#clojure log - Apr 15 2015

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0:00 justin_smith: ,(= (fn []) (fn []))

0:00 clojurebot: false

0:00 brainproxy_: right, the latter case makes sense to me

0:00 justin_smith: brainproxy_: metadata is not part of equality

0:02 brainproxy: ,(let [x (fn [])] (= x x))

0:02 clojurebot: true

0:02 justin_smith: that'

0:02 brainproxy: :)

0:02 justin_smith: s object idenity

0:02 which as I mentioned is the only kind of identity fn has

0:02 *equality

0:02 brainproxy: ,(+ 1 1) (+ 1 1)

0:02 clojurebot: 2

0:03 brainproxy: was testing something, have an idea

0:10 ,(do (defrecord Myfun [f] clojure.lang.IFn (invoke [_] (f))) (let [x (->Myfun (fn []))] (= x (vary-meta x assoc :a 'bc))))

0:10 clojurebot: true

0:11 brainproxy: well, obviously not a general purpose solution, but could do in a pinch

0:11 justin_smith: brainproxy: you could also put the function in a var or atom or ref or agent

0:11 and put the metadata on that container

0:11 TEttinger: meta doesn't affect equality does it?

0:12 justin_smith: TEttinger: no, but varying meta on a function makes a new function

0:12 TEttinger: oh you covered that already

0:12 ahhh

0:12 justin_smith: so it changes function equality as a side effect of that

0:16 brainproxy: justin_smith: ah good point re: var/atom

0:18 justin_smith: brainproxy: or even with your defrecord trick, that record could have been a vector, where you function is the only element

0:28 noidi: justin_smith, great explanation, thanks

0:29 justin_smith: np

4:29 zot: morning! is there a func like assoc that errors if the key already exists? i can clearly create this with merge-with, but wondered if something already exists.

4:34 to be super clear, this is what I meant to simplify:

4:35 (merge-with (fn [& _] (throw (Exception. (str "Duplicate :db/ident found: " :a)))) {:a :foo} {:a [0]})

4:59 m1dnight_: Guys, I'm looking for the term that describes how data structures (like maps) are represented in Clojure. IF you were to pass am ap and assoc to it, you would get a "new" map which shares old data with the previous data structure, but the old reference still has the old view of that data structure.

5:00 CAn anyone help me?

5:00 sm0ke: zot: i dont think so, but you can combine assoc with `contains?`

5:01 Bronsa: m1dnight_: persistent data structures with structural sharing

5:01 m1dnight_: aha! thank you bronsa

5:01 zot: sm0ke: definitely, although since I want an error, i feel like the merge-with failing fn is more elegant. i didn't write the other version to actually see it though :)

5:01 sm0ke: like ##(if (contains? {:a 1} :b) (throw (Exception. "foo")) (prn "ok")))

5:01 lazybot: ⇒ "ok" nil

5:01 m1dnight_: (inc Bronsa)

5:01 lazybot: ⇒ 104

5:04 sm0ke: ,(bean org.apache.commons.lang.SerializationUtils)

5:04 clojurebot: #error{:cause "org.apache.commons.lang.SerializationUtils", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.ClassNotFoundException: org.apache.commons.lang.SerializationUtils, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyze "Compiler.java" 6535]} {:type java.lang.ClassNotFoundException, :message "org.apache.commons.lang.SerializationUtils", :at [java.n...

5:05 zot: sm0ke: looks nice and tight there. will try the same now just for comparison. thanks :)

5:05 sm0ke: how awsome it would be if clojurebot allow adding a dependency here

5:33 darthdeus: hey guys, anyone here using core.typed? I'm having trouble finding a good way to import its namespace ... since if I just :refer :all, it will collide with the core clojure functions

5:35 oddcully: darthdeus: :as t seems quite popular

5:58 aspra: hey there! Does anyone know if https://github.com/razum2um/clj-debugger is the main debugger for Clojure atm?

6:00 razum2um: aspra: seems like it is :) I also linked to other options here: https://github.com/razum2um/awesome-clojure#debugging

6:03 aspra: razum2um: cool thx! Is there anything more than the README I can look at?

6:03 razum2um: aspra: what are you looking for?

6:04 aspra: I want to start using it - just a guide to get me started

6:05 razum2um: I want to start using it - just a guide to get me started

6:06 razum2um: aspra: basically it has only 2 functions just on top of readme. currently won't work in multithreading and no stack up/down walking :\

6:06 aspra: I've got less time for it recently, but we could improve it all together :)

6:08 aspra: the main puprose I initially did this is importing a huge dataset, where some datarows were invalid and I needed break-catch, logging was not enough

6:08 aspra: razum2um: I see :) Ok great - I will try it and come back to you!

6:09 razum2um: thx for the work

7:24 I am trying the clj-debugger. I keep getting the https://github.com/razum2um/clj-debugger/issues/11 error even though my defn is not defined in the repl. Then I cannot exit using (q). Any idea what I might be doing wrong?

8:02 clojer: Is this syntactically wrong: (let [gen (new SecureRandom) key (byte-array length)] ... ?

8:03 From https://github.com/Arcanum-XIII/buddy-liberator/blob/master/src/buddy_liberator/core/handler.clj

8:07 mavbozo: clojer, at a glance, it's alright. why? is there any compilation error?

8:08 clojer: mavbozo: Doesn't look like a proper binding.

8:09 mavbozo: Shouldn't it be: (let [gen ((new SecureRandom) key (byte-array length))]

8:13 mavbozo: clojer, i tried it with repl and your version returns an error. What do you want to achieve with your version?

8:14 sm0ke: one weird question so i have a var which contains a function how do find the namesapce of the fcuntion?

8:14 mavbozo: (new SecureRandom) returns an object, and you put the object in function position inside a list

8:14 sm0ke: ,(do (def a inc) (namespace a))

8:14 clojurebot: #error{:cause "clojure.core$inc cannot be cast to clojure.lang.Named", :via [{:type java.lang.ClassCastException, :message "clojure.core$inc cannot be cast to clojure.lang.Named", :at [clojure.core$namespace invoke "core.clj" 1530]}], :trace [[clojure.core$namespace invoke "core.clj" 1530] [sandbox$eval25 invoke "NO_SOURCE_FILE" -1] [clojure.lang.Compiler eval "Compiler.java" 6784] [clojure.lang.C...

8:16 sm0ke: ,(do (def a inc) (namespace `a))

8:16 clojurebot: "sandbox"

8:17 sm0ke: which is obvious, but can i get ##(namespace `inc)

8:17 lazybot: ⇒ "clojure.core"

8:35 aspra: razum2um: I am trying the clj-debugger. I keep getting the https://github.com/razum2um/clj-debugger/issues/11 error even though my defn is not defined in the repl. Then I cannot exit using (q). Any idea what I might be doing wrong?

8:53 geirby: oh my

8:54 have just noticed that cider updated (ns (:require with [clojure.string :as str] when I typed (str/

8:54 magic

8:56 bensu: thanks Bronsa, puredanger, lukev for reader conditionals

8:56 mavbozo: geirby, cider 0.9.0-SNAPSHOT?

8:56 geirby: yes

8:57 mavbozo: wow

8:57 bensu: and all the contributors for 1.7

8:57 mavbozo: (inc Bronsa)

8:57 lazybot: ⇒ 105

8:57 mavbozo: (inc puredanger)

8:57 lazybot: ⇒ 43

8:57 mavbozo: (inc lukev)

8:57 lazybot: ⇒ 1

8:57 bensu: I just finished the migration and it worked great

8:57 mavbozo: exactly :)

8:57 geirby: mavbozo: not sure if it was done by cider. I'm using spacemacs, may be it was some plugin

8:58 puredanger: Noooo now I lost my 42 :)

8:58 mavbozo: (dec puredanger)

8:58 lazybot: ⇒ 42

8:58 puredanger: Whew

8:59 bensu: puredanger: the only thing that broke was instaparse, and the error was already solved and documented

9:09 sobel: is there anything like afl fuzzer for clojure code?

9:19 oddcully: sobel: considered test.check?

9:31 timvisher: what is `#'var`?

9:31 and can i use it with a macro?

9:31 justin_smith: timvisher: it's a reader macro

9:31 ,#'+

9:31 clojurebot: #'clojure.core/+

9:31 justin_smith: ,(var +)

9:31 clojurebot: #'clojure.core/+

9:31 timvisher: ah

9:31 clojurebot: Gabh mo leithscéal?

9:31 timvisher: so (= #' (var ...))

9:32 justin_smith: well, (= #'foo (var foo)) yeah

9:32 timvisher: what's the word for that? qualified var?

9:33 justin_smith: timvisher: var quote

9:33 timvisher: so generally i refer to `foo` as a var

9:33 justin_smith: it's a symbol, which resolves to the value of the var

9:33 timvisher: but when i pass it to something using #'foo, what i'm passing to the thing is a ...?

9:33 justin_smith: while #'foo refers to the var itself

9:33 timvisher: ok

9:33 justin_smith: a var is a mutable container

9:34 it's the difference between passing a pointer vs. the thing itself

9:34 timvisher: ah yes, which is why when i wrap jetty around the var instead of the value, i can change the value of the var and jetty picks it up

9:34 i thought it had something to do with pass by referenc rather than by value :)

9:34 reference*

9:34 justin_smith: right - a var in function call position is implicitly dereferenced

9:34 timvisher: and yes, it is sort of a value vs. reference sort of thing

9:34 ,((var +) 1 2)

9:34 clojurebot: 3

9:34 justin_smith: implicit deref

9:35 timvisher: so, i'm trying to write a macro that will pass the war down eventually to a run-jetty call

9:35 var*

9:35 justin_smith: but note that that implicit deref is only in the calling position

9:35 timvisher: the cool thing is with a macro, you could add the (var ...) part inside the macro

9:35 timvisher: and -main is now complaining that i can't refer to an undefined var

9:35 i suppose i could give that a try :)

9:36 justin_smith: timvisher: note that this won't work with a first class function

9:36 it needs to be a def at the top level of the ns

9:36 timvisher: justin_smith: in this case it is

9:37 * justin_smith starts another full time Clojure job today.

