00:00 eli: asumu: Oh, actually dyoo said it was a joke: http://pre.racket-lang.org/docs/html/reference/strings.html#%28def._%28%28quote._~23~25kernel%29._string-copy%29%29
00:00 rudybot: http://tinyurl.com/a26tdxf
00:00 eli: (And that looks like a very obscure sense of humor to me...)
00:00 asumu: Oh that. It's a joke from a popular TV show.
00:01 asumu: Or rather, a reference to one.
00:01 eli: Oh, http://en.wikipedia.org/wiki/Rei_Ayanami?
00:02 asumu: Yes, that one.
00:02 eli kept googling for "youi rei"
00:02 eli: Did anyone see my redbull?
00:03 mithos28: now that 5.3.2 is out, what is the next big thing for racket? Moving things out of core?
00:04 eli: Need to be out of beta first, and then it will happen very slowly.
00:04 eli: Very.
00:05 eli: Extremely very.
00:05 mithos28: ok so anything else coming down the pipeline?
00:08 eli: The usual bits...
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00:49 asumu: Hmm, I wonder if HN skews more nightowl than reddit. I see more comment activity there on the Racket thread than on reddit.
00:49 mithos28: asumu: It might also skew more west coast
00:49 mithos28: its still early here
00:49 asumu: Ah, good point.
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00:50 asumu somehow keeps forgetting this even though he's from that coast
00:53 asumu: Oh, that paper on the Racket VM model got published in HOSC, it looks like.
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01:42 lewis1711: rudybot: (require math)
01:42 rudybot: lewis1711: your sandbox is ready
01:42 rudybot: lewis1711: error: #<undefined>:1:9: math: standard-module-name-resolver: collection not found: "math" in any of: (#<path:/mnt/racket-5.2.900.1/collects>) in: math
01:42 mithos28: rudybot: how old are you?
01:42 rudybot: mithos28: But chibi will have to use the workaround for a _long_ time, to accomodate old systems.
01:43 lewis1711: 5.2.9
01:44 lewis1711: I was going to write a racket entry on rosetta code for some linalg stuff with the new math lib
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02:19 mithos28: If I have a list of seqences is there an easy way to get a sequence of lists? or better yet a sequence of (f x1 y1 …) (f x2 y2  …) ...
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09:39 htop_: hello, how can I (re)load a racket file into an interactive session (in clisp, there is something linke (load-file "filename"))
09:41 asvil: htop_: racket "requires" reloading image
09:42 soegaard: htop_:  I might misread your question, but does (require "file.rkt") do what you want?
09:43 htop_: asvil, thx. I think (enter! file) is also possible! I've just read about that.
09:44 htop_: The thing i want to do ist: do some (define ...) inside a rkt-file and try it out in the interactive racket session. It is similar to drracket, but I want to use vim as my editor.
09:45 asvil: htop_: there is geiser in emacs, which tries to be swank/slime.
09:45 asvil: sorry, do not know about vim
09:50 asumu: htop_: if you use XREPL then there is a command ,rr (or ,require-reloadable) that can be used to require a module multiple times from the REPL.
09:51 asumu: So you can use this to incrementally develop.
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10:11 asumu: This is a neat idea: http://lists.gnu.org/archive/html/guile-user/2013-01/msg00116.html
10:12 asumu: Also, I now want to make #lang achievements http://www.pltgames.com/competition/2013/2
10:13 asumu: "Congrats, you did 100 arithmetic expressions. You have no unlocked function definitions!"
10:13 asumu: s/no/now/
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10:41 tim-brown: i've got a question on the list, which is being unanswered... is there any way to put a chunk with a (module+ test ...) into a scribble/lp module?
10:41 tim-brown: s.t. that is tested by raco test?
10:44 asumu: tim-brown: I looked into that a bit and I don't think it works right now.
10:45 asumu: It seems the error you get is because the test submodule inherits the (#%module-begin ...) of the outer module, so it's from scribble/lp.
10:45 asumu: Which does some special handling that breaks the submodule.
10:45 tim-brown: what? and there should only be a a single #%module-begin?
