yeah, seems to be the next big thing for clojurescript frontends as far as one can read on the ML ;)

9:16 cYmen_: hm...don't really read the mailing list

9:16 getting into clojure with a day job and a life is too fucking hard >_<

9:19 Morgawr: cYmen_: https://github.com/levand/quiescent I found this to be a much simpler and (imo) better implementation of React on top of clojurescript. Om is much more powerful but also much more complicated

9:19 although I'm no webdev and I only dabbled with it a bit

9:19 having no knowledge whatsoever about react, I found quiescent to be easier to understand than Om

9:19 mpenet: it's not the first time I hear this about om... didn't try it myself tho

9:20 there's "reagent" also I think

9:20 Morgawr: yeah

9:22 cYmen_: maybe I should try this quiescent

9:22 at least I'll get a different view on things :p

9:22 but then again constantly trying something new is a great way to never get anywhere

9:24 clgv: cYmen_: depends whether you are studying or actually trying to build something for work ;)

9:26 cYmen_: clgv: if I start asking philosophical questions like that I'll never do anything again ;)

9:32 clgv: cYmen_: the comparison on the quiescent page could help you^^

9:33 cYmen_: yeah I'm pretty happy with that

9:33 and the general backinfo on react, too

9:35 ToxicFrog: Hmm

9:35 clgv: is "virtual dom" a similar concept like having an invisible buffer image in a gui to draw faster without gui updates?

9:35 ToxicFrog: The documentation is ambiguous, but looking at the source, it looks like core.async filter< just flat out drops any messages that don't match p, rather than leaving them on the original channel

9:36 Is there an equivalent that doesn't drop messages? Ideally I want to have a channel with a bunch of different tasks all filter<ing on it with different ps.

9:39 Ok, it looks like I want either pubsub or tap

9:51 Man

9:51 The fact that you can only use <! and >! if you are lexically within a go block is annoying as hell

10:20 ashtonkemerling: Morning folks.

10:20 Never realized how big this chanel was.

10:41 fro: hello everyone! How do you stub external services? Maybe there is a library, that allows to save function responses somewhere on the disk (fixtures) automatically for using that for tests?

10:42 ashtonkemerling: I always found that Midje had very nice semantics for stubbing out functions.

10:43 But alas there was no way that I found to provide a reusable map of stubs.

10:45 TEttinger: serializable-fn ?

10:46 fro: yes, I just want something, that will save function results automatically for test (better on hard disk). I can do it by hand, but I think this functionality is so obvious and maybe somebody have a solution

10:48 ashtonkemerling: If you have the spare bandwidth maybe write it for the community at large?

10:48 It appears to be something that we're missing at the moment.

10:54 fro: I just wonder maybe somebody have something in "the cache"

10:56 Morgawr: does it make sense that some clojure code runs faster without type notations/hints?

10:56 ashtonkemerling: Off the top of my head? No.

10:56 Unless if the old type hints were wrong.

10:56 Morgawr: mm.. wait nevermind, I just had a spike, in average it runs the same

10:56 false alarm

10:57 ashtonkemerling: Make sure your JVM is warmed.

10:57 That usually ruins benchmarks.

10:57 clgv: criterium^^

10:57 Morgawr: thanks

10:57 I'll keep that in mind

10:58 clgv: Morgawr: warmup and statistical analysis are the winning points here ;)

10:58 Morgawr: yup

10:59 is there a way to define type hints for collection of classes? like I have a vector of bodies (Body is a defrecord)

10:59 ashtonkemerling: And that's why benchmarks are notoriously hard.

10:59 clgv: Morgawr: no. it would not have any impact on performance anyway

10:59 TEttinger: unless it's an array

11:00 clgv: Morgawr: what do you do with it? accumulating some values?

11:00 Morgawr: clgv: calling map or reduce (depends on the cases) on it

11:00 clgv: TEttinger: well but then you need areduce amap and co to have a result from a type hint ;)

11:00 TEttinger: right

11:00 clgv: Morgawr: reduce is efficient on vectors so you are safe there

11:00 Morgawr: so, next question is... is there any advantage in type hinting part of a function's signature but not all of it?

11:01 whodidthis: hit me up with a cool way to add 1 to first 3 elements in vector [5 4 6 3 4]

11:01 TEttinger: ,(apply + (take 3 [5 4 6 3 4]))

11:01 clgv: Morgawr: type hints only matter for interop with java. so just use (set! *warn-on-reflection true) and see where you get warnings and then apply type hints to get rid of those warning

11:01 clojurebot: 15

11:02 Morgawr: clgv: I thought type hints helped with performance too?

11:02 whodidthis: sorry, +1 to first 3 elements so [5 4 6 3 4] becomes [6 5 7 3 4]

11:02 clgv: Morgawr: no not in general only when you call member functions of java classes. type hints remove the need for runtime reflection

11:03 Morgawr: clgv: ah.. I see...

11:03 ashtonkemerling: Because Java is expecting a concrete type.

11:03 Morgawr: this means it doesn't help with defrecord either, right?

11:03 ashtonkemerling: So it's gotta figure it out.

11:03 clgv: Morgawr: special case are arrays where you need typehints as well

11:03 ashtonkemerling: Whereas Clojure prefers protocols & friends.