9:39 timvisher: well, i can't get the code highlighting to work but this is what i've got so far https://gist.github.com/timvisher/1000a363e5dca3e2a01e

9:39 justin_smith: congrats!

9:40 there that's better

9:40 https://gist.github.com/timvisher/1000a363e5dca3e2a01e

9:42 justin_smith: so yeah, that looks about right, wouldn't be surprised if it worked

9:42 timvisher: it doesn't seem to :( i attached the stack i'm getting to the gist

9:42 justin_smith: maybe "handler-var" would be better named "handler-symbol"

9:42 timvisher: justin_smith: that's a good note :)

9:43 justin_smith: timvisher: ~'service-name

9:43 assuming service-name is a symbol

9:43 timvisher: service-name is a string

9:43 justin_smith: oh it's a string

9:43 never mind

9:43 timvisher: probably doesn't need to be but it is right now

9:43 justin_smith: port-arg# nrepl-port-arg# etc.

9:44 ` wants to namespace qualify your binding symbols

9:44 you need to change them by adding #

9:44 (at definition and at usage) this tells ` to generate a gensym rather than namespace qualifying the symbols

9:44 timvisher: ah

9:45 justin_smith: compare:

9:45 ,`(let [a 0] a)

9:45 clojurebot: (clojure.core/let [sandbox/a 0] sandbox/a)

9:45 justin_smith: ,`(let [a# 0] a#)

9:45 clojurebot: (clojure.core/let [a__49__auto__ 0] a__49__auto__)

9:45 justin_smith: for obvious reasons, that first version won't actually run

9:45 timvisher: indeed

9:45 justin_smith: you can't let bind a ns qualfied symbol (as that stack trace is saying)

9:45 mavbozo: justin_smith, congratulations on your new job

9:45 justin_smith: mavbozo: thanks!

9:46 it'll be more clojure, but in a field I haven't done before

9:46 so I have a lot of learning to do...

9:46 well, it's also a web server process, but there's some other fun stuff going on too that will be new to me...

9:46 timvisher: so now we're here https://gist.github.com/timvisher/1000a363e5dca3e2a01e#file-service-main-clj

9:46 still the same error

9:47 Shayanjm: justin_smith: what industry will you be working in?

9:47 timvisher: is this because i'm attempting to use destructuring?

9:47 justin_smith: Shayanjm: big data

9:47 Shayanjm: any specific vertical? 'big data' is a big place

9:47 justin_smith: timvisher: I wonder...

9:47 Shayanjm: graph analysis of social data, with a web UI for clients

9:48 timvisher: ,`(defn [& {ohai ":ohai" charnock ":charnock" :as args}] (ohai charnock args))

9:48 Shayanjm: oh nice

9:48 clojurebot: (clojure.core/defn [& {sandbox/charnock ":charnock", :as sandbox/args, sandbox/ohai ":ohai"}] (sandbox/ohai sandbox/charnock sandbox/args))

9:48 Shayanjm: a bit like my last project then

9:48 but, graph-y

9:48 timvisher: ,`(defn [& {ohai# ":ohai" charnock# ":charnock" :as args#}] (ohai# charnock# args#))

9:48 clojurebot: (clojure.core/defn [& {:as args__100__auto__, ohai__98__auto__ ":ohai", charnock__99__auto__ ":charnock"}] (ohai__98__auto__ charnock__99__auto__ args__100__auto__))

9:48 timvisher: no that looks reasonable...

9:49 assuming that :as can go first in the destructuring bind?

9:49 justin_smith: timvisher: OH

9:49 Shayanjm: justin_smith: do you have a few minutes to review some wordvomit? I'm trying to skeleton-out my blog post for that data project I was working on

9:49 justin_smith: timvisher: pass app-routes rather than app

9:50 timvisher: it's already a var, var quoting is nonsensical there

9:50 Shayanjm: would appreciate some criticism/comments on direction. It's fairly light reading because I tried to make everything as simple/accessible as possible

9:50 justin_smith: ,(var `#'+)

9:50 clojurebot: #error{:cause "clojure.lang.Cons cannot be cast to clojure.lang.Symbol", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.ClassCastException: clojure.lang.Cons cannot be cast to clojure.lang.Symbol, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyzeSeq "Compiler.java" 6732]} {:type java.lang.ClassCastException, :message "clojure.lang.Cons cannot be cast to...

9:50 justin_smith: oops

9:50 ,`(var #'+)

9:50 clojurebot: (var (var clojure.core/+))

9:50 justin_smith: that's what you were doing, and it won't work ^

9:51 timvisher: ,(let [{:as charnock ohai ":ohai" whitefield ":whitefield"} {":ohai" :a ":whitefield" :b}] [charnock ohai whitefield])

9:51 clojurebot: [{":ohai" :a, ":whitefield" :b} :a :b]

9:51 timvisher: it does seem to work

9:51 justin_smith: timvisher: no, it's because app is already a var

9:51 you can't call var on a var

9:51 timvisher: ok

9:51 justin_smith: ,(var #'+)

9:51 clojurebot: #error{:cause "clojure.lang.Cons cannot be cast to clojure.lang.Symbol", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.ClassCastException: clojure.lang.Cons cannot be cast to clojure.lang.Symbol, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyzeSeq "Compiler.java" 6732]} {:type java.lang.ClassCastException, :message "clojure.lang.Cons cannot be cast to...

9:51 timvisher: so this was working though prior to trying to macroize it

9:52 in the application the app-routes var is being further wrapped by some middleware

9:52 justin_smith: timvisher: right, before you needed to pre-var-quote

9:52 now the macro var-quotes

9:52 hmm...

9:52 timvisher: which i'm assuming doesn't return the var itself?

9:52 middleware returns a function right?

9:52 justin_smith: right

9:53 I was wrong, app should work there

9:53 timvisher: i updated the gist to be more accurate https://gist.github.com/timvisher/1000a363e5dca3e2a01e

9:53 justin_smith: ,(def f +)

9:53 clojurebot: #'sandbox/f

9:53 timvisher: (sorry, trying to obfuscate sensitive stuff :) )

9:53 justin_smith: ,(defmacro g [h] (var h))

9:53 clojurebot: #error{:cause "Unable to resolve var: h in this context", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.RuntimeException: Unable to resolve var: h in this context, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyzeSeq "Compiler.java" 6732]} {:type java.lang.RuntimeException, :message "Unable to resolve var: h in this context", :at [clojure.lang.Util run...

9:54 justin_smith: ,(defmacro g [h] `(var ~h))

9:54 clojurebot: #'sandbox/g

9:54 justin_smith: ,(g f)

9:54 clojurebot: #'sandbox/f

9:54 timvisher: that looks like about what i was seeing

9:54 justin_smith: so that works

9:54 timvisher: ah nice

9:54 so a further syntax quote

9:55 justin_smith: timvisher: you may need ~(var handler-var)

9:55 to make the defn form work

9:56 timvisher: i'm reminded of something fogus or chouser said about writing macros, which is that most people writing macros just treat the various quote and unquote functions like a salt shaker, sprinkling them at random throughout the macro until it works :)

9:56 justin_smith: ,(defmacro g [h] `(defn ~'generated [] (var ~h)))

9:56 clojurebot: #'sandbox/g

9:56 timvisher: justin_smith: net referring to you of course, but to me :)

9:56 justin_smith: ,(defmacro g [h] `(defn generated [] (var ~h)))

9:56 clojurebot: #'sandbox/g

9:56 justin_smith: timvisher: haha, indeed

9:57 I get suspicious of any nesting of quotes and unquotes

9:57 ,(g f)

9:57 clojurebot: #error{:cause "Unable to resolve var: f in this context", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.RuntimeException: Unable to resolve var: f in this context, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyzeSeq "Compiler.java" 6732]} {:type java.lang.RuntimeException, :message "Unable to resolve var: f in this context", :at [clojure.lang.Util run...

9:57 justin_smith: ,(def f +)

9:57 clojurebot: #'sandbox/f

9:57 justin_smith: ,(g f)

9:57 clojurebot: #'sandbox/generated

9:57 justin_smith: ,(generated)

9:57 clojurebot: #'sandbox/f

9:57 justin_smith: ok, so this worked

10:00 timvisher: justin_smith: i'm not sure it did. isn't there something about macros resolving vars in their namespace rather than in the var's namespace?

10:00 justin_smith: timvisher: when I take the call to control/start-service! out, it works

10:00 timvisher: just returning the hash-map

10:00 timvisher: oh well nevermind then :)

10:00 justin_smith: timvisher: I think the problem is control/start-service!

10:00 timvisher: as in that's the qualified var it can't find?

10:00 justin_smith: because that's the only change I made from your code as of the last paste

10:00 timvisher: has to be

10:01 timvisher: that's possible

10:01 in this instance, the macro is in the same ns as the function i'm calling

10:01 justin_smith: because it works in my repl if I take that reference out and return the hash-map

10:01 than don't qualify it!

10:01 ` ns-qualifies things for you

10:01 timvisher: i just realized that :)

10:02 how many fake internet points would you like? ;)

10:02 justin_smith: haha

10:02 mavbozo: more than raynes?

10:03 timvisher: (identify raynes)

10:03 (identity raynes)

10:03 lazybot: raynes has karma 55.

10:03 timvisher: who was it last night that had triple digits?

10:03 oh yeah

10:03 amalloy

10:03 justin_smith: amalloy, technomancy, and myself all are in the 3 digits

10:04 oh, and gfredericks

10:04 $karma gfredericks

10:04 lazybot: gfredericks has karma 135.