10:46 asumu: Well, it's just that scribble/lp's #%module-begin wasn't written to do the correct thing to submodules.
10:46 asumu: (I'm not sure what the correct thing is)
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10:47 asumu: Also, I think it doesn't handle non-module+/* submodules correctly either (as a separate problem).
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10:47 asumu: Likely worth submitting as a bug report if you haven't already.
10:50 soegaard: Is the docs on docs.racket-lang.org uptodate ?
10:51 soegaard: Nope.
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11:03 qpls: I'm trying to run for-each on a list of lists but it complains that the second argument is not a <proper list>
11:03 qpls: the list is not recursive (it doesn
11:04 qpls: 't refer to iteself)
11:04 qpls: it simply contains elements which themselves are lists
11:04 qpls: does this not fall under the definition of a "proper" list
11:04 qpls: ?
11:05 (quit) asvil: Ping timeout: 256 seconds
11:10 qpls: nevermind, I was using a tail recursive function which returned void instead of an empty list
11:10 qpls: so the type ended up being list*
11:16 bremner: zounds. geiser just displayed a picture in my emacs
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11:21 soegaard: qpls: Do your list end in a '() ? Normally errors with " not a proper list" is due to (cons something <not-a-list>)
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11:33 mye: Can you recommend me a small to medium sized piece of typed/racket code I could read/refer to as an introduction? Possibly with comments explaining a bit? Something where most of the type machinery is used that can look at when coding?
11:34 mithos28: mye: Does the typed racket guide not have what you want?
11:34 mithos28: http://docs.racket-lang.org/ts-guide/index.html
11:36 mye: mithos28: It explains what exists, but it does contain only small code snippets
11:37 mithos28: You could look at some of the math files
11:37 mye: I thought if there is some simple but useful program with types it would be useful to just read through it to get a better feel
11:38 mye: mithos28: I feared sm1 would say that ;-)
11:38 mye: I'll have look then...
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11:41 mye: I found the canonical factorial, heh!
11:44 soegaard: mye:  https://github.com/plt/racket/tree/master/collects/math/private/number-theory
11:44 rudybot: http://tinyurl.com/cfzgabb
11:44 soegaard: contains simple Typed Racket
11:49 soegaard: The matrix/array stuff is more complicated.
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11:59 asumu: Some of the benchmark ports to TR could be helpful to look at: https://github.com/plt/racket/tree/master/collects/tests/racket/benchmarks/common/typed
11:59 rudybot: http://tinyurl.com/bkw36bo
11:59 asumu: (the rktl files)
12:00 tim-brown: night all
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13:14 htop_: another question about the interactive racket interpreter: is there history repeating possible (arrow key, up)
13:18 jonrafkind: on the command line? there is if you use readline
13:18 jonrafkind: (require readline)
13:19 jonrafkind: actually (require xrepl) is better
13:21 htop_: ah, great.
13:21 jonrafkind: you can put that in your ~/.racketrc so its always loaded
13:22 htop_: I will do that. I followed the htdp book and it doesnt say anything about customizing the environment.
13:23 jonrafkind: htdp is sort of divorced from racket proper
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13:36 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/9fy0uw
13:36 RacketCommitBot: racket/master c0c2eda Matthew Flatt: Scribble: add 'grouper and 'hidden-number part style properties...
13:36 RacketCommitBot: racket/master 09d4aa3 Matthew Flatt: Scribble: add `scribble/book' and `scribble/report' languages...
13:36 RacketCommitBot: racket/master c1bd671 Matthew Flatt: fix prototype when the C compiler has no "no inline" annotation
13:36 (part) RacketCommitBot
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14:11 danl-ndi: how can I get racket to show more context when and exception occurs?
14:11 jonrafkind: run your program with errortrace
14:12 jonrafkind: racket -l errortrace -t foo.rkt
14:12 jonrafkind: i may have mixed up the order of -l and -t
14:14 danl-ndi: ah, that did the trick. thanks!
14:19 asumu: htop_: there's a section in the Racket guide (at the end) about customizing your dev environment.