11:04 Bronsa: ,(mapv + [5 4 6 3 4] (concat (repeat 3 1) (repeat 0)))

11:04 clojurebot: [6 5 7 3 4]

11:04 Bronsa: whodidthis: ^

11:04 clgv: ashtonkemerling: well it is actually the clojure compiler, when no type hints are given and the method signature with only object params does not resolve to anything usable it just generates code to call the give java method via reflection

11:05 TEttinger: ,(map-indexed #(if (> 3 %1) (inc %2) %2) [5 4 6 3 4]))

11:05 clojurebot: (6 5 7 3 4)

11:05 ashtonkemerling: Right.

11:05 Bronsa: TEttinger ew

11:05 ashtonkemerling: I've always hated map-indexed

11:05 Morgawr: I've found it useful a few times :P

11:05 ashtonkemerling: 90% of the time I use it I've made a huge mistake.

11:06 Usually trying to redo a nasty JS algorithm without thinking it through enough.

11:06 whodidthis: Bronsa: cool

11:06 ashtonkemerling: .... not that I've done that lately.

11:07 TEttinger: ,(map apply (concat (repeat 3 inc) (repeat identity)) [5 4 6 3 4]))

11:07 clojurebot: #<IllegalArgumentException java.lang.IllegalArgumentException: Don't know how to create ISeq from: java.lang.Long>

11:07 ashtonkemerling: ,(repeat 3 inc)

11:07 clojurebot: (#<core$inc clojure.core$inc@6314d9> #<core$inc clojure.core$inc@6314d9> #<core$inc clojure.core$inc@6314d9>)

11:08 ashtonkemerling: That seems an odd way to do that.

11:08 TEttinger: haha

11:08 Bronsa: TEttinger you don't want apply there

11:08 TEttinger: he was looking for a cool way!

11:08 ashtonkemerling: ,(map (concat (repeat 3 inc) (repeat identity)) [5 4 6 3

11:08 4]))

11:08 clojurebot: #<RuntimeException java.lang.RuntimeException: EOF while reading>

11:08 ashtonkemerling: ,(map (concat (repeat 3 inc) (repeat identity)) [5 4 6 3

11:08 4])

11:08 clojurebot: #<RuntimeException java.lang.RuntimeException: EOF while reading>

11:08 ashtonkemerling: Derp

11:08 ,(map (concat (repeat 3 inc) (repeat identity)) [5 4 6 3 4])

11:08 clojurebot: #<ClassCastException java.lang.ClassCastException: clojure.lang.LazySeq cannot be cast to clojure.lang.IFn>

11:09 whodidthis: repeat is also quite cool for exploding lighttable

11:09 ashtonkemerling: Yeah, figured.

11:09 Still not sold on that editor.

11:09 But I'm thinking of using it to sell my coworkers on Om.

11:09 whodidthis: i heard chris grang working on new editor now

11:10 ashtonkemerling: Hope not

11:10 That's how you end up with a mess of half-finished things.

11:12 whodidthis: https://www.youtube.com/watch?v=L6iUm_Cqx2s

11:12 ashtonkemerling: I don't feel that LightTable is done.

11:13 If only sound worked on this machine....

11:13 Right folks, time for me to go do things. Catch you all later.

11:13 whodidthis: im also quite saddened but maybe he has a plan

11:13 Glenjamin: does he say LT is done?

11:16 Morgawr: as far as I know there are other people working with Chris on LT/Aurora (not too sure), and I think he's going to have Aurora run inside LT or something

11:16 at least the design is similar

11:16 maybe he's going to have a suite of editors for Clojure (and other languages) that run in a shared "engine" or something

11:20 Glenjamin: the impression i got was more that aurora was a research project

11:20 and lighttable was a product

11:25 rolfb: ,(apply map list '((1 2) (3 4) (5 6)))

11:25 clojurebot: ((1 3 5) (2 4 6))

11:25 rolfb: hi, could someone explain to me what's happening with the combination of apply map list?

11:27 Bronsa: ,(map list '(1 2) '(3 4) '(5 6))

11:27 clojurebot: ((1 3 5) (2 4 6))

11:28 rolfb: map iterates over each column?

11:28 bbloom: (doc map)

11:28 clojurebot: "([f coll] [f c1 c2] [f c1 c2 c3] [f c1 c2 c3 & ...]); Returns a lazy sequence consisting of the result of applying f to the set of first items of each coll, followed by applying f to the set of second items in each coll, until any one of the colls is exhausted. Any remaining items in other colls are ignored. Function f should accept number-of-colls arguments."

11:28 cYmen_: map simply iterates over all collections always taking one element from each and applying the function

11:28 rolfb: aha

11:29 bbloom: ,(map + [5 10] [1 2])

11:29 clojurebot: (6 12)

11:29 cYmen_: but map wants its parameters like this (map function list1 list2 list3)

11:29 rolfb: that's the part which was missing for me then

11:29 cYmen_: you need apply because your list1...list3 are in a list themselves

11:29 so basically if you have (param1 param2 param3)

11:29 and a function foo which takes 3 parameters you can call it with apply

11:30 (apply foo (...params...))