10:04 justin_smith: $karma amalloy

10:04 lazybot: amalloy has karma 257.

10:04 justin_smith: $karma technomancy

10:04 lazybot: technomancy has karma 163.

10:04 justin_smith: $karma justin_smith

10:04 lazybot: justin_smith has karma 239.

10:04 zerokarmaleft: ooh, catching up

10:05 mavbozo: $karma Raynes

10:05 lazybot: Raynes has karma 55.

10:05 mavbozo: case-insensitive i see

10:13 timvisher: justin_smith: huh. i can't get this to work even removing the call to `start-service!`...

10:13 can you pastebin the version you said worked?

10:13 because you already do enough of my job for me :)

10:18 justin_smith: timvisher: this version works https://www.refheap.com/99635

10:19 next is for you to figure out how to refer to start-service!

10:20 always so excited about side effects around here

10:22 timvisher: bizarre...

10:22 this is why i never write macros...

10:24 "make it a little easier on your fellow devs... have some sweet syntax... have a few laughs..." http://imoviequotes.com/wp-content/uploads/2014/11/3-Die-Hard-quotes.gif

10:25 oh jeez. -main is being ns qualified...

10:25 so how i do i get that specific name to be in the resulting expansion?

10:26 justin_smith: timvisher: haha ~'-main

10:26 for some reason I did not have that problem, weird

10:27 timvisher: interesting... the macroexpansion 'inlines' (?) the (var ...) call to #'app

10:27 noncom: does anybody know some solution to reduce startup time of aleph?

10:27 justin_smith: timvisher: #'app is how (var app) prints

10:28 timvisher: oh interesting

10:28 i know so litle about the reader/printer

10:29 justin_smith: ,(var +)

10:29 clojurebot: #'clojure.core/+

10:29 timvisher: ok! feeling good about this restart :)

10:34 the war is over ender... we won...

10:34 at what cost?

10:34 ...

10:34 zerokarmaleft: eh, he gets over it over the next three books :P

10:43 timvisher: (inc justin_smith)

10:43 lazybot: ⇒ 240

10:43 timvisher: (inc justin_smith)

10:43 lazybot: ⇒ 241

10:43 timvisher: (inc justin_smith)

10:43 lazybot: ⇒ 242

10:43 timvisher: gotta be worth at least three

10:43 justin_smith: want to come work in philly? :)

10:44 justin_smith: timvisher: I appreciate the offer, but Portland is pretty awesome, and I just got this job

10:44 timvisher: justin_smith: heh. understood :)

10:44 gotta love that concrete

10:46 TEttinger: what happened, haha

10:46 virmundi: are there any good tutorials for advanced compojure techniques? I just realized that I can have /resource/:id, and the :id be missing. as such a 404 should occur. Easy enough if I have just a few routes, but it would be a pattern.

10:50 noncom: if smb is interested on the q about aleph i asked a few minutes ago, here's what: http://dev.clojure.org/jira/browse/CLJ-1529

10:54 timvisher: virmundi: maybe the luminus docs?

10:54 compojure is great while things are small by imo it breaks down _hard_ when you get more complex

10:58 virmundi: timvisher: I’ll take a look

10:58 noncom: does anyone use clojure 1.7.0-beta1 already?

11:11 CookedGryphon: hey, can anyone explain to me why Transit takes a ByteArrayInputStream argument to its reader?

11:11 how am I supposed to get the benefits of keyword caching etc. over a stream of data if I need to recreate the reader every time?

11:13 on the writer side, I can at least call reset() on the bytearrayoutputstream and write new data to it if needs be, but I have no way of putting new data into the reader without creating a new reader, or going to all the faff of making a new type of input stream (which is hell in clojure, with it being an abstract class rather than an interface)

11:14 dnolen: CookedGryphon: that's just how caching is supposed to work, you can't safely share caches across reads anyway

11:15 TEttinger: https://docs.oracle.com/javase/8/docs/api/java/io/ByteArrayOutputStream.html it appears there is a .reset

11:17 CookedGryphon: TEttinger: yeah, I can do that on the write side, but it's not thread safe

11:17 but on the read side, I can't do anything

11:17 TEttinger: ah.

11:17 yeah you shouldn't be able to send something that causes the reader to forget everything it read...

11:18 CookedGryphon: dnolen: is there a reason for that? I would have thought if you're creating a reader, you can manage a session to the extent that you know what the other end has seen from you already, in which case why not share cache values?

11:19 TEttinger: there's also a reset for input https://docs.oracle.com/javase/8/docs/api/java/io/ByteArrayInputStream.html#reset--

11:19 CookedGryphon: TEttinger: yeah, but all that allows you to do is read the same data again

11:20 TEttinger: not if you mark when you reset the writer

11:20 CookedGryphon: dnolen: my particular use case, I am opening a websocket and want a reader/writer for the lifetime of that socket, why wouldn't it be safe to use cached keywords during that session?

11:21 TEttinger: https://docs.oracle.com/javase/8/docs/api/java/io/ByteArrayInputStream.html#mark-int- this should let you reset to a later point in the stream

11:23 ah, but you want different data to be read in, I guess? I think that it will keep reading and adding in input at the end

11:23 since it can't be closed

11:32 CookedGryphon: Yeah, I really want streams to be core.async channels

11:32 and they just aren't

11:36 timvisher: ugh... round-trip on uberjar testing is _slooooooow_

11:37 CookedGryphon: i have some memory of aleph support attaching a core.async channel to a websocket?

11:37 does that sound like anything to anybody? :)

11:37 mpenet: timvisher: via manifold probably

11:37 jet has websocket support using core.async as well (both client/server)

11:38 CookedGryphon: so I'm using chord

11:38 and that has core.async websocket support, clj and cljs, and it's great

11:38 it even has a transit mode,

11:39 but the formatter creates a new writer for every outbound message and a new reader for every inbound message

11:39 when I really want for the lifetime of the websocket to use keyword caching and a single reader/writer.

11:39 muraiki: I've used websockets in httpkit with core.async, but I don't know what it does in terms of writers/readers

11:40 CookedGryphon: so I tried to make the change to the formatter, and in cljs it's not a problem, but the clj version has these ByteArray<in/out>putStreams

11:42 kolov: cemerick, thanks for the help with friend & google oauth2 yesterday. https://github.com/ddellacosta/friend-oauth2 workflow works fine, I migrated my app to oauth2.

11:43 cemerick: kolov: great, glad it worked out :-)

11:44 kolov: it would probably be useful to others if you could document the migration process/changes, would be happy to have a friend wiki page on this if you're willing

11:44 timvisher: so my understanding of transitive deps is clearly broken

11:45 when i `lein run` a thing, all transitive deps seem to be present. but when i go to `lein uberjar` the thing, it seems like anything i didn't specify explicitly in my deps dissapears

11:45 which can't be right, can it?

11:45 kolov: cemerick: I'll leave a comment at https://github.com/cemerick/friend/issues/117

11:46 mpenet: timvisher: sounds odd... you're using checkouts?

11:46 timvisher: mpenet: i do, but not in this instance

11:47 mpenet: timvisher: I never had this issue

11:47 timvisher: mpenet: i haven't either...

11:47 not to my knowledge at least

11:48 so i've got a shared lib which depends _explicitly_ on cider-nrepl, and _transitively_ on tools.nrepl

11:48 i've got my service which depends explicitly on the shared-lib

11:48 lein deps :tree reports all the deps

11:49 but lein uberjar can't find `clojure/tools/nrepl/server...` on the classpath

11:51 i mean, i'm fine with adding the dep, but i don't understand why it's necessary

11:52 mpenet: the dep is in a dev/test profile?

11:52 timvisher: mpenet: nope. top level `:dependencies`

11:53 there doesn't appear to be anything weird about the dep in cider-nrepl either https://github.com/clojure-emacs/cider-nrepl/blob/0f189d6881352f584dbbbdcb47272ccfaf1ed25a/project.clj#L15

11:55 ghadishayban: is there any known trouble with calling (require 'somens) inside futures to get an application started up faster?

12:03 Bronsa: ghadishayban: might interact badly with defmethod/extend

12:03 timvisher: hah. `lein classpath` even reports that the dep is there...

12:05 puredanger's tip about jar contents is also a swing and a miss, the jar contains the stuff i think it does

12:18 i'm completely baffled by this behavior. is there a difference between the compiletime dependencies and the dependencies included in the uberjar?

12:19 i'm wondering now if this is a lein version problem? it has to be simpler than that though

12:21 lemonodor: maybe `lein with-profile uberjar deps :tree` might show something different?

12:38 sdegutis: Do any've y'all who've a Clojure web app 'nd deploy it to EC2 use Docker or Vagrant or anything else to manage it?

12:39 lemonodor: I used elastic beanstalk, and just created WARs with lein-awsuberwar

12:42 bensu: sdegutis: I use Docker

13:01 noncom: dowa anyone use clojure 1.7.0-beta 1 lready?

13:02 TEttinger: ,*clojure-version*

13:02 clojurebot: {:major 1, :minor 7, :incremental 0, :qualifier "master", :interim true}

13:02 TEttinger: it's pretty likely that clojurebot uses it

13:02 or something newer

13:02 are you having issues with it, noncom?

13:03 noncom: i'd say just a question: https://www.refheap.com/99638

13:03 see the differences on starting my project in the two versions?

13:03 1) namespace object is strange in 1.7.0

13:04 2) warnings are not suppressed?

13:04 can you maybe comment on that? (just to know what's going on)

13:08 TEttinger: right, noncom: update is new in 1.7.0 as a clojure.core fn

13:09 mavbozo: ,(doc update)

13:09 clojurebot: "([m k f] [m k f x] [m k f x y] [m k f x y ...] [m k f x y ...]); 'Updates' a value in an associative structure, where k is a key and f is a function that will take the old value and any supplied args and return the new value, and returns a new structure. If the key does not exist, nil is passed as the old value."

