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00:21 raphie: I'm looking to split up a list into multiple sub-lists -- anyone got any tips?
00:21 mithos28: raphie: partition
00:21 raphie: basically, I'd like it to work like this with a test function:
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00:22 raphie: (split even? (list 1 3 6 3 9 10)) --> (list (list 1 3) (list 3 9))
00:22 raphie: IIRC partition won't do that
00:23 mithos28: so split-at will help
00:24 raphie: mithos28: but that takes an index, right? how would I get that to work?
00:24 mithos28: (length (memf proc list))
00:24 raphie: and it returns just two lists, whereas my function would return an arbitrary number
00:24 mithos28: or just write the function yourself
00:25 mithos28: thats why I said 'will help' not does what you want
00:25 raphie: ahh, okay
00:26 mithos28: there is also group-by
00:26 mithos28: nvm, not what you want
00:27 raphie: huh, I think it'd be a good experience to write it myself. so I'm a tad new to racket--all of the recursive functions so far have just iterated over a single list. how would I "switch modes" from inserting into a sub-list to creating a new sublist?
00:27 raphie: as in, if my proc is even? and the list is (list 1 2 3)
00:28 raphie: the function would add 1 to a sublist, then see that 2's even and instead of adding 3 to 1's sublist, create a new sublist for it
00:28 mithos28: what does it do when the list is (list) vs (list 2)
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00:29 mithos28: try writing out some cases and see if you can understand what the step is
00:30 raphie: okay! I guess (list) should produce (list) and (list 2) should probably produce (list (list) (list))
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00:44 mithos28: Just broke TR soundness. Again.
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03:30 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/CtREFw
03:30 RacketCommitBot: racket/master 0e8b5f8 Eli Barzilay: New Racket version 5.3.3.1.
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08:27 anonymou3: "and continuation, which is the evaluation context surrounding an expression."
08:27 anonymou3: I think it's better to replace "an expression" with "the redex"
08:28 anonymou3: and it is better to replace "evaluation context". I think it is still easy to confuse it with just "the text surrounding redex".
08:29 anonymou3: here: http://docs.racket-lang.org/reference/eval-model.html
08:30 anonymou3: ah... deep night in US
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09:01 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/DrloUg
09:01 RacketCommitBot: racket/master cd202f5 Jay McCarthy: Supporting headers and stateless in web-server/test
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11:22 mye: anonymou3: I had the exact same thought when I read this two days ago
11:23 mye: but was too lazy to send an email, if you do I'm sure someone will comment
11:24 mye: Or better, just do a pull request on github
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11:31 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/78jplg
11:31 RacketCommitBot: racket/master c2b8671 Eric Dobson: Fix :print-type. Closes PR13503.
11:31 RacketCommitBot: racket/master 19241c0 Eric Dobson: Make overlap more precise.
11:31 RacketCommitBot: racket/master 40a9794 Eric Dobson: Add missing pure functions.
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11:32 mithos28: stamourv: thanks
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11:33 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/hXlXsw
11:33 RacketCommitBot: racket/master 469a697 J. Ian Johnson: For/product treated like for/sum for special annotation. Also allowed no annotation to be consistent with the docs.
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11:48 mye: Is it only me or is code that much harder to read if functions aren't equipped with a purpose statement?
11:49 mithos28: depends on the function, but yes if it is doing anything complicated
11:49 mithos28: https://github.com/plt/racket/commit/19241c09792dc23ff0c633ab6406d5b9189a2e83#L1R10
11:49 rudybot: http://tinyurl.com/avu7fht
11:50 mithos28: Like that function I added yesterday. It doesn't have a purpose statement, but is still readable
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11:53 didi: mye: I think it's very nice how CL and elisp handle it with a string right after the lambda list.
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11:54 mye: good example of how to communicate intent through naming. I believe that when coding one thinks the function name is so obviously descriptive that a reader *for sure* can figure it out as well.
11:54 mye: But for most function names this is probably not true
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12:08 asumu: mye: purpose statements are great, yeah. Now to get students to understand this. :p
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12:10 anonymou3: mye: should I send it to dev@racket-lang.org or users@racket-lang.org, and, maybe, I can use http://bugs.racket.com ?
12:11 mye: anonymou3: Hard to say which is best. I'd ask on users
12:11 anonymou3: mye: thx
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12:21 mye: asumu: I want javascript devs to understand this  :\
12:21 mye: I think I'll hibernate in racket land again until the module system for js is ready
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12:31 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/LVRFcA
12:31 RacketCommitBot: racket/master 4797173 Sam Tobin-Hochstadt: Properly unquote in error message....
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13:43 anonymou3: Do I get it correctly: I MUST read The Racket Reference to get a good racket developer(for free)?
13:43 anonymou3: to be a good*
13:43 anonymou3: become
13:43 didi: anonymou3: Hehe.
13:43 didi: I was wondering...
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14:16 asumu: anonymou3: I would say the Guide is better.
14:16 asumu: Though you will probably need to consult the Reference every so often for details.
14:17 didi consults the documentation _all_ the time
14:18 asumu has a 'r' search shortcut set in Opera
14:20 didi has a `raco-docs' command in StumpWM
14:20 anonymou3: interesting, do programmers that programmed on a language more than 10000 hours do the same...
14:21 anonymou3: s/that/
14:21 anonymou3: will asumu and didi do it after 10 years...
14:22 anonymou3: ah, return that...
14:22 anonymou3: ...?