11:30 well.. (apply foo params)

11:30 ,(let [params (1 2 3 4 5)]

11:30 clojurebot: #<RuntimeException java.lang.RuntimeException: EOF while reading>

11:30 rolfb: thanks cYmen_; i think i've got it now. the confusing part was map iterating over columns instead, but it makes sense now

11:30 cYmen_: ,(let [params (1 2 3 4 5)] (apply + params))

11:30 clojurebot: #<ClassCastException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.IFn>

11:30 cYmen_: ,(let [params '(1 2 3 4 5)] (apply + params))

11:30 clojurebot: 15

11:31 cYmen_: ,(let [params '(1 2 3 4 5)] (+ params))

11:31 clojurebot: #<ClassCastException java.lang.ClassCastException: Cannot cast clojure.lang.PersistentList to java.lang.Number>

11:31 rolfb: could have used reduce instead of apply here?

11:32 cYmen_: sure

11:32 rolfb: ,(let [params '(1 2 3 4 5)] (reduce + params))

11:32 clojurebot: 15

11:32 rolfb: maps and lists is new to me

11:32 but it's very cool

11:33 cYmen_: most languages have that these days

11:33 often it is more like "for each"

11:33 rolfb: cYmen_: i'm used to map iterating over the top elements

11:33 not taking the first of each collection

11:34 cYmen_: "top" elements?

11:34 rolfb: yeah, if you have a nested structure, it doesn't map the first column in each collection to the method you are mapping over

11:35 it maps the entire structure as one argument

11:35 cYmen_: oh yeah, map does that as well in clojure

11:35 Glenjamin: rolfb: (map f coll) does that, but (map f coll1 coll2) is similar to (map f (zip coll1 coll2)) in other languages

11:35 cYmen_: but since you're using apply you have several structures

11:36 rolfb: yup, the difference Glenjamin points out it why I was confused

11:37 thanks everyone

11:56 cYmen_: Why is this rotten cljs browser repl not working.

11:56 bhauman: cYmen_: if its not working its probably because you are using it correctly

11:57 cYmen_: YES!

11:57 Excatly what I thought.

11:57 But using it incorrectly didn't help.

11:57 bhauman: lol

11:58 bbloom: cYmen_: yell at cemerick... or yell at dnolen to yell at cemerick :-)

12:00 bhauman: cYmen_: you could try this lein plugin I just wrote and see if it meets you needs

12:00 cYmen_: bbloom: I'd rather have some debugging advice. :)

12:00 bhauman: What does it do?

12:01 bhauman: it’s a live coding plugin it depends on how you wrote your code base

12:01 http://rigsomelight.com/drafts/interactive-programming-flappy-bird-clojurescript.html

12:01 its replaced my REPL workflow

12:02 Glenjamin: i read that article this morning, seems like a great concept

12:02 jonasen: bhauman: It worked great for me! I'm definitely going to use it more.

12:02 Glenjamin: (inc bhauman)

12:02 lazybot: ⇒ 2

12:03 jonasen: (inc bhauman)

12:03 lazybot: ⇒ 3

12:03 cYmen_: I don't have a code base yet.

12:03 bhauman: sweet I’m up to 3 :)

12:03 cYmen_: then I would try it

12:03 Glenjamin: the app i'm working on at the mo has records in its main atom, so a code reload screws up the state

12:04 i don't suppose you have any tips for that, beyond "don't use records"

12:04 cYmen_: bhauman: Going to try it later. Looks great!

12:04 bhauman: Glenjamin: so the records turn into striaght up maps?

12:05 Glenjamin: i treat them as maps, but i have a few hundred thousand and i was using records for efficiency

12:05 bhauman: jonasen: Glenjamin: thanks for the props guys

12:05 Glenjamin: this is server-side

12:06 but when i try and reload my code but keep on using the same state atom, i had issues because the record classes weren't the same anymore

12:06 cYmen_: bhauman: How are you using react with this? Should be save to use with om, right?

12:06 bhauman: Glenjamin: ahh … but I don’t see how that messes up the client side

12:06 Glenjamin: records had different fields

12:06 ?

12:07 Glenjamin: no, same record, but tools.namespaces had wiped out the old one

12:07 bhauman: cYmen_: yep the same or better with om

12:07 cYmen_: Crap, have to go.

12:07 Will try it as soon as I get back. Stick around so I can bother you!

12:07 Glenjamin: i'll have to give it another go when i get a chance - having to rebuild the state after a reload was getting annoying

12:08 bhauman: Glenjamin: Don’t hesitate to reach out. I’d like to understand any workflow problems that happening

12:09 jonasen: is om meant to be used with react-0.10.0 or react-0.9.0?

12:10 bhauman: the figwheel template includes react-0.9.0

12:10 bhauman: jonasen: yep, that is just for convenience, I’m pretty sure om is on 0.9.0 right now

12:11 https://github.com/swannodette/om/blob/master/examples/animation/index.html#L4

12:59 hugod: eul135@$^

14:04 rolfb: (doc subseq)

14:04 clojurebot: "([sc test key] [sc start-test start-key end-test end-key]); sc must be a sorted collection, test(s) one of <, <=, > or >=. Returns a seq of those entries with keys ek for which (test (.. sc comparator (compare ek key)) 0) is true"

14:04 rolfb: what does "ek" mean here?

14:24 michaelr525: hi

14:25 fifosine: Does anyone know of clojure programs that utilize self-modification?

14:32 michaelr525: here is a question: I have a function which reifies a Java type and returns the object, later a method on that object is called somewhere from the Java code. It seems that Clojure's runtime is having a hard time to dynamically load the required namespaces and so I'm getting errors like: Attempting to call unbound fn. I included a call to require the needed namespace to the method of the reified object and it seems that it helped. The

14:32 question is how to do it in a more elegant and correct way?