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14:24 greghendershott: Before ~v5.3, `,en foo.rkt` would re-evaluate the file, provided the timestamp changed. So e.g. a top-level expression like (displayln "hi") would display "hi".
14:24 greghendershott: Then ~5.3.1, `,en` stopped doing that for me. But (enter! "foo.rkt") still would.
14:24 greghendershott: And now in 5.3.2, suddenly enter! no longer does that anymore, either. At least not reliably.
14:25 greghendershott: o_O
14:25 greghendershott: Unless I'm crazy this changed sometime between HEAD a couple weeks ago, and HEAD today.
14:26 jonrafkind: elves
14:26 greghendershott: Oh I thought it was dwarves. I must have been thinking of Clojure.
14:26 jonrafkind: clojure is orcs. scala is dwarves
14:26 greghendershott: Ah right.
14:26 greghendershott: I am Tolkien fail.
14:27 asumu: greghendershott: Hmm, how about ,rr?
14:28 asumu: And yeah, that's odd.
14:29 greghendershott: Yeah that caught my eye in the chat transcript above, weird timing.
14:29 greghendershott: *experiments …. *
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14:40 greghendershott: asumu: ,rr is working for simplest-case file (#lang racket, newline, "hi") but not for a "real-world" file.
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14:40 greghendershott: In fact sometimes giving me error: "define-values: assignment disallowed; cannot re-define a constant. constant: lifted.0.2"
14:41 greghendershott: I'll try to whittle it down.
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14:43 asumu: Oh that's annoying. Hmm. I've seen that error before. Don't know the cause though.
14:44 greghendershott: I was in a module server.rkt, which did a (require "../server.rkt"). Same basename for the file. Changing that made the error go away.
14:44 greghendershott: Not sure if problem with same basename, or, that change flushed something else.
14:45 greghendershott: ^ File 1 was project/server.rkt and file 2 was project/example/server.rkt
14:50 greghendershott: It wasn't the basenames being identical. Changing one name only made it go away, temporarily.
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14:50 greghendershott: OK, well, I can tweak my workflow again to adapt.
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14:59 fasta: How do I just install a list of libraries?
15:00 fasta: I want to separate program execution from program installation.
15:02 dyoo: fasta: a little more context may be necessary.  What are examples of libraries you're considering?
15:02 fasta: dyoo: planet
15:02 dyoo: ok.  For PLaneT, you can get it to install without actually doing module require by… give me a sec...
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15:03 dyoo: programmatically, you should be able to do it with download/install-pkg: http://docs.racket-lang.org/planet/Utility_Libraries.html#%28def._%28%28lib._planet%2Futil..rkt%29._download%2Finstall-pkg%29%29
15:03 rudybot: http://tinyurl.com/ayyqung
15:05 dyoo: fasta: If you're planning to use planet2, there's a programmatic interface here: http://docs.racket-lang.org/planet2/Managing_Packages.html#%28part._.Programmatic%29
15:06 rudybot: http://tinyurl.com/absu8os
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15:10 fasta: dyoo: why do I have to specify the owner?
15:10 dyoo: I believe it acts as a namespacing mechanism
15:10 fasta: dyoo: and version numbers?
15:10 dyoo: example: there are several instances of an "sicp" package, written all by different authors
15:11 dyoo: as for version numbers: I think there's a default that lets it pull the latest.  Let me check...
15:11 fasta: dyoo: The GUI feels much more smooth now.
15:12 dyoo: not my fault.  :)
15:12 dyoo: thank the core racket developers for that one.
15:12 fasta: It's not like writing a GUI is hard, but all the previous versions (except the last one) were really terrible.
15:12 fasta: It's probably just that it doesn't count as research.
15:13 dyoo: I know Robby's been putting a lot of effort on improving responsiveness.  See the dev mailing list and you'll see a bit of discussion on this subject.
15:13 fasta: I spoke too soon.
15:14 fasta: It seems to be deadlocked.
15:14 dyoo: fasta: ugh.  Please submit bug report if you can figure out how to trigger it.