13:09 TEttinger: and there's a different printer for objects

13:09 ,(print (java.util.HashMap.))

13:09 clojurebot: #object[java.util.HashMap {}]

13:09 TEttinger: &(print (java.util.HashMap.))

13:09 lazybot: ⇒ #<HashMap {}>nil

13:10 TEttinger: ,#object[java.util.HashMap {}]

13:10 clojurebot: #<RuntimeException java.lang.RuntimeException: No reader function for tag object>

13:10 TEttinger: hm

13:10 why do we have this object reader syntax again?

13:11 bacon1989: TEttinger: think it's for the EDN format, so you can write custom readers to produce the desired Record from external data

13:12 noncom: ok, i got it about (update), really, ew only had (update-in) before...

13:12 TEttinger: yep, we really did

13:12 kinda nuts

13:12 noncom: but as for the object...

13:12 maybe it's what bacon1989 says...

13:12 puredanger: TEttinger: the new syntax can be read by the reader, the old could not

13:13 TEttinger: puredanger, but... it didn't get read

13:13 puredanger: it *can* be read, but no default reader is defined for it

13:13 TEttinger: tag object doesn't have a reader function, should it?

13:14 puredanger: what would you do with it if you had it?

13:17 TEttinger: puredanger: probably try to deserialize the stuff that comes with the object (the {} there), and/or call the zero arg constructor if present

13:18 is there an edn serializer for POJOs yet?

13:18 puredanger: the {} is the toString - this seems like an older version btw, as it now also includes the hash explicitly

13:20 Shayanjm: ping arrdem

13:21 puredanger: ,(prn (java.util.HashMap.))

13:21 clojurebot: {}\n

13:21 Shayanjm: ,(doc prn)

13:21 clojurebot: "([& more]); Same as pr followed by (newline). Observes *flush-on-newline*"

13:21 Shayanjm: oic

13:21 TEttinger: ,(doc pr)

13:21 clojurebot: "([] [x] [x & more]); Prints the object(s) to the output stream that is the current value of *out*. Prints the object(s), separated by spaces if there is more than one. By default, pr and prn print in a way that objects can be read by the reader"

13:22 TEttinger: hm

13:22 puredanger: pr/prn are for printing as readable data

13:22 print/println are for humans

13:22 Shayanjm: noted

13:22 TEttinger: then what's this new less readable sometimes #object syntax?

13:22 mavbozo: ,(println (java.util.HashMap.))

13:22 clojurebot: #object[java.util.HashMap {}]\n

13:23 noncom: so now we now that's an object :)

13:23 puredanger: that's for printing as data when it has no defined printer as data - interestingly it looks like print-dup and print-method differ here in how they handle Java collections, so this is kind of a weird corner

13:23 TEttinger: ah

13:24 Bronsa: all the differences between pr/str/print + *print-dup* always confused me

13:24 Shayanjm: TIL

13:24 mavbozo: ,(prn 'a-symbol)

13:24 puredanger: ,(pr (java.awt.Color/BLACK))

13:24 clojurebot: a-symbol\n

13:24 #error{:cause "Could not initialize class java.awt.Toolkit", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.NoClassDefFoundError: Could not initialize class java.awt.Toolkit, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyzeSeq "Compiler.java" 6732]} {:type java.lang.NoClassDefFoundError, :message "Could not initialize class java.awt.Toolkit", :at [java...

13:24 puredanger: ha

13:25 mavbozo: ,(println 'a-symbol)

13:25 clojurebot: a-symbol\n

13:26 mavbozo: ,(prn (get get get get))

13:26 clojurebot: #object[clojure.core$get "clojure.core$get@38c44e0e"]\n

13:26 mavbozo: ,(println (get get get get))

13:26 clojurebot: #object[clojure.core$get clojure.core$get@38c44e0e]\n

13:26 puredanger: yeah, functions are a good example

13:27 noncom: but adventures continue! https://www.refheap.com/99639

13:27 look at lines 10 and 11

13:27 puredanger: but on beta1 you should see something like this for (pr get): #object[clojure.core$get 0x58915a1a "clojure.core$get@58915a1a"]

13:27 class hash toString

13:28 ,*clojure-version*

13:28 clojurebot: {:major 1, :minor 7, :incremental 0, :qualifier "master", :interim true}

13:28 puredanger: must be an old version of master - that's weird

13:29 I guess maybe clojurebot was started with master before beta1 or something?

13:29 ,(class (range 5))

13:29 clojurebot: clojure.lang.LazySeq

13:29 puredanger: yeah, definitely pre-beta1

13:30 noncom: mine shows

13:30 => *clojure-version*

13:30 {:major 1, :minor 7, :incremental 0, :qualifier "beta1"}

13:30 => (class (range 5))

13:30 clojure.lang.LongRange

13:30 puredanger: yeah, what clojurebot is showing is a master-SNAPSHOT, but it not current

13:30 noncom: well, ok..

13:31 what about lines 10 and 11 here? ttps://www.refheap.com/99639

13:31 puredanger: the :interim true up there means it's a snapshot

13:31 noncom: those are long-standing reflection warnings in those libs - I think some of them have newer versions where they've been fixed

13:33 hiredman: ,(class (range 5))

13:33 clojurebot: clojure.lang.LongRange

13:34 puredanger: hey look :)

13:34 noncom: wow

13:34 ,(class (range 5))

13:34 clojurebot: clojure.lang.LongRange

13:34 puredanger: ,(pr get)

13:34 clojurebot: #object[clojure.core$get 0x35bcc9ae "clojure.core$get@35bcc9ae"]

13:34 noncom: *clojure-version*

13:34 ,*clojure-version*

13:34 clojurebot: {:major 1, :minor 7, :incremental 0, :qualifier "master", :interim true}

13:34 noncom: wtf

13:35 puredanger: I assume hiredman did a bounce :)

13:35 hiredman: I did, I restarted the eval service with a newer version

13:35 puredanger: master currently matches beta1

13:35 mavbozo: cool

13:36 ,(prn (get get get get))

13:36 clojurebot: #object[clojure.core$get 0x35bcc9ae "clojure.core$get@35bcc9ae"]\n

13:36 noncom: cool!

13:36 mavbozo: ,(print (get get get get))

13:36 clojurebot: #object[clojure.core$get 0x35bcc9ae clojure.core$get@35bcc9ae]

13:38 TEttinger: ,(def get ([] get) ([& get] get get))

13:38 clojurebot: #error{:cause "Too many arguments to def", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.RuntimeException: Too many arguments to def, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyzeSeq "Compiler.java" 6740]} {:type java.lang.RuntimeException, :message "Too many arguments to def", :at [clojure.lang.Util runtimeException "Util.java" 221]}], :trace [[cl...

13:39 TEttinger: ,(defn get ([] get) ([& get] get get))

13:39 clojurebot: #error{:cause "denied", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.SecurityException: denied, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyzeSeq "Compiler.java" 6740]} {:type java.lang.SecurityException, :message "denied", :at [clojurebot.sandbox$enable_security_manager$fn__835 invoke "sandbox.clj" 69]}], :trace [[clojurebot.sandbox$enable_securit...

13:39 TEttinger: ha

13:53 sdegutis: Sorry, I disconnected. D'anyone say anythin' 'n regards t' my question about deploying t' EC2?

13:54 I only saw the first two responses, respectively from lemonodor and bensu.

13:54 lemonodor: so you don't use nginx or anything besides a single UBER-WAR?

13:55 xemdetia: sdegutis, I spent at least half a minute trying to parse 3 messages back

13:55 sobel: anyone here use clojure-nginx?

13:58 ircxy: concurrency Q: I'd like to manage a max number of a db column for more than 1 db env. I'd like to call a func or lazy-seq to get the next value passing a map containing the db-env. {:db-env :test} initially the map is empty. When the env key is not found, Q db, init the atom. Any tips?

13:58 Looking at dosync with if-let

14:00 small-chimp: burn all jews in oven

14:00 sieg heil

14:00 sdegutis: xemdetia: sorry 'bout that, I s'pose contractions 'n' abbreviations don't work quite so well here as the'do in real life.

14:00 small-chimp: death to infidels

14:00 allahu akhbar

14:00 burn all jews in oven

14:00 sobel: yes. use a sequence in your database.

14:01 sdegutis: sobel: nope, why d'y' ask?

14:01 Bronsa: amalloy:

14:01 sobel: sdegutis: hoping to find a success story with the latest version. i can't get it to twitch under the microscope.

14:01 Bronsa: sdegutis: please stop. it's pointless and makes your phrases hard to read

14:02 sdegutis: Bronsa: you're the boss.

14:02 small-chimp: DEATH TO JEWS

14:02 CLOJURE IS AN INFIDEL PROGRAMMING LANGUAGE

14:02 ALLAHU AKHBAR

14:02 Bronsa: puredanger: you here?

14:02 puredanger: yeah, hang on

14:02 sobel: ircxy: don't try to keep track of things in the database that are already kept track of in the database.

14:03 mavbozo: ircxy, you only query the max-number of column once during your app startup?

14:03 sobel: ircxy: if you need a serial value, use it in your sql expressions. that is regular/appropriate use.

14:03 oddcully: small-chimp: your last nick was more funny

14:03 ircxy: mavbozo: yes, actually the first time someone calls the next function.

14:04 Bronsa: sdegutis: not trying to be bossy but it's seriously irritating and I'm sure you're aware of it. no idea why you sometimes try to be willfully annoying

14:04 sobel: ircxy: why do you need that value?

14:04 Bronsa: the burden of communication is on the speaker. let the problems he creates rest on his shoulders.