14:22 asumu: I'm pretty sure no matter how many hours I program in Racket, I will look things up.
14:23 asumu: My cache isn't that large and my web browser is my swap.
14:23 didi: anonymou3: There is always something to be discovered or relearned.
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14:23 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/o1g1KA
14:23 RacketCommitBot: racket/master 670efed Neil Toronto: Increased timeout for matrix tests
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14:42 anonymou3: thx
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15:16 sirdancealot: should i get the fishing line spools printed with PLA or ABS? o_)
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16:07 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/rA-_aA
16:07 RacketCommitBot: racket/master c19b8a4 Danny Yoo: Correct the contract in Example 3 to use and/c....
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16:11 dyoo: Stay safe for folks on the US new england area!  Hope things are not too bad there.
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16:15 asumu: dyoo: it's pretty snowy and windy
16:16 asumu isn't too concerned unless the power goes out
16:16 dyoo: It's just starting to lightly snow here in Salt Lake again, but probably nothing like what East coast folks there are seeing.  Just looked out the window and thought of friends out there.
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16:43 anonymou3: bremner, please, don't kill me.
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16:43 anonymou3: "a set of tools—for using a family of programming languages."
16:43 anonymou3: http://docs.racket-lang.org/guide/intro.html
16:43 anonymou3: maybe better say "the"?
16:43 anonymou3: I am not sure
16:48 stchang: in the drracket repl, when the result is a syntax object, what is the thing I get back, where I can click the arrow to expand to get more information?
16:48 stchang: is that a snip?
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16:48 stchang: im trying to figure out how to get the expanding box
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17:05 dyoo: stchang: that's a snip.  The DrRacket printer sees that the value is a syntax object, and re-prints it as a graphical snip.
17:07 asumu: stchang: might be from mrlib/syntax-browser.rkt
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17:12 anonymou3 isn't sure why people ignore him. Even those who approved him to report about grammar mistakes. If the people changed their opinion - he is going to stop.
17:12 anonymou3: even the people*
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17:14 dyoo: anonymou3: sorry, didn't see your message
17:15 dyoo: I'm right in the middle of attacking PR 13350, so I sorta ignore IRC for a bit… :(
17:16 anonymou3: dyoo: 00:43 < anonymou3> "a set of tools—for using a family of programming languages."
17:16 anonymou3: 00:43 < anonymou3> http://docs.racket-lang.org/guide/intro.html
17:16 anonymou3: 00:43 < anonymou3> maybe better say "the"?
17:16 anonymou3: 00:43 < anonymou3> I am not sure
17:17 anonymou3: (I was sending very similar grammar report, but English is not my native and I know only essential grammar)
17:17 dyoo: anonymou3: I think "the" is too definitive.  If you phrase the third line item as: "Racket is a set of tools for using the family of programming languages", it almost sounds like there's a claim that Racket includes all programming languages, which isn't right.
17:18 anonymou3: the previous sentence is "[Racket is] a family of programming languages—variants of Racket, and more; or"
17:18 anonymou3: [Racket can mean]*
17:21 anonymou3: so, maybe it should be "a set of tools—for using the family of programming languages."
17:21 anonymou3 is sorry for bad wording at first
17:23 dyoo: But the term: "the family" is too big.  I don't think Racket captures the whole universe of programming languages.  It's a good set to tools to attack a certain class of programming languages, but it's not "The family".  That's why "a" is necessary: it's a smaller claim than "the".
17:25 dyoo: Also, note that IRC communication is very asynchronous.  It'd be nice if it were like face-to-face communication or instant messaging, but it isn't.  So if you don't get instant replies to your questions, please do not take offense: it's almost certainly not because you're being actively ignored.  Rather, most of us keep IRC open, but only look at it periodically: we use a "polling" strategy, rather than let IRC dictate the flow of our actions.
17:25 dyoo: Same thing with email.
17:27 Nisstyre-laptop: dyoo: sometimes I deliberately close IRC or else it's too tempting to get distracted
17:27 Nisstyre-laptop: I should probably do that right now
17:28 stchang: dyoo, asumu: thanks ill check it out
17:28 anonymou3: dyoo: Thank you :)
17:28 dyoo: anonymou3: no problem!
17:28 dyoo: stchang: uh, what thing did I just help with?  :)
17:29 dyoo: oh, the snip stuff!  Right, no problem.
17:29 (quit) vkz: Quit: vkz
17:30 bremner: dyoo: btw, I gave a simple BNF assignment using ragg: http://tesseract.cs.unb.ca/pl/homework-4.html
17:31 bremner: and the submodule stuff you whipped up/
17:31 dyoo: bremner: :)  Very cool!  I hope it works out well.
17:31 bremner: dyoo: it seems to have gone fine.
17:31 dyoo: ok, gotta figure out why in the world the following uses 100% CPU: (require readline/pread) (read-char readline-input)
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17:45 anonymou3: Maybe racket-lang.org should use  … instead of ...?(I don't know how important it is either)
17:45 anonymou3: it uses "..." in search
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17:46 anonymou3: s/either<
17:48 anonymou3: /*
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17:51 bremner: depends on people's unicode font support, I suppose.
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18:25 dyoo: Whew.  Ok, figured the heart of the silly problem.  The current readline FFI bindings are evil: they are busy polling all the way.  Must fix it so it's callback-driven.
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20:17 dyoo: question: anyone have experience dealing with async C apis for FFI?  I'm having some problems fixing readline.
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