15:15 dyoo: Is it deadlocking on a particular program?
15:15 fasta: dyoo: yeah... I don't think that's going to happen, since it was 'hover over some symbols in some order'.
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15:17 fasta: I don't think it's good advertising of the language and the contracts if it crashed within 10 minutes.
15:17 fasta: It's not like I even tried to crash it.
15:18 dyoo: fasta: perhaps we can trace this down.  Is online check-syntax enabled for you?
15:18 fasta: dyoo: probably
15:18 fasta: dyoo: when I hovered over symbols I saw arrows.
15:19 fasta: dyoo: I can still attach to it via gdb.
15:20 fasta: dyoo:  1  0x0000000000573e4d in default_sleep ()  #2  0x0000000000602652 in check_sleep () #3  0x000000000060d7ac in scheme_thread_block () #4  0x000000000060dd46 in scheme_block_until () #5  0x000000000060edb4 in do_sync ()#6  0x000000000045adf1 in _scheme_apply_from_native () #7  0x00007f2a60614231 in ?? () #8  0x0000000000000000 in ?? ()
15:20 fasta: dyoo: like I expected: deadlock.
15:21 dyoo: Ok.  Can you send a copy of this to the Racket mailing list?  I'm definitely not the right person to help debug deadlocks, but I'm pretty sure that stack trace can help track the problem.
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15:22 fasta: dyoo: I am not a member.
15:22 fasta: IMHO, if people are interested, they will read the IRC logs.
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15:22 dyoo: no, don't depend on that.  IRC is transient.
15:22 fasta: Even grepping for BUG bug issue problem will show them this.
15:22 dyoo: ummmm… can you submit a bug a bugs.racket-lang.org?
15:23 dyoo: Let's get this information a place where it reaches the core developers, the ones who have a chance to fix this.  I don't think Matthew or Robby use IRC.
15:24 fasta: I think if they want to weed out the bugs, that they should just test it better.
15:24 fasta: Using something for 10 minutes should not result in a bug like this.
15:25 fasta: Any automated testing system will reproduce this in a day.
15:25 fasta: I have no doubt about that.
15:25 fasta: The problem is the software development process.
15:25 fasta: This is not an incident.
15:26 fasta: (and even automated testing is a weak substitute for proof)
15:26 asumu: Anyone have git HEAD built and DrRacket available?
15:26 asumu wants to test something
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15:28 dyoo: fasta: please submit a bug report.  It _does_ reach all the core developers: we get email on every bug submitted.  Let's not have this flaw get misplaced.
15:30 dyoo: fasta: There is an automated testing setup for the Racket project.  (http://drdr.racket-lang.org/).  Dunno what the status is for exhaustively testing DrRacket specifically.
15:31 dyoo: asumu: just built.  What do you want to try?
15:32 asumu: dyoo: can you try the "check syntax" button on a file (just "#lang racket" is fine) and see if it hangs?
15:32 dyoo: ok, will do now.
15:32 dyoo: asumu: yup, hangs on HEAD.
15:32 asumu: :(
15:33 asumu: Okay, will submit a report.
15:33 (part) snorble_
15:34 greghendershott: I built from HEAD earlier today and it doesn't hang for me.
15:34 greghendershott: "version 5.3.2.3--2013-02-01(86bff2fa/d) [3m]"
15:35 greghendershott: On OS X 10.7.5
15:35 greghendershott: Start DrRacket, just "#lang racket", click "Check Syntax".
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15:37 greghendershott: So FWIW it doesn't seem to be 100% reproducible. Clearly it's happening for some people, but it's not "OMG why don't they even try to use it" category, IMHO.
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15:38 asumu: Ok, thanks. It's at least always reproducible on my machine. The worst bugs are the ones that only show up on some platforms occasionally.
15:39 dyoo: I do think it would be nice to have the equivalent of the Apple "Snow Leopard" release for Racket: no new features: just bug fixes.
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15:48 dyoo: fasta: bug submitted as: http://bugs.racket-lang.org/query/?cmd=view&pr=13477.  Any more information you can provide, such as platform, os version, etc., would be really helpful to help reproduce.