14:04 small-chimp: HELP I WOULD LIKE TO LEARN CLOJURE BUT I AM TOO STUPID

14:04 HELP PLEASE

14:04 sobel: Bronsa: rather than asking us to carry them, as well ;)

14:04 ircxy: sobel: like DB sequence number, but for a group of inserts

14:04 pbx: no ops here eh?

14:05 small-chimp: HELP HOW CAN I BECOME A DATABASE

14:05 sobel: /ig small-chimp

14:05 and be done

14:05 mavbozo: done

14:05 sdegutis: Bronsa: to be honest I was just trying to have a little harmless fun; but I keep forgetting that every single time I try to add a little harmless fun into my communications on IRC in #clojure, you get very very very annoyed at it; my apologies for forgetting to be sensitive to your needs

14:05 oddcully: none of the bots have some vote kill feature?

14:05 sobel: ircxy: right, it's a concurrency problem right there if you are sending seq numbers from your app. it's safer to use a "next seq" expression in the sql code.

14:06 ircxy: s/safer/safe.

14:06 sdegutis: small-chimp: touché

14:06 sobel: ircxy: in other words, when you copy a seq value from your database, you have created the concurrency problem.

14:06 small-chimp: HELP HOW CAN I LEARN FUNCTIONAL PROGRAMMING HELP PLEASE

14:06 ircxy: sobel: can't. I'm inserting a group of X rows that are related. They all need the same number. think batch id.

14:07 small-chimp: EVERYTHING IS A FUNCTION THAT IS SOMETHING I THINK UH THAT I COULD THINK ON ACID

14:07 oddcully: aaaand good bye

14:08 ircxy: sobel: understood. Theoretically this is true, no Q. But this server as the only access for inserting.

14:08 mavbozo: ircxy, have you considered using stored-procedure?

14:08 sdegutis: small-chimp: you make a very compelling and reasonable point in that we shouldn't try to amuse ourselves without regard or consideration for others around us; thank you for your subtle but effective nudge

14:08 sobel: ircxy: so inserting then updating all new rows to the (same) next_seq value wouldn't be allowed

14:09 ircxy: sobel: so each thread would get the next value and insert it's batch with the next number.

14:09 sobel: that sounds like a shite db arrangement. sorry to hear it. :)

14:09 sdegutis: Bronsa: after reading small-chimp's message between the lines, I now understand that I was the one wrong this whole time; I'm sorry for annoying you with my so-called "harmless" fun.

14:10 Bronsa: sdegutis: I don't remember all those times I complained about you that you seem to imply. Also please stop this passive-aggressive trolling.

14:10 mgaare: sdegutis: how's the view from up there on hte cross?

14:10 small-chimp: what!? but i never meant any offense or disrespect

14:10 ircxy: sobel: simply the inserted batch rows are logically related, this single number ties them together.

14:11 dmead: hi channel. can i still use slime with swank-clojure? or do i have to use nrepl

14:11 i'm having a problem getting slime to talk to clojure

14:11 Bronsa: puredanger: surely #clojure!*@* +b!*@* small-chimp!*@*

14:11 sdegutis: Bronsa: based on your response you must have completely misunderstood what I was saying

14:11 sobel: ircxy: ok, so you need a value nailed down that is transactional. a sequence will not be, for obvious reasons.

14:11 puredanger: Bronsa: eh?

14:11 Bronsa: puredanger: surely #clojure!*@* +b!*@* small-chimp!*@* have done nothing wrong :)

14:11 sdegutis: mgaare: I'm sure that's meant to be an insult of some kind, but I really don't get it

14:11 Bronsa: puredanger: you messed up the ban command :P

14:12 TimMc: That bans everyone, right?

14:12 sdegutis: Anyway, anyone else use Docker, Vagrant, or other, and have reason to prefer it over the others?

14:12 puredanger: yeah, I probably did

14:12 help?

14:12 clojurebot: Nobody can help with "X doesn't work". Please provide context: what you did, what you hoped would happen, and what happened instead. A stack trace is especially helpful, if applicable.

14:12 sobel: ircxy: could you use a temp table to stage your import? would a UUID be just as good or does someone else depend on having continuously increasing integers for import ids?

14:12 Bronsa: puredanger: /mode #clojure -bb #clojure!*@* +b!*@*

14:12 TimMc: not that I understand IRC ban syntax, because I don't

14:12 sdegutis: I don't know anyone who does, it's completely confusing.

14:13 TimMc: I've never seen documentation for it, though I've looked.

14:13 puredanger: Bronsa: what does all that mean?

14:13 Bronsa: puredanger: hang on, you're not opped so that won't work

14:13 ircxy: sobel: no requirement for inc numbers. Was thinking UUID as well.

14:13 puredanger: I think I am opped?

14:13 sdegutis: puredanger: you are

14:13 sobel: ircxy: i would go with that, and not try to sync a data structure with db sequences

14:13 oddcully: hes channel op

14:14 puredanger: this is like giving your keys to a 5 year old :)

14:14 sobel: ircxy: that way your import process starts with reading a fresh uuid then inserting with that value for the batch

14:14 Bronsa: puredanger: oh you are, erc is dumb then

14:14 puredanger: that removes the two wrong bans you added to the banlist

14:14 sobel: ircxy: it's probably the simplest concurrent way to do this

14:14 Bronsa: +b

14:15 (inc puredanger)

14:15 lazybot: ⇒ 43

14:15 sobel: (inc sobel)

14:15 lazybot: You can't adjust your own karma.

14:15 sobel: !!!!!!

14:15 mavbozo: (dec puredanger)

14:15 lazybot: ⇒ 42

14:15 ircxy: sobel: surely a lot simpler, to create a uuid

14:15 mavbozo: keep it 42

14:15 TimMc: local maximum

14:15 sobel: (inc Bronsa )

14:15 lazybot: ⇒ 3

14:15 sobel: i only inc the with-spaces version.

14:16 (div 2 Bronsa)

14:16 TimMc: $karma Bronsa

14:16 lazybot: Bronsa has karma 105.

14:16 sobel: $karma Bronsa

14:16 lazybot: Bronsa has karma 105.

14:16 sobel: $karma Bronsa

14:16 lazybot: Bronsa has karma 105.

14:16 TimMc: with-spaces, is that like the evin-twin version?

14:16 sobel: apparently it trims whitespace. however will i query the with-space version.

14:16 TimMc: right down to the goatee

14:17 $karma "Bronsa "

14:17 lazybot: "Bronsa " has karma 0.

14:17 sobel: $karma 'Bronsa '

14:17 lazybot: 'Bronsa ' has karma 0.

14:17 sobel: $karma Bronsa\

14:17 lazybot: Bronsa\ has karma 0.

14:17 Bronsa: sobel: please stop highlighting me

14:17 sdegutis: Bronsa: sorry

14:17 sobel: Bronsa: will try

14:18 do the karma inquiries highlight you?

14:18 noprompt_: is there anything i need to enable to get #? working in the repl?

14:18 timvisher: i do understand lein uberjar right in that it should package transient dependencies up with the jar?

14:18 noprompt_: i get a rt exception saying the conditional read isn't allowed. :/

14:19 timvisher: ah https://github.com/technomancy/leiningen/issues/1762#event-194323170

14:20 sobel: transitive <> transient ;)

14:21 timvisher: sobel: not sure i follow

14:21 sdegutis: I'm looking to upgrade from 1.5.1 to 1.7. Are transients pretty much the only new interesting feature in this version jump?

14:21 puredanger: noprompt_: in beta1, reader conditionals won't work in the repl. with next release (beta2?) CLJ-1700 will enable that

14:22 timvisher: https://github.com/technomancy/leiningen/issues/1771

14:22 that's pretty much my situation exactly

14:22 puredanger: noprompt_: you can invoke the reader directly with read or read-string though

14:22 ,(read-string {:read-cond :allow} "#?(:clj "hi" :default "there")")

14:22 clojurebot: #error{:cause "Unable to resolve symbol: hi in this context", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.RuntimeException: Unable to resolve symbol: hi in this context, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyze "Compiler.java" 6543]} {:type java.lang.RuntimeException, :message "Unable to resolve symbol: hi in this context", :at [clojure.lang...

14:23 noprompt_: puredanger: right. i was simply looking forward to interacting with it. :)

14:23 puredanger: ah, quoting bad

14:23 ,(read-string {:read-cond :allow} "#?(:clj :hi :default :there)")

14:23 clojurebot: :hi

14:24 puredanger: sdegutis: are you talking about Clojure versions?

14:24 if so, see: https://github.com/clojure/clojure/blob/master/changes.md

14:25 Bronsa: sdegutis: transducers not transients. also another big 1.7 feature is reader conditionals

14:26 ,(read-string {:read-cond :allow} "#?@(:clj [1 2])")

14:26 clojurebot: 1

14:26 Bronsa: puredanger: ^ I have a patch for t.reader that makes that an error -- is it be reasonable?

14:26 puredanger: would mimick ##`~@()

14:27 ,`~@()

14:27 clojurebot: #<IllegalStateException java.lang.IllegalStateException: splice not in list>

14:27 TEttinger: what on earth...

14:27 #?@ does what exactly?

14:28 trigraphs are getting a bit... much IMO

14:28 sdegutis: Bronsa: oh nice!

14:28 TEttinger: I was pretty happy when my macro macro got working with ~'~ in there

14:28 sdegutis: puredanger: yes sorry

14:29 Are reader conditionals the new alternative to Cljx?

14:34 Off topic, but the Reader Conditionals feature made me wonder if it would be worthwhile to write a Clojure compiler in Haskell using parsec that has different back-ends for emitting different bytecode (JVM, JS, CLR, YARV, etc).

14:35 The main downside I suppose would be that the macro-expansion runtime would need to be entirely written in Haskell.

14:47 puredanger: Bronsa: sorry, was otp

14:48 sdegutis: see http://dev.clojure.org/display/design/Reader+Conditionals

14:49 sdegutis: Oops got disconnected again.