14:47 why are you so quiet, #clojure channel?

14:51 cshell: What’s the common pattern for deploying a ring app to production? Is it just ‘lein ring…’ from a git repo or do people prefer uberjars?

15:03 michaelr525: here is a question: I have a function which reifies a Java type and returns the object, later a method on that object is called somewhere from the Java code. It seems that Clojure's runtime is having a hard time to dynamically load the required namespaces and so I'm getting errors like: Attempting to call unbound fn. I included a call to require the needed namespace to the method of the reified object and it seems that it helped. The

15:03 question is how to do it in a more elegant and correct way?

15:07 amalloy: michaelr525: that's about all you can do. require the namespace once, before attempting to use the stuff in it

15:10 michaelr525: amalloy: is it a known problem?

15:10 it looks like the object's method is called from a different classloader or something like that

15:14 amalloy: is it a known problem that you can't run clojure code that hasn't been compiled yet? yes

15:16 michaelr525: hmm

15:16 The whole thing is AOTd, is it the same?

15:16 isn't

15:17 amalloy: ^

15:19 amalloy: probably not

15:20 michaelr525: amalloy: the thing is Clojure usually resolves namespaces and loads them on demand automatically, I just wonder why it fails here?

15:21 amalloy: huh? no it doesn't. it loads namespaces when, and only when, someone requires them

15:22 michaelr525: amalloy: of course I require them in the (ns) clause of the namespace which contains my reifying function..

15:22 but AFAIR, the actuall loading at runtime happens on demand

15:23 amalloy: michaelr525: it's quite possible i don't understand the scenario you've described

15:23 perhaps you could put together a minimal paste that demonstrates the problem

15:23 michaelr525: amalloy: ok, don't go anywhere :) it'll be ready in a minute

15:28 https://gist.github.com/michaelr524/eb09034134b6fab964f0

15:28 amalloy: ^

15:29 the object returned by create-scheme goes to Java land which later calls (deserialize) which results in an unbound fn exception

15:31 if I put there (require '[avroclj.avro :as avro]) just before calling (avroclj.avro/deserialize), it resolves the error

15:32 like this: https://gist.github.com/michaelr524/14cc830a36e7c7d296c9

15:32 ptcek: Anyone doing MILP or LP in clojure/lisp (in particular creating the model and converting to .mps/.lp files)??

15:32 lazybot: ptcek: Definitely not.

15:33 amalloy: michaelr525: sounds like a different classloader to me, or even a different jvm? storm probably does some weird stuff with your objects

15:34 michaelr525: amalloy: different jvm?

15:34 hmm

15:35 amalloy: i thought I could probably insert an (init) function in there which will require everything I need for this to work..

15:35 but it sounds dirty

16:07 cYmen_: phew

16:14 Is there a guide/howto on how to properly set up a brepl?

16:16 cespare: (let [n Double/POSITIVE_INFINITY] (case n Double/POSITIVE_INFINITY "yes" "no")) ; "no" ??

16:16 lazybot: cespare: Uh, no. Why would you even ask?

16:18 cespare: (let [n Double/POSITIVE_INFINITY] (= n Double/POSITIVE_INFINITY)) ; true

16:18 this doesn't make sense to me.

16:18 amalloy: cespare: case clauses aren't evaluated (ie, they're quoted). 'Double/POSITIVE_INFINITY is a symbol, not a number

16:19 cespare: ok thanks

16:19 case bites me again :)

16:19 bbloom: cespare: use `condp =`

16:19 ,(let [n Double/POSITIVE_INFINITY] (condp = n Double/POSITIVE_INFINITY "yes" "no"))

16:19 clojurebot: "yes"

16:20 cYmen_: Is there some way to check if the js part of the brepl connect is being executed?

16:30 kenrestivo: the chrome network debug tab?

16:35 cYmen_: hm..crap looks like it's not even getting called

16:35 I must be missing something. :/

16:37 kenrestivo: i use weasel instead and life is joy

16:38 cYmen_: weasel?

16:39 kenrestivo: ~weasel is https://github.com/tomjakubowski/weasel/

16:39 clojurebot: In Ordnung

16:39 kenrestivo: weasel?

16:39 ~weasel

16:39 clojurebot: weasel is https://github.com/tomjakubowski/weasel/

16:39 weasel is https://github.com/tomjakubowski/weasel/

16:39 kenrestivo: oh clojurebot, you so laggy

16:41 amalloy: kenrestivo: the lag is on your end. clojurebot answered you instantly

16:41 kenrestivo: big win for me with weasel was being able to refresh the page and not lose my nrepl connection

16:42 cYmen_: yuck

16:42 spotify application

16:42 just...yuck

16:43 kenrestivo: i have no idea what spotify is, and have never used it

16:44 hiredman: clojurebot: clojurebot |exploits| differences in network latency to appear to violate causality

16:44 clojurebot: You don't have to tell me twice.

16:44 hiredman: ~clojurebot

16:44 clojurebot: clojurebot is perhaps the definition of a legacy software system

16:44 hiredman: that too

16:44 kenrestivo: i thought clojurebot has a poetic soul?

16:45 as for lag, i've got znc and ppp and mobile involved, so yeah, it's prolly me

16:46 clojurebot rules and knows all

17:05 ToxicFrog: What is the equivalent in clojure of 'import java.io.ServerSocket'?