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17:03 dyoo: errstr: follow up on that bug you noticed in parser-tools/lex.  Patch written and currently waiting for acceptance.  https://github.com/dyoo/racket/commit/544918465b67cbf2e8ad40bd3c2b3ea90f33c085
17:03 rudybot: http://tinyurl.com/a7fv2aw
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18:23 RacketCommitBot: [racket] plt pushed 4 new commits to master: http://git.io/9zPI6A
18:23 RacketCommitBot: racket/master 318c45a Matthew Flatt: Scribble: fix docs on Latex commands for parts and part references
18:23 RacketCommitBot: racket/master f8c7a79 Matthew Flatt: fix `raco link' test
18:23 RacketCommitBot: racket/master 5dda7c4 Matthew Flatt: work around C library bug in powl()
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19:28 dyoo: I hope everyone has a happy weekend!
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19:53 lewis1711: rudybot, #lang typed/racket
19:53 rudybot: lewis1711: <sigh> ok I've given up on finding an efficient way to do (Setof Any) -> (Setof String).  I'm ust unable to get my head around the typed/racket machinery.
19:54 lewis1711: LOL
19:54 lewis1711: rudybot: #lang typed/racket
19:54 rudybot: lewis1711: rudybot, init typed/racket
19:54 lewis1711: aw
19:55 lewis1711: http://pastie.org/6027502 anyone know why this doesn't type check? :/
19:55 basepi: i want to (display "blah" <somesortofbuffer>) and then read from that buffer.  so that when i read, it would just read in the symbol blah (no quotes, it's not a string).  is that possible?
19:56 basepi: i know i could display to a file, then read from that file, but i'd prefer to do it with buffers so i didn't actually have to write files
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20:04 jonrafkind: are you asking how to make <somesortofbuffer> ?
20:04 jonrafkind: use (open-output-string)
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20:04 dyoo: basepi: use open-output-string
20:04 jonrafkind: or potentially `open-output-bytes' or whatever
20:04 jonrafkind: dyoo, how do you see text wtihout being here?
20:04 jonrafkind: are you.. magic?
20:04 tbelaire: I'm going to try and implement 2-3 finger trees in racket
20:04 dyoo: basepi: http://docs.racket-lang.org/reference/stringport.html#%28def._%28%28quote._~23~25kernel%29._open-output-string%29%29
20:04 rudybot: http://tinyurl.com/b5nznbg
20:04 tbelaire: from the list of projects
20:05 tbelaire: how should I represent a monoid though?
20:05 tbelaire: Should I make it a struct with the id and mplus?
20:05 dyoo: jonrafkind: just got home, and first thing to do is look at the irc logs of course. ;)
20:05 jonrafkind: loooooooool
20:05 jonrafkind: you are dedicated brutha
20:05 tbelaire: Is there something that does monoids already?
20:07 dyoo: tbelaire: not sure.  Maybe something in the PLaneT repository?  Doing a quick check...
20:08 dyoo: tbelaire: the only thing I saw that might be remotely related was http://planet.racket-lang.org/package-source/toups/functional.plt/1/1/planet-docs/better-monads-guide/index.html
20:08 rudybot: http://tinyurl.com/bgz6rra
20:08 dyoo: but that's monads, not monoids... :(
20:08 basepi: dyoo: thanks, i was being dumb, using read-line instead of read
20:08 basepi: that was my problem
20:08 dyoo: basepi: no problem!
20:08 tbelaire: Eh, ok I feel like I can roll my own without shame then
20:08 basepi: also thanks jonrafkind, just being dumb, see above
20:09 tbelaire: and maybe clean it up with some pre-built ones for common types
20:09 tbelaire: But that sounds like another project now
20:09 dyoo: tbelaire: that's how it starts.  :)
20:11 tbelaire: Ah, I just wanted something small to get started with.