14:50 puredanger: Bronsa: on your question, I'm not sure that's generally correct. shouldn't 2 be available to be read next? I'm not sure we've talked about this case.

14:50 Bronsa: puredanger: with how it's currently implemented, it's impossible

14:50 sdegutis: TEttinger: #?@ is splicing, kind of like in macros.

14:50 TEttinger: ah

14:50 puredanger: sdegutis: see http://dev.clojure.org/display/design/Reader+Conditionals

14:50 sdegutis: ,#?(:clj :foo :cljs :bar)

14:50 clojurebot: #<RuntimeException java.lang.RuntimeException: Conditional read not allowed>

14:51 puredanger: it won't work in here "at the repl" until next release

14:51 you have to invoke the reader via read-string:

14:51 ,(read-string {:read-cond :allow} "#?(:clj :foo :cljs :bar)")

14:51 clojurebot: :foo

14:52 puredanger: in next release, what you did will work though

14:52 reader conditionals are only allowed in .cljc files, not in .clj or .cljs

14:52 Bronsa: puredanger: to make that work we'd have to save pending-forms in the reader

14:52 puredanger: yeah

14:53 we actually talked about an alternate implementation that would wrap the pbr and buffer forms instead of passing them around as we do now

14:53 that's prob a cleaner impl and could probably be used to allow this

14:53 Bronsa: puredanger: which might not be possible -- read just requires a j.io.pbr

14:54 puredanger: anyhow, I can read your case above as a valid result as it currently stands

14:54 it's probably best to file it as a CLJ ticket so we can discuss and decide there?

14:55 sdegutis: ,(read-string {:read-cond :allow} "(+ #?@(:clj [1 2 3] :cljs [4 5 6]))")

14:55 clojurebot: (+ 1 2 3)

14:56 sdegutis: /cc TEttinger

14:56 TEttinger: aaaah

14:56 nice

14:58 sdegutis: I'm not sure I see a point to that tbh.

14:58 puredanger: the splicing one comes in handy in ns macros to splice in different libs for clj vs cljs

14:59 sdegutis: Ooh.

15:01 I'm approaching Clojure web apps in a new way now, where the Clojure part is just a microservice that offers an EDN-based API, and ClojureScript handles most of the heavy lifting.

15:03 In this approach, Nginx serves a static HTML file for all routes that don't start with "/api/", and this static HTML file references the ClojureScript file (served via CDN), which then handles all the routing via Reagent, and pings the backend via /api/* routes.

15:03 But this relies heavily on features of Nginx for the sake of speed, e.g. minimal delay between client's request and server's response, and thus it's not really an isolated application.

15:03 Bronsa: ,(def a (java.io.PushbackReader. (java.io.StringReader. "#?(:clj [1 2])")))

15:04 clojurebot: #'sandbox/a

15:04 Bronsa: ,(read a)

15:04 clojurebot: #error{:cause "Conditional read not allowed", :via [{:type java.lang.RuntimeException, :message "Conditional read not allowed", :at [clojure.lang.Util runtimeException "Util.java" 221]}], :trace [[clojure.lang.Util runtimeException "Util.java" 221] [clojure.lang.LispReader$ConditionalReader checkConditionalAllowed "LispReader.java" 1412] [clojure.lang.LispReader$ConditionalReader invoke "LispReade...

15:04 Bronsa: ,(read a)

15:04 clojurebot: (:clj [1 2])

15:04 sdegutis: That's why I'm looking into Docker/Vagrant/etc... but I'm wondering, maybe this isn't the best way to handle this?

15:04 Bronsa: :P

15:04 pmonks: sdegutis: have you considered OSv?

15:04 There are some Clojure examples out there (e.g. Reimmann)

15:05 http://osv.io/

15:05 https://github.com/cloudius-systems/osv/wiki/Porting-Clojure-applications-to-OSv

15:05 Note: assumes you have a hypervisor to run on (AWS or whatever).

15:06 I also did a little Clojure webapp on Heroku a while back. That was a reasonably nice experience.

15:08 sdegutis: pmonks: thanks I'll look at that

15:08 Bronsa: why did that work the second time??

15:08 lazybot: sdegutis: Uh, no. Why would you even ask?

15:09 pmonks: sdegutis: np note that OSv is still a beta, so ymmv...

15:09 I'll admit to being a bit of a gushy fanboi about it though. ;-)

15:10 Bronsa: sdegutis: it didn't really

15:11 sdegutis: it returned an exception the first time and a wrong result the second time b/c only part of the input had been consumed

15:12 lemonodor: sdegutis: correct, no nginx, just an uberwar running in tomcat

15:12 sdegutis: pmonks: that is valuable information and gives me perspective on your comments, thanks

15:12 Bronsa: puredanger: maybe it should be better to consume the coll before throwing an exception in that case?

15:12 sdegutis: Bronsa: ahhhh

15:12 Bronsa: mutation!

15:12 lemonodor: sounds kind of convenient but also slow to serve static assets

15:13 lemonodor: yes, this is for an API with no real static resources

15:13 sdegutis: lemonodor: great, thanks

15:39 sveri: Hi, using clojures multimethod can I do a dispatch on either or something? maybe something like: (defmethod foo (or :varchar :char) [arg]....?

15:40 amalloy: sveri: no, but the body of a defmethod can just call some other function. or you can use namespaced keywords and derive them

15:40 tbaldrid_: sveri: look at heirarchies: http://clojure.org/multimethods

15:40 can possibly do what you want

15:41 sdegutis: Is a Jetty/ring app actually really slow to serve assets?

15:42 sveri: tbaldrid_: thanks, I play around with that approach

16:03 bacon1989: sveri: what're suggesting seems like a problem I ran into

16:03 I ended up using core.match with a seq

16:05 Here's an example. It's a bit messy, but you can pattern match to specific sequences. In your case, you would treat the arguments as a sequence.

16:05 https://github.com/benzap/baconbot/blob/master/src/baconbot/games/rpg/core.clj#L26

16:05 come to think of it, I wouldn't consider it for what you're doing

16:27 szatz: is it possible to use an instance of a record as a key in a map? when i'm trying, it's using the keys of the record as the keys for the map.

16:30 lawandand: Is there any plan to implement clojure in some lisp dialect?

16:30 puredanger: szatz: yes

16:31 lawandand: one of Rich's early precursors of Clojure was written in CL

16:31 http://jfli.sourceforge.net/ I think

16:32 but there are no plans to implement Clojure as it currently stands in a Lisp platform

16:32 szatz: puredanger: aha, just figured it out. thanks for the confirmation!

16:32 lawandand: Perhaps immutability is a barrier, but racket also use a little of it

16:34 just out of curiosity, do people use java libraries with clojure or that is not very typical

16:35 bacon1989: lawandand: all the time

16:35 szatz: lawandand: i know that i do quite a bit.

16:35 bensu: lawandand: many useful libraries are wrappers around java

16:35 https://github.com/dakrone/clj-http

16:36 lawandand: people in common-lisp are developing their own libraries for example there are many for http, I wonder if using java is a confortable zone to stagnate

16:38 if you have many libraries at your disposal then is seducing to create your own, except if you have the NIH syndromme

16:38 mengu: lawandand: that is the main reason of building clojure on top of jvm

16:39 seamless java integration, access to thousands of ready-made libraries

16:39 lawandand: I can understand that java integration is a good selling point, but many programmers love to do thing from scratch

16:40 lisp heart was begin with a list and conquer the universe (poetical license taken)

16:40 amalloy: am i doing something stupid here with compojure? https://www.refheap.com/e9cf75c476b3044efa9210a8d - if i include the handler (GET "/hello" [text] nil), or indeed any GET, then all requests to my server print this error message. if i just put in (constantly (response "ok")) it works fine, so it kinda has to be something wrong with how GET is working

16:41 and i could swear it worked yesterday. i'm thinking it looks some dependency version mismatch or something, but i haven't changed those

16:42 lawandand: I don't know about compojure, can't help, I find ruby sinatra easy for playing.

16:44 I learned a little clojure with Mark Wolkman article, I think it was a very good way of learning the basic of clojure

16:44 patchwork: amalloy: https://github.com/caribou/polaris (routes as data, not macros)

16:45 amalloy: i am not asking what other crazy framework to switch to, i am seeing if anyone knows why this simple example is broken even though i've written a dozen compojure servers just like it

16:45 lawandand: the code for 4clojure was somewhere around to play with

16:45 amalloy: lawandand: i know, i wrote it :P

16:45 mavbozo: amalloy, route path should be "/hello/:text" ?

16:46 lawandand: Some years ago I spent a lot of time playing with 4clojure, noughty boys

16:46 Jekferro: ciao

16:46 amalloy: mavbozo: no, the way it is now it's a query-param instead of a route-param

16:47 lawandand: it is supposed that compjure is so easy to use that you don't need a lot of documentation, but I prefer to h ave a lot of docs around, just in case something doesn't work

16:47 amalloy: but it doesn't matter, i can make it (GET "/foo" [] nil) and get the same behavior

16:47 ircxy: amalloy: with a nil handler I get 404

16:48 amalloy: yeah, i'd love to get a 404, because then stuff would be working

16:48 lawandand: amalloy: test the port is not broken

16:49 perhaps the server is using a different port and so yoiu don't get traffic

16:49 amalloy: what would a broken port even mean? curl causes my app to print stacktraces, the server is obviously on that port

16:50 sorry, i guess i am being kinda grumpy. you are trying to help, and i should appreciate it

16:50 lawandand: ok, so the problem is somewhere else, perhaps the stacktraces can tell something

16:51 amalloy: yes, i pasted the stacktrace awhile ago

16:51 https://www.refheap.com/e9cf75c476b3044efa9210a8d

16:52 scottj: amalloy: sorry to pile on random suggestions, but maybe you can write a minimal request map and pass that the router or handler (sorry I haven't used compojure in a long time)

16:52 TimMc: lein clean, rm -rf ~/.m2/repository, and say three Hail Marys. :-P

16:52 amalloy: i did try lein clean, and turning off aot

16:52 because i have run into stupid stuff like this from stale classfiles before

16:53 scottj: right now we don't see the request map that's causing that clout error

16:53 amalloy: scottj: the req map is https://www.refheap.com/877c5be44427cd2865916b384

16:53 which seemed pretty reasonable to me

16:55 lawandand: I can't help, don't know about compojure, the stacktraces mention someting about clojure.core/-cache-protocol-fn

17:08 TimMc: amalloy: When you figure this out you'd better tell us 'cause the suspense is killing me.