17:06 I figured (require '[java.io :refer ServerSocket]) would do it, but that gets me a confusing and unhelpful "no namespace: spellcast.net" error message (which is the name of the file's ns)

17:06 :refer [ServerSocket], rather

17:07 bbloom: ToxicFrog: see (doc ns) and (doc import)

17:07 require is for clojure namespaces, use import for java types

17:07 ToxicFrog: Aah

17:07 That worked!

17:07 Unfortunately, now that I'm past that, I have a syntax error.

17:07 Where? NO-ONE KNOWS.

17:08 Fucking hell, at least tell me what line you were parsing before you crash!

17:15 amalloy: ToxicFrog: fucking hell, at least paste a proper stacktrace before you complain about uninformative stacktraces!

17:17 ToxicFrog: amalloy: here you go: https://gist.github.com/anonymous/7761258d238c96edc7af

17:18 If you can figure out from that even what file the error was in, let alone exactly where, I will be amazed.

17:18 amalloy: hm, that is pretty bad. i would have expected to see a Caused By in there somewhere

17:18 ToxicFrog: Nope. That's the whole thing.

17:19 There's not even a "... n more" truncation.

17:19 (I did in fact find and correct the error by manual inspection of the entire codebase, which thankfully this program is still small enough for)

17:19 bbloom: ToxicFrog: you've got a defn somewhere without a arg list in it

17:20 amalloy: yeah, that's obvious enough, bbloom, but i was surprised to see this doesn't say where

17:20 ToxicFrog: bbloom: well, yes, the question is where?

17:21 bbloom: ToxicFrog: it's probably wherever you last changed something ;-)

17:21 that's the sort of error that git diff can find for you instantly, heh

17:21 (not making excuses for bad errors, just saying)

17:21 ToxicFrog: Actually, it wasn't anywhere near where I'd just changed something; I'd started writing something, then decided it was better off elsewhere and ended up writing a complete addition file without deleting the original (defn ...) I'd started writing.

17:21 You're right that git diff would probably have found this pretty quick.

17:31 dbasch: this is a pretty crappy error message: https://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj#L6826

17:32 or at the very least the exception should be thrown higher up, where there’s more information

17:37 visof: hello

17:38 Frozenlock: dbasch: How so?

17:38 Usually when I see this msg it's because I forgot to include the params vector

17:39 dbasch: Frozenlock: yes, but you don’t know where it happened

17:39 visof: Caused by: java.io.FileNotFoundException: clojure/foobar/native/.gitignore (No such file or directory) how can i dolve this error?

17:39 Frozenlock: dbasch: Ah ok, I see what you mean

17:39 dbasch: see ToxicFrog’s paste earlier

17:40 Frozenlock: visof: the file is not found... Does it exist?

17:41 visof: Frozenlock: i create native/.gitignore; when run lein run; i got native disappeared

17:43 dbasch: visof: what does your program do?

17:46 visof: dbasch: http://sprunge.us/jCia

17:47 cYmen_: What is the relation between the app-state in the atom and the state that is passed to render-state when using om?

17:48 Consider this https://github.com/swannodette/om/wiki/Basic-Tutorial#dealing-with-text-input-fields

17:48 It seems the list of contacts is in: (def app-state

17:48 (atom

17:48 {:contacts

17:48 but the contents of an input field are in (def app-state

17:48 (atom

17:48 oh ffs

17:49 sorry about the paste mess

17:49 visof_: dbasch: http://sprunge.us/jCia

17:49 dbasch: still there?

17:49 dbasch: visof_: yes, I don’t understand how that even compiles

17:50 visof_: dbasch: why?

17:50 " is deleted in html

17:50 dbasch: for one, you have strings without quotes

17:50 visof_: yeah

17:50 that's because the browser but i have them in my file

17:51 dbasch: why don’t you paste it to refheap?

17:51 visof_: dbasch: http://pastie.org/9137563

17:53 dbasch: visof_: and your project.clj?

17:54 visof_: dbasch: http://pastie.org/9137567

17:54 cYmen_: Is refheap private now?

17:55 amalloy: haha has Raynes still not fixed the paste button?

17:55 visof_: dbasch: http://pastie.org/9137574 error

17:55 dbasch: what do you think how can i fix this error?

17:55 cYmen_: amalloy: I guess not

17:56 Raynes: No, since nobody bothered telling me about it.

17:56 visof_: Raynes: i'm bothered

17:56 Raynes: You're all terrible people.

17:58 cYmen_: What, I just noticed it an brought it to your attention!

17:59 visof_: dbasch: still here?

18:00 dbasch: visof_: yes, your code can’t possibly work as is

18:00 for one, your clojure dependency is wrong

18:00 and also your requires are incompatible with your code

18:00 visof_: dbasch: so what do you suggest to fix it?

18:00 Raynes: I'll have this fixed in two shakes of a how the hell did this happen.

18:01 dbasch: visof_: where is jiraph.masai-layer?

18:03 visof_: dbasch: you mean at project.clj?

18:03 Raynes: whoa

18:03 Someone is using Jiraph?

18:03 Wild.

18:03 dbasch: visof_: no, in your requires

18:04 Raynes: Deja vu.

18:04 Bronsa: Raynes: how long have you been waiting to make that joke?

18:04 Raynes: Bronsa: Which?

18:05 Bronsa: Raynes: "wild", of someone using "jiraph"

18:05 visof_: dbasch: [flatland.jiraph.layer.masai]

18:07 whodidthis: this is going to take a while

18:08 dbasch: visof_: your project file and your source just don’t make any sense

18:11 visof: dbasch: sorry i got DC

18:11 dbasch: still around?