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20:12 tbelaire: Also, earlier, I was going to use hash tables, and I noticed the lack of functions like map for them
20:12 tbelaire: you end up using for/hash
20:13 tbelaire: which works, but I was thinking of adding functions like hash-map-values, hash-map-keys
20:13 tbelaire: to map functions over them
20:13 tbelaire: but I couldn't find where the rest of the hash functions were implemented
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20:14 tbelaire: I found some basic hash functions in ./collects/racket/private/hash.rkt
20:14 tbelaire: but that doesn't look like the right place for more high level ones
20:15 tbelaire: Do you know where they live?
20:15 tbelaire: Or, perhaps a more general question, how to find where things are defined?
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20:15 asumu: tbelaire: open a DrRacket tab, type identifier, and then I think you can either hover over it or right click.
20:16 asumu: And there's an option to go to its definition, I think.
20:16 asumu: (I would test it now but I'm cooking)
20:16 tbelaire: Oh, ok
20:16 lewis1711: tbelaire, look at for/hash
20:16 tbelaire: I was trying to use ag and grep
20:16 lewis1711: (though i can't figure out how to iterate over a hash table with the for-forms)
20:17 lewis1711: rudybot: (for/hash ([kv #hash((a . 1))]) kv)
20:17 rudybot: lewis1711: error: context expected 1 value, received 2 values: 'a 1
20:18 lewis1711: rudybot: (for/hash ([kv #hash((a . 1))]) (values kv))
20:18 rudybot: lewis1711: error: context expected 1 value, received 2 values: 'a 1
20:18 tbelaire: (for/hash ([(k v) (in-hash #hash((a . 1)))]) v)
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20:18 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/moid4A
20:18 RacketCommitBot: racket/master a90434b Robby Findler: avoid a deadlock introduced in recent identifier highlighting commit
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20:18 tbelaire: rudybot: (for/hash ([(k v) (in-hash #hash((a . 1)))]) v)
20:18 rudybot: tbelaire: your sandbox is ready
20:18 rudybot: tbelaire: error: context (lexical binding) expected 2 values, received 1 value: 1
20:18 lewis1711: rudybot: (for/hash ([(k v) #hash((a . 1))]) (values k (add1 v)))
20:18 rudybot: lewis1711: ; Value: #hash((a . 2))
20:19 lewis1711: there we go :)
20:19 lewis1711: mapping over a hash
20:19 tbelaire: Ah, but that's exactly why I wanted to make it a simple function
20:20 tbelaire: since it took 4 tries to get it
20:20 lewis1711: to be fair, I keep forgetting how to handle multiple values, and it's also the first time I'd used it
20:20 lewis1711: some languages when you do this return a tuple that you have to deconstruct, so i was confused by that
20:21 lewis1711: also the for forms are really powerful
20:21 lewis1711: I almost consider list operations old fashioned now, because they only work on lists
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20:22 dyoo: tbelaire: extremely raw, but here's one way to figure out where things come from: https://gist.github.com/4695459
20:23 tbelaire: Thanks
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20:23 dyoo: But probably using the arrows and right click with DrRacket will be easier.  :)
20:24 tbelaire: I didn't see it in DrRacket... It just said imported from racket
20:24 dyoo: Technically, that's true.  What's happening is the "racket" base language is re-exporting definitions that it required from the private stuff
20:25 tbelaire: Ah, it's in more-scheme.rkt I think
20:26 tbelaire: That's a well named file...
20:26 dyoo: If you right click on an identifier, there often is an option called "Jump to definition", and usually that does the right thing.
20:27 dyoo: ok, gotta go.  Must play skyrim.  :P
20:28 tbelaire: Have fun
20:28 tbelaire: Thanks
20:28 lewis1711: you know actually the more I think about it, the more I reckon using hash as a sequence like that should return tuples, not multiple values
20:28 (part) dyoo
20:28 tbelaire: I don't really know what's up with `values`
20:28 lewis1711: you don't create hashes using mutliple values, you use tuples. I mean... improper lists. or whatever they are called
20:29 tbelaire: It really could be tuples most of the time
20:29 tbelaire: I don't know why it is there, other than lack of great tuples
20:29 lewis1711: I dunno. schemers love multiple values
20:29 lewis1711: great tuples? what's wrong with lists and improper lists?