17:08 patchwork: I bet it is something dumb

17:09 amalloy: TimMc: i have bad news in that regard. it mysteriously started working and i can't figure out what i changed

17:09 TimMc: noooooo

17:09 Something *really* dumb, like being in the wrong directory then. :-P

17:09 amalloy: no, this is all in the same swank session

17:09 TimMc: oy

17:12 mavbozo: there'a github issue with the same error https://github.com/weavejester/compojure/issues/135

17:12 No implementation of method: :route-matches of protocol: #'clout.core/Route found for class: clojure.lang.PersistentArrayMap

17:14 amalloy: i wonder if it is related to aot after all

17:18 aha. TimMc: figured it out. it is another dang issue with clojure.tools.macro/macrolet. i guess that thing is more trouble than it's worth to keep trying to use

17:18 mavbozo: what does it do?

17:19 amalloy: my route was inside of a (macrolet ... (routes (GET ...))), and the macroexpander in macrolet breaks the expansion of GET (probably replacing a record with a plain map, even though really you shouldn't be embedding record literals in code IMO)

17:21 TimMc: oof

17:21 mavbozo: but sometimes it works, sometimes it breaks. why?

17:21 TimMc: Not dumb, but not satisfying.

17:21 I demand better bugs!

17:22 such as this one: http://calicat.tripod.com/gif/giant.jpg

17:22 amalloy: mavbozo: because i had gotten rid of the macrolet at some point, once i commented out the actual handler that was using it, and replaced it with the dummy handler that just returns nil

17:22 wink: TIL tripod is alive

17:27 xemdetia: it's getting all that sweet geocities traffic

17:27 mavbozo: 1 more bug squashed today

17:29 pmonks: (inc wink)

17:29 lazybot: ⇒ 3

17:29 pmonks: (inc rhymes)

17:29 lazybot: ⇒ 1

17:40 sveri: Why does (into (sorted-map) (partition 2 [:1 2 :3 4])) not work, but (into (sorted-map) [[:1 2] [:3 4]]) works?

17:41 amalloy: because [1 2] is a vector, and (1 2) is not a vector, and maps only want to conj vectors

17:41 but like, don't use into/partition to put stuff into a map. if you already have an interleaved vector, just (apply assoc (sorted-map) ...)

17:43 sveri: amalloy: thanks, that works :-)

17:43 amalloy: sveri: also, the keyword :1 is super duper suspicious

17:43 you probably just want 1 as your map key, not :1

17:43 sveri: amalloy: this was just an example to try things out in the repl

17:43 I never had a :1 in real code ;-)

17:52 calvinfroedge: I want to call an API until I hit a rate limit. My approach to this is mapping a function to an infinite range and then doseq until a condition exists. My problem with this is that there doesn't seem to be a way to break out of a doseq. Is there a better alternative?

17:53 I want to use a lazy sequence so that I only need to keep 1 item in memory at a time. My understanding of doing this recursively would be that the entire call stack would stay in memory (is that incorrect)?

17:56 amalloy: (doseq [x xs :while (keep-going x)] ...)

17:56 calvinfroedge: amalloy: Thanks!

17:59 thearthur: anyone know if you can tell leiningen to use some directory other than ~/.lein/profiles to get it's profiles (or another location for all of ~/.lein)?

18:00 amalloy: thearthur: ~/.lein is hardcoded in a number of places in lein source, it seems to me from a quick grep. so probably not

18:00 lemonodor: calvinfroedge: you could also use reduce for that, i think. use (reduced …) to break out, or just pass along information about the last attempt to the next attempt. e.g. you could do exponential backoff for a few tries, and break out after some limit is hit

18:01 amalloy: oh, no, i take it back

18:01 thearthur: you can set the environment var LEIN_HOME

18:01 and that's used instead of .lein

18:02 calvinfroedge: lemonodor: Definitely seems like doseq :while is much simpler, but thanks for another option = )

18:03 thearthur: amalloy: LEIN_HOME works :) yay

18:13 kaiyin: anyone care to have a look at this? http://stackoverflow.com/questions/29661828/classcastexception-when-filtering-a-set-by-another-set

18:16 amalloy: kaiyin: you mistyped the definition of character

18:16 should read :items, not :itmes

18:16 spieden: ya

18:16 sritchie: typo

18:17 mavbozo: kaiyin, first argument for filter must be predicate-function

18:17 amalloy: mavbozo: sets are functions, and the code is intending to pass a set there

18:17 but because of the typo i mentioned, it's a list instead

18:18 sritchie: ,(conj nil 0)

18:18 clojurebot: (0)

18:18 mavbozo: amalloy, ah, my mistake

18:18 kaiyin, sorry

18:19 kaiyin: got it, thanks!

18:19 mavbozo: no problems at all.

19:05 zanes: Did someone integrate Herbert schemas with core.match?

19:06 Am I imagining things?

19:10 (Not quite sure what such an integration would look like.)

19:23 irctc: hello, I need help with regex + permutation

19:24 can anyone tell me how would you implement such function: (magic-func "+---++---+" "KEY") -> ["+KEY++---+" "+---++KEY+"]

19:24 clojure.string/replace-first only gets me the first item

19:29 oddcully: ,(re-seq #"\+---\+" "+---++---+")

19:29 clojurebot: ("+---+" "+---+")

19:57 timvishe_: ,(clojure.string/replace "---" "KEY")

19:58 clojurebot: #error{:cause "Wrong number of args (2) passed to: string/replace", :via [{:type clojure.lang.ArityException, :message "Wrong number of args (2) passed to: string/replace", :at [clojure.lang.AFn throwArity "AFn.java" 429]}], :trace [[clojure.lang.AFn throwArity "AFn.java" 429] [clojure.lang.AFn invoke "AFn.java" 36] [sandbox$eval25 invoke "NO_SOURCE_FILE" 0] [clojure.lang.Compiler eval "Compiler.j...

19:58 timvishe_: ,(clojure.string/replace "+---++---+" "---" "KEY")

19:58 clojurebot: "+KEY++KEY+"

19:58 timvishe_: irctc: ↑

19:58 oh. Bai Bai! ^_^ :)

19:58 hmm... redundant emoji...

21:34 stephens_: hi i was wondering if i could get some help

21:34 i want to hit an API from within my clojure code

21:35 im very new to clojure, and have come from python, and i was wondering if there was anything like the requests library in python for clojure?

21:45 mgaare_: stephens_: look at http-kit

21:49 stephens_: great, thanks mgaare

22:12 justin_smith: cfleming: did you see this SO question? it might be something you could help with http://stackoverflow.com/questions/29661440/intellij-double-click-to-not-treat-hyphen-as-word-separator

22:12 TEttinger: uh oh, does intelliJ use \w for word separation?

22:13 justin_smith: One would think you could override the word rules

22:13 cfleming: justin_smith: Thanks. I don't know the answer but I'll see if I can find it

22:13 TEttinger: ,(re-find #"\w+" "ÁÁÁÁaaa")

22:13 justin_smith: who know, you may need to implement the answer :)

22:14 clojurebot: "aaa"

22:14 justin_smith: *knows

22:16 cfleming: justin_smith: Yep, looks like I will. There's actually already an issue open for this I think

22:17 justin_smith: also, maybe see you at clojure/west?

22:17 cfleming: I'm counting on it!

22:17 I'll be too jetlagged to be going to the concert you were suggesting though.

22:18 justin_smith: fair enough

22:21 cfleming: I should probably watch some set of SO tags I guess, I never check it much

22:21 justin_smith: yeah, it's an era when people are more likely to mention their software problems on twitter or stack overflow than they are to bring them up with the developers of the app

22:22 cfleming: Kids these days

22:23 I've got to say, I hate twitter for most forms of support. I mean, it's generally pretty immediate, but for anything other than really simple queries it's a PITA

22:23 justin_smith: yeah

22:25 amalloy: @cfleming tweet longer than 140 chars :((((

22:25 cfleming: amalloy: 1. I end up writing

22:25 amalloy: 2. lots of answers like

22:26 amalloy: 3. this. It drives me

22:26 amalloy: 4. nuts.

23:05 xphillyx: Is earmuff notation accepted or generally frowned upon in Clojure?

23:05 justin_smith: xphillyx: it's expected for dynamic vars

23:06 ,*clojure-version*

23:06 clojurebot: {:major 1, :minor 7, :incremental 0, :qualifier "master", :interim true}

23:06 justin_smith: ,*out*

23:06 clojurebot: #object[java.io.StringWriter 0x3fcdb5a1 ""]

23:06 justin_smith: funny enough, *clojure-version* isn't even dynamic (I mean why would it be...)

23:07 xphillyx: Awesome thanks.

23:07 justin_smith: ,(apropos "^\*.*\*$")

23:07 clojurebot: #<RuntimeException java.lang.RuntimeException: Unsupported escape character: \*>

23:07 justin_smith: ergh

23:07 ,(apropos #"^\*.*\*$")

23:07 clojurebot: (clojure.core/*agent* clojure.core/*allow-unresolved-vars* clojure.core/*assert* clojure.core/*clojure-version* clojure.core/*command-line-args* ...)