18:12 dbasch: visof: your source code and project file just don’t make sense

18:12 visof: dbasch: so what do you think to fix it?

18:13 dbasch: visof: it looks like you’re trying to follow a tutorial, but you probably should step back and explain what you’re trying to do

18:13 visof: dbasch: i just want to start to use jiraph

18:14 create a graph then add some nodes to it

18:14 as in tutorial

18:17 Raynes: Haha, I know how I broke refheap.

18:18 amalloy: you removed the submit button, bro

18:18 Raynes: I was editing the templates and realized I was in the wrong file, so I deleted a line I thought I had accidentally just typed.

18:18 amalloy: we all know

18:18 Raynes: That line was the submit button.

18:18 amalloy: Raynes: fwiw, that's a great advertisement for using `git add -p` to review changes before committing them

18:18 Raynes: Or magit.

18:19 amalloy: presumably that would work too. except you use magit and made this mistake

18:20 Raynes: amalloy: Um

18:20 amalloy: You have to choose to use that feature.

18:20 I did not.

18:20 It's no different from having to choose to use `git add -p`

18:21 amalloy: whatever. i'm not saying magit is bad, i'm saying review features are good and you should use them

18:21 since you brought up magit, i thought you were suggesting you had already used such a feature

18:22 Raynes: I do use that feature.

18:22 Just not this one particular time.

18:27 amalloy: magit master race

18:44 refheap is fixed

18:45 AWizzArd: Websockets? What lib to use?

18:56 the-kenny: http-kit?

19:01 AWizzArd: the-kenny: yes, I ran into that. But then… the github repo was updated the last time 2 months ago.

19:02 And has 38 open issues.

19:05 the-kenny: Hm, I'm not aware of any "newer" library. No recent updates might be a sign of mature software. Some of the issues are websocket-related though

19:10 AWizzArd: the-kenny: nginx is many more years in development but had recent commits, although it should be extremly mature by now.

19:11 Caffeine: What would be a fast, scalable database for storing Clojure structures (maps, vecs, etc.)?

19:12 AeroNotix: Caffeine: depends on your query requirements and needed consistency guarantees

19:13 Caffeine: do you have anything more specific to go on?

19:13 Caffeine: AeroNotix: I'll put more constraints in the application.. less in the DB... it's really more for storage than anything else... Property pattern oriented data... maps extending other maps, mainly.

19:14 AeroNotix: Caffeine: you're not understanding me

19:14 Different databases have different guarantees about what they can do in a CAP theory sense.

19:14 cmarques: Hello, how can I reload new routes when using Ring + Compojure without having to restart the server? Thanks!

19:14 AeroNotix: Caffeine: and they also provide different ways of storing and retrieving data

19:15 visof: how can i run https://github.com/ninjudd/jiraph basic example?

19:15 DomKM: Is it possible to lazily serialize and deserialize lazy seqs using nippy/freeze-to-out! and nippy/thaw-from-in!

19:15 visof: i didn't get done with errors

19:15 AeroNotix: cmarques: :ring {:auto-reload true} in your project.clj

19:15 Caffeine: AeroNotix: I was considering SQL for a long time, but I need something closer to clojure/lisp... more dynamic

19:15 AeroNotix: Caffeine: It just sounds like you have no clue what you need.

19:16 Caffeine: *WHY* do you need a more dynamic database?

19:16 visof: what i did http://pastie.org/9137563

19:16 AeroNotix: Caffeine: what particular aspect of your application demands a "dynamic" database, whatever that means.

19:16 visof: http://pastie.org/9137574

19:16 http://pastie.org/9137567

19:16 Caffeine: AeroNotix: Because the columns and tables have to be modified by the end users... that's what I mean

19:17 visof: please anybody help?

19:17 AeroNotix: Caffeine: but even a regular SQL table you could do that with

19:18 Caffeine: AeroNotix: Anyway, I thought there was something more clojurish... if there's nothing, I'll just pick one which has a decent clojure wrapper I guess

19:18 AeroNotix: Caffeine: There's nothing for the zero specifications you have given, no.

19:18 "More Clojurish" means... nothing?

19:19 What does that even mean

19:19 Caffeine: AeroNotix: Hhaha ok ok thanks

19:19 AeroNotix: Caffeine: is your application a toy?

19:19 If so; just use anything

19:20 but if you are making something you hope to sell, or are desining a system for your job. It would behove you to put more thought into this.

19:22 AWizzArd: I have to agree with AeroNotix here.

19:23 cmarques: AeroNotix: thanks, will try

19:23 AeroNotix: There's tonnes of little details with databases. Data model, consistency guarantees, availability guarantees, replication, query models.

19:24 etc etc

19:24 Caffeine: AeroNotix: Yeah, I'll do that... It's just crazy the number of databases there are around... I've already (last year) spend a week or so looking into the most popular various SQL and NoSQL databases.. you really have to know everything up front to be able to make a clear choice.

19:24 AeroNotix: Caffeine: exactly.

19:24 Caffeine: particularly pay attention to something called CAP theory.

19:24 And base your decisions on that

19:25 after that it's quite simple to narrow your choices down

19:26 Caffeine: Looked into that in the past too.. yeah I'll write down what I know and find a way to fill the gaps to make a better decision.