20:30 lewis1711: I do struggle to see the point of multiple values a lot of the time though
20:30 tbelaire: I do use lists as tuples
20:30 tbelaire: but it feels 'wrong' somehow
20:30 tbelaire: compared to haskell or python tuples
20:30 lewis1711: really? hmm
20:31 tbelaire: I tend to think of lists as homogenious
20:31 lewis1711: I can't even remember why pyhton has tuples since it's dynamically typed
20:31 lewis1711: haskell needs a way of dealing with heterogeneous list things
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20:32 lewis1711: rudybot, what's the point of multiple return values?
20:32 rudybot: lewis1711: Multiple values are a bit odd
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20:33 tbelaire: I dunno.  I mean most of the time there is a overreaching type
20:33 ijp: lewis1711: I think you can do it in haskell with rank-n types
20:33 ijp: though it wouldn't be much use
20:33 ijp: lewis1711: and in python, tupbles are immutable, so I guess they can be done more efficiently
20:34 neilv: multiple values you use when you want to return multiple values from a procedure without defining a struct for them
20:34 tbelaire: And I would still argue that lists should contain similar things, and tuples different types of things
20:35 ijp: tbelaire: I repreesnt monoids by a record type in my fingertrees library
20:36 tbelaire: Ah, well, then if there's already a fingertrees library, it might be good to take it off the sample-projects list
20:36 ijp: well, internally that is. externally, I just ask them to pass in the three relevant procedures when using make-fingertree since I don't want to scare people off
20:36 tbelaire: https://github.com/plt/racket/wiki/Intro-Projects
20:36 tbelaire: That' what I was thinking I would do
20:37 lewis1711: neilv, I suppose. hmm
20:37 ijp: I assumed racket would already have them in the pfds package, so I didn't bother announcing them on the racket list
20:37 lewis1711: now that there's more people... http://pastie.org/6027502 anyone know why this doesn't type check? :)
20:37 ijp: my focus was on r6rs portablility
20:37 tbelaire: Uhh I didn't see them explicitly listed in the pfds package
20:38 tbelaire: I did check that
20:38 ijp: maybe they weren't, I should have checked myself
20:38 tbelaire: I was just thinking that I would like to do something for racket
20:38 tbelaire: I also was checking for assq instead of hash and I think that's already all fixed up
20:39 ijp: https://github.com/ijp/pfds/blob/master/fingertrees.sls
20:39 tbelaire: .sls?
20:39 ijp: it'd certainly be more efficient if done in a racket specific manner
20:40 ijp: tbelaire: common r6rs extension
20:40 ijp: common extension for an uncommon standard
20:41 tbelaire: ok
20:41 tbelaire: Well if I made that extra hashtable functions, would they get pulled in?
20:41 tbelaire: I think they would be valuable
20:43 ijp: I think they probably would
20:43 ijp: asumu: that implementation is naïve, but will run in Racket, if you want to add it to your pfds package
20:44 ijp: if you shame me, I might even optimise it
20:45 ijp: tbelaire: I also represent monoids by records in a different package I have, but it was mostly for messing around and I never did anything with it
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20:45 tbelaire: Oh, I also like the define-datatype from the student languages
20:45 tbelaire: enough that I re-implemented them again once we moved to full racket at school
20:45 tbelaire: http://pastie.org/6027611
20:46 tbelaire: Oh, it would be cool to work with the wiimote
20:47 tbelaire: That'd mostly be ffi bindings, right?
20:48 tbelaire: Uhh, would hash-map-values and hash-map-keys be good names?
20:48 tbelaire: or would map-hash-values
20:49 tbelaire: be better, since I don't want to have people think `hash-map`-values
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21:10 oaisdjfoiasjdfio: blah
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21:11 lewis1711: tbelaire, I still don't get why you're doing this. (map f (hash-values ht))
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21:40 asumu: ijp: oh awesome, I will add it sometime. Thanks.
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21:47 tbelaire: lewis: it returns a hash table.
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