23:07 justin_smith: ^ fun clojure trick

23:07 xphillyx: oh thats nifty.

23:08 Yay regex.

23:08 justin_smith: now I'm trying to remember if there's something like apropos that also looks at doc strings

23:08 Bruce_Wayne: has anyone used [cemerick.url :refer [url-encode

23:08 url-decode]

23:08 justin_smith: ,(apropos "doc")

23:08 clojurebot: (clojure.core/my-doc clojure.repl/doc clojure.repl/find-doc)

23:09 justin_smith: ooooo

23:09 ,(find-doc "number")

23:09 clojurebot: -------------------------\nclojure.core/*print-length*\n *print-length* controls how many items of each collection the\n printer will print. If it is bound to logical false, there is no\n limit. Otherwise, it must be bound to an integer indicating the maximum\n number of items of each collection to print. If a collection contains\n more items, the printer will print items up to the limit foll...

23:09 justin_smith: that's hella useful

23:09 Bruce_Wayne: anyone able to help with url encoding?

23:09 justin_smith: Bruce_Wayne: you can go ahead and ask your specific question

23:10 Bruce_Wayne: I am trying to encode params in a url useable way

23:10 aka not including special symbols

23:10 thought I could use the [cemerick.url :refer [url-encode url-decode] library

23:11 but when i pass it a string it seems to not work

23:11 justin_smith: Bruce_Wayne: what does it do? I'm looking at the source and it should work

23:12 Bruce_Wayne: not sure, I’m working in a complex system and I can’t see it’s output

23:12 xphillyx: Bruce_Wayne: Have you tried the built in Java encoder? http://docs.oracle.com/javase/7/docs/api/java/net/URLEncoder.html

23:12 justin_smith: xphillyx: that's what cemerick's lib is using

23:12 it's a very thin wrapper

23:12 https://github.com/cemerick/url/blob/master/src/cemerick/url.cljx#L9

23:12 Bruce_Wayne: interesting

23:12 xphillyx: Ah, I didn't peek into the source.

23:13 Bruce_Wayne: I’m just not sure why it won’t pass the params

23:13 justin_smith: the function is just a single interop call (well two, one for clj, one for cljs)

23:13 Bruce_Wayne: looks like it’s encoding right

23:13 just a problem with reading the url on the other side

23:13 justin_smith: Bruce_Wayne: url-encode is for taking a single param, and making a form that is safe to use inside a query parameter

23:14 Bruce_Wayne: will work a bit an check in with futhure questions

23:14 just wanted to make sure I wasn’ crazy

23:14 justin_smith: url-encode is not for building your entire query-string with - you can piece that together with & and = and your various keys

23:15 Bruce_Wayne: you might want to use map->query if you want it to build the whole query string though

23:15 Bruce_Wayne: thank you!

23:17 I am also using the reagent framework

23:17 but when the url is formated like this:

23:17 http://localhost:8020/#/users/create-vendor-rep/003i000001OKpSrAAL/Dave_0Bodet/Sysco_0TBD/enter_password

23:17 it works

23:17 but like this:

23:18 http://localhost:8020/#/users/create-vendor-rep/003i000001N8JsaAAF/Dennis%20Dougherty/US%20Foods/enter_password

23:18 it doesn’t work

23:18 ideas?

23:18 the latter url gives a not found error

23:19 justin_smith: Bruce_Wayne: that's not a query string, that is a really weird anchor

23:19 Bruce_Wayne: i am passing the params attached to the end of the url

23:20 and destructuring the url based on the “/"

23:20 I’m not building a query string

23:20 justin_smith: why not use real query syntax?

23:21 ,(java.net.URLEncoder/encode "/users/create-vendor-rep/003i000001N8JsaAAF/Dennis%20Dougherty/US%20Foods/enter_password")

23:21 clojurebot: "%2Fusers%2Fcreate-vendor-rep%2F003i000001N8JsaAAF%2FDennis%2520Dougherty%2FUS%2520Foods%2Fenter_password"

23:22 Bruce_Wayne: ?

23:22 what i sent is already the encoded url….

23:22 justin_smith: that's what a proper encoding of that monstrosity looks like, but I still thing using real query parameters is a better idea

23:22 Bruce_Wayne: that's not encoded

23:22 Bruce_Wayne: the params are encoded

23:22 each individual param

23:22 the struggle isn’t with the url

23:22 justin_smith: by what encoding? it's not URLEncoding

23:22 Bruce_Wayne: it’s with the params

23:22 yes it is haha

23:22 given each param to the url encoder

23:23 (java.net.URLEncoder/encode “Dennis Dougherty”)

23:23 justin_smith: OK, but the fact that you are putting them together with / is what breaks it

23:23 Bruce_Wayne: why does that break it

23:23 and why does the first url work then?

23:23 justin_smith: because URLs have rules

23:23 Bruce_Wayne: so why does the first one work and the second one doesn’t?

23:23 xphillyx: "this isnt nam smokey, there are rules!"

23:24 justin_smith: why invent your own idiosyncratic way of specifying parameters when there is already a system defined for specifying parameters with a request?

23:24 Bruce_Wayne: because they are both broken and one accidentally worked

23:24 Bruce_Wayne: justin_smith: then all of them accidently work that way

23:25 xphillyx: Do you have any working URLs with spaces in the names?

23:25 Bruce_Wayne: yes

23:25 justin_smith: Bruce_Wayne: most of the time if you walk into a random street without looking both ways you won't die. Just because something didn't fail once doesn't mean you were doing it properly.

23:26 Bruce_Wayne: basically the problem was special characters in the params

23:26 which are being passed as extensions to the url

23:26 whether right or wrong

23:26 cars on the street or no cars on the street

23:26 justin_smith: Bruce_Wayne: why not use real query parameters and not your weird invented version?

23:27 Bruce_Wayne: because the way I did it fits in nicely with reagent framework

23:27 when i use these methods:

23:27 https://gist.github.com/jtackett/962cddfb89e0b4fe9327

23:28 to take the special characters out of the params that I am passing

23:28 justin_smith: OK, you know what my opinion is. Good luck.

23:29 xphillyx: Is Joy of Clojure considered a good resource for learning idiomatic Clojure?

23:29 justin_smith: xphillyx: definitely, if you can follow it. It isn't a slow moving text.

23:29 Bruce_Wayne: oh that’s interesting, i think we have reached the limit to justin smith’s knowledge

23:30 if someone would be so kind as to actually explain why one url works and the other doesn’t that would be awesome

23:30 justin_smith: Bruce_Wayne: if preferring real query parameters, as defined in the http spec, to bizarre nonstandard hacks makes me ignorant, I'm proud to be stupid.

23:31 Bruce_Wayne: maybe they could actually cite some of the rules the second url breaks rather than making car references

23:31 justin_smith: Bruce_Wayne: for one, it isn't a query parameter

23:31 like I said, it's an http anchor

23:31 Bruce_Wayne: could you just answer my specific question which you asked me to ask

23:32 justin_smith: no, I'll just accept being stupid instead

23:32 Bruce_Wayne: so you don’t know the answer?

23:34 also just because I am doing something different than the http spec protocol doesn’t make it wrong

23:34 Job’s built a personal computer that was completely against the protocol…didn’t make him wrong either

23:35 xphillyx: … what?

23:35 justin_smith: you are using the string as part of a http request string - as an achor tag in the URI. This means that you need to follow the rules for URIs. If you use query parameters properly, this problem can easily be avoided.

23:35 and I'm being grumpy and unhelpful, which means I need a break. See you all later, sorry.

23:46 Bruce_Wayne: OK, everything following # in a URL is called a "fragment identifier", they are meant to look up named anchors within a page. This SO answer describes the valid characters in a fragment identifier: http://stackoverflow.com/a/2849800/2258453

23:47 Bruce_Wayne: awesome

23:47 thank you for the straight answer

23:48 justin_smith: in particular, a "?" is going to introduce the end of a fragment, and everything after it will be treated as query params

23:49 http://tools.ietf.org/html/rfc3986#section-3.5 "The characters slash ("/") and question mark ("?") are allowed to represent data within the fragment identifier. Beware that some older, erroneous implementations may not handle this data correctly when it is used as the base URI for relative references (Section 5.1)."

23:50 Bruce_Wayne: so maybe a % sign isn’t allowed either?

23:51 justin_smith: it's allowed as part of an escape string

23:51 %dd where d are digits

23:51 *hex

23:51 Guest76337: (+ 1 1)

23:51 clojurebot: 2

23:52 TEttinger: huh, clojurebot normally needs , before it can eval

23:52 (+ 1 2 3)

23:52 clojurebot: *suffusion of yellow*

23:52 justin_smith: TEttinger: it's a special case :)

23:53 (#'+ Double/NaN Double/NaN)

23:53 * arrdem implodes

23:54 TEttinger: ,(== Double/NaN Double/NaN)

23:54 clojurebot: false

23:55 Guest76337: batman, are you building a REST api?

23:55 TEttinger: ,(let [nana Double/NaN] (== nana nana))

23:55 clojurebot: false

23:55 TEttinger: ,(let [nana Double/NaN] (= nana nana))

23:55 clojurebot: false

23:55 arrdem: nans are never equal yo

23:55 TEttinger: ,(let [nana (identity Double/NaN)] (= nana nana))

23:55 clojurebot: true

23:55 arrdem: ##(* -1 Double/NaN)

23:55 lazybot: ⇒ NaN

23:56 TEttinger: arrdem, you sure about that?

23:56 ,(let [nana (identity Double/NaN)] [ (= nana nana) (== nana nana)])

23:56 clojurebot: [true false]

23:57 arrdem: that's awful but I feel like we've been over this before

23:57 TEttinger: object identity will make two NaNs returned by the same call equal, even if they are numerically non-equal

23:57 yep

23:57 I hadn't checked for == before

23:58 NaN is like the worst corner case possible wherever it shows up

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