19:27 AeroNotix: Caffeine: look up anything by kyle kingsbury

19:27 And his work on Jepsen

19:28 Caffeine: Ah okay, I'll look at that too.

19:28 Thanks.. homework time it seems

19:30 mackin: i have a performance question regarding the jetty server, say a request comes in that requires computation that takes a while. if another request comes in, does it block on the first request completing?

19:31 AWizzArd: Does not block, as Jetty handles each request in a new thread.

19:31 Jetty even supports something such as continuations. That means: you can start a new thread doing the computation and move the web-thread back into the pool, so it can work off other requests.

19:32 And when your computation has finished you can "wake up" that old thread again, as if it never has stopped.

19:32 mackin: are there a limited number of webthreads? or can you specify the number

19:32 AWizzArd: Limited number yes. Check docs for more specific info or try #Jetty

19:33 mackin: ty AWizzArd

19:36 ToxicFrog: Is there an equivalent to (pr) that emits a string rather than writing to a stream?

19:37 AWizzArd: ToxicFrog: perhaps try (pr-str …)

19:42 ToxicFrog: AWizzArd: sweet, thanks

19:50 Foam-: Hello everyone. :) Anyone here familiar with embedding ClojureCLR from another .net language? I am struggling with the implementation, specifically how to pass in a string, have it get evaluated, and get the return result

19:51 Is there a ClojureCLR channel? Maybe this isn't the right spot

19:53 bbloom: Foam-: are you calling eval and getting a string back? or are you just unable to call eval at all?

19:53 waynr: howdy folks

19:53 is it possible to develop a lein plugin and use it in a local project without deploying it?

19:53 AeroNotix: waynr: sure

19:53 bbloom: waynr: just `lein install` it in to your local maven repo

19:54 AeroNotix: lein install the plugin locally in the plugin directory and then use it

19:54 yeah^

19:54 waynr: where is my local maven repo?

19:54 AeroNotix: waynr: don't think about that

19:54 waynr: is this kind of workflow documented or described somewhere?

19:54 AeroNotix: lein install will do it properly

19:54 just use `lein install` in the plugin project root

19:55 waynr: and then it will be available in another project root?

19:55 AeroNotix: waynr: yeah

19:55 but do you really need a lein plugin?

19:55 a lot of stuff can be done with aliases

19:55 waynr: i'm listening

19:55 AeroNotix: well, no, I'm listening. What're you writing a plugin for?

19:56 Foam-: bbloom: I don't even know how to call eval. Well, I import clojure.lang. then call "Compiler.eval(my_string)". then I get this odd error regarding "path1"

19:56 :D

19:57 waynr: it's difficult to describe

19:57 let me try

19:57 bbloom: Foam-: i dunno much about clj clr, but i can tell you that eval operates on *data* not strings

19:58 ,(eval "(+ 5 10)")

19:58 clojurebot: "(+ 5 10)"

19:58 bbloom: ,(eval (read-str "(+ 5 10)"))

19:58 clojurebot: #<CompilerException java.lang.RuntimeException: Unable to resolve symbol: read-str in this context, compiling:(NO_SOURCE_PATH:0:0)>

19:58 bbloom: ,(eval (read-string "(+ 5 10)"))

19:58 clojurebot: 15

19:59 Foam-: bbloom: yeah, I saw that eval is expecting an Object. do you know how I'm supposed to convert a string to an object? I've found a reference to "LispReader" but that's it so far, not really sure how to use it yet

19:59 bbloom: Foam-: i just showed you ^^

19:59 Foam-: ha

19:59 waynr: so there is this clojure project at work that creates staging directory to prepare for os packaging of other clojure projects and it creates that staging directory based on templates and project-specific configs. currently, the project-specific configs are stored in the "staging" project but i'd like to try turning this staging project into a lein plugin so it can be used from within the other clojure

19:59 projects themselves

20:00 bbloom: Foam-: i highly recommend you get some familiarity with clojure itself before trying to embed it

20:00 waynr: then the configs would be stored in those projects themselves rather than in the staging project

20:01 Foam-: bbloom: i have a lot of lisp experience. the issue is translating a string of code from a CLR to ClojureCLR. I guess LispReader is the path forward

20:01 AeroNotix: yeah sounds like a plugin is needed, since you need to have access to arbitrary project map

20:01 waynr:

20:02 bbloom: Foam-: if you've got anything smaller than a file, read-string is the way to go

20:02 waynr: AeroNotix: that's what i was thinking, but i'm still fairly new to clojure

20:02 AeroNotix: waynr: nw

20:02 fowlslegs: bbloom: Thanks so much for your comments 4 minutes ago. That helped me figure out how to handle something.

20:02 bbloom: Foam-: and clojure is fairly different than both CL and Scheme, so it's worth studying it

20:02 fowlslegs: huh? what did i say? :-P

20:02 AeroNotix: very different from CL, dunno about scheme.

20:03 waynr: thanks AeroNotix!

20:03 AeroNotix: waynr: nw

20:03 bbloom: AeroNotix: i'd argue the otherway, hence i argue it's different from both ;-)

20:03 fowlslegs: Just the read-string/ eval combination. It gave me a good way to get around the 32-bit limit of Integer/parseINt

20:04 bbloom: fowlslegs: why not Long/parseLong ?

20:05 AeroNotix: bbloom: Ah! Imprecise wording. I meant that *I* personally don't know Scheme enough to comment on how different it is from Clojure.

20:06 bbloom: ,(Long/parseLong "100000000000") ; fowlslegs

20:06 clojurebot: 100000000000

20:06 Rosnec: as someone who came from Common Lisp to clojure, it's pretty different

20:06 AeroNotix: Rosnec: indeed

20:06 Rosnec: and Scheme and Common Lisp have a lot more in common with each other than they do with clojure

20:07 Foam-: bbloom: I understand :) It's really not a clojure issue, just a plumbing issue with the CLR port

20:07 fowlslegs: bbloom: ahh that's what dbasch must have meant yesterday.

20:07 Rosnec: actually, I originally started learning CL by watching online MIT lectures on Scheme

20:08 well, that and some google searching

20:08 bbloom: Foam-: you want this class: https://github.com/clojure/clojure-clr/blob/master/Clojure/Clojure/api/Clojure.cs

20:08 fowlslegs: bbloom: I have never seen the Long/* operators before.

20:08 bbloom: fowlslegs: they are just static methods on java.lang.Long

20:08 Foam-: the way you use clojure from c#, for instance, is you get a var by name and invoke it like a function

20:09 Rosnec: so could somebody point me to an explanation on why recur does not destructure its arguments?

20:09 until today, I would have expected this to work:

20:09 bbloom: Rosnec: recur is not a binding form

20:09 Rosnec: `(defn foo [& {:keys [b] :or {b 2}}] (if (> b 5) b (recur :b (inc b))))

20:10 Foam-: bbloom: thanks :) the implementation is a bit different from, say, ironscheme or such. I am looking at https://github.com/clojure/clojure-clr/blob/master/Clojure/Simple.Console/SimpleConsole.cs now

20:10 fowlslegs: bbloom: Are you saying operator is incorrect terminology or were you just giving me additional information?

20:10 bbloom: fowlslegs: both

20:10 Rosnec: re-read http://clojure.org/special_forms#Special%20Forms--(loop%20[bindings*%20]%20exprs*)

20:12 Foam-: what is RT and Var? is that the clojure runtime and the scope?

20:12 bbloom: Foam-: RT is just a bunch of runtime functions provided by the host language..... Var is a fundamental concept in Clojure... hence why i suggest you spend some time with clojure before embedding it

20:13 Rosnec: it just seems odd to me that I could define a function which can be called like (f :foo 3), but a recur form within f would take the form (recur {:foo 3})

20:13 bbloom: Rosnec: you have to do the destructuring in the loop form

20:14 Rosnec: loop is a binding form, recur is not

20:14 Rosnec: ohhh

20:14 now it's starting to click

20:14 yeah, I understand now

20:17 it still seems odd that the function takes different arguments from the outside than it does from recur

20:17 I previously thought that if you define a function foo

20:18 that calling (foo args) was no different than calling (recur args), aside from TCO

20:18 are there any other differences?

20:18 amalloy: Rosnec: well, the "reason" for this is that (fn foo [& xs]) is really just a method that takes one argument, xs, a list. and when you recur, you have to provide the one value it expects

20:18 Rosnec: aside from having to restructure the arguments?

20:22 fowlslegs: bbloom: Is there somewhere I can find a list of these methods where I can find out what they do without investing myself in learning Java?

20:22 bbloom: fowlslegs: http://docs.oracle.com/javase/7/docs/api/overview-summary.html have fun

20:30 visof: what this error mean Caused by: java.lang.IllegalArgumentException: No method in multimethod 'to-source' for dispatch value: class clojure.core.match.WildcardPattern ?

20:30 and how can i fiz this?

20:30 clojurebot: excusez-moi

20:30 Foam-: bbloom: turns out this is a ClojureCLR setup issue. I needed to init things first via Var.pushThreadBindings.

20:30 visof: s/fiz/fix

20:31 Foam-: bbloom: so it had nothing to do with the manner in which I was evaling from C#

20:32 visof: please anybody help

20:33 Rosnec: to-source is a multimethod, which accepts certain types of arguments

20:33 clojure.core.match.WildcardPattern is not one of them

20:33 yet you gave it one

20:33 visof

20:34 visof: Rosnec: http://pastie.org/9138021

20:34 that's the full error

20:35 so how can i fix it?

20:36 Rosnec: visof, check what it is you're giving to the to-source function

20:36 or perhaps to-source is within something else you're calling?

20:36 visof: are you directly calling to-source? if not something you're calling is calling it

20:37 visof: Rosnec: all i try to do is sample jiraph

20:38 Rosnec: visof: what do you mean by sample? do you mean you're running some examples that come with it?

20:38 I've never used jiraph before

20:41 amalloy: i think jiraph is using a version of core.match that doesn't support AOT, and you're trying to AOT-compile it

20:42 that's what the stacktrace tells me, anyway

21:12 gfredericks: ,((fn f [x] (->> (repeatedly rand) (take-while #(< % x)) (map f))) 0.9)

21:12 clojurebot: (() (() () ()))

21:33 akurilin: Ok this is strange: I will occasionally make some changes to my ring app and it will throw an exception when I make a request to it, reporting that some of my unit tests were unable to locate a namespace (which is a dependency of the test profile)

21:33 I believe by tests are loaded under the default lein profile

21:34 and I think most people keep their test deps under the :dev profile

23:10 ToxicFrog: Oh, seriously?

23:10 core.async implements its own terrible per-thread exception handler :(

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