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03:16 lewis1711: http://pastebin.com/WrgrE0qy I recently renamed table.rkt. however this error is popping up even to modules that don't require it. even when *their* modules don't require it. whats up?
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03:20 lewis1711: It's not giving me a line number so I am unsure where to go
03:24 lewis1711: eh I just had to visit everything
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04:13 lewis1711: how do I rename something I am contracting out?
04:14 mithos28: (contract-out (rename orig-id id contract-expr))
04:16 lewis1711: mithos28: tried that :/
04:16 lewis1711: rudybot: (define a 42)
04:16 rudybot: lewis1711: your sandbox is ready
04:16 rudybot: lewis1711: Done.
04:16 lewis1711: rudybot: (provide (contract-out (rename a b integer?)))
04:16 rudybot: lewis1711: error: #<undefined>:1:0: provide: not at module level in: (provide (contract-out (rename a b integer?)))
04:17 mithos28: just post your code
04:17 lewis1711: http://pastebin.com/zWq6yTkf
04:17 lewis1711: ugh
04:17 lewis1711: brackets, nevermind
04:18 mithos28: What was the error message?
04:18 lewis1711: malformed close
04:18 lewis1711: doesn't regular
04:19 lewis1711: I was confusing rename with rename-out, which takes bracketed args
04:19 mithos28: ah
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09:34 asvil: does anyone have win/mingw environment? there is Matthew Flatt's commit for mingw supporting, but drracket still does not work.
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10:45 jroes: anyone know how to make the repl a bit more friendly? for example, I can't use C-p, C-n, up arrow, or down arrow without getting control characters on my screen
10:48 asvil: jroes readline?
10:49 asvil: jroes: try   racket -il readline
10:50 jroes: much better, thanks!
10:50 jroes: I should probably just be doing everything in emacs, but I didn't have a feel for how easy that would be to integrate and I'm just doing a short project :)
10:52 jroes just found xrepl, very nice
10:52 asvil: emacs is really excellent ide, no, not just ide, it is os, i can paste my config for emacs/quack/geiser
10:52 jroes: I use emacs for everything else (dayjob, Ruby dev stuff)
10:54 asvil: if so, I recommend emacs even for small projects
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12:18 asumu: jroes: JFYI (saw you commenting in #scheme), Racket is quite fast even without compilation to C because of JIT compilation.
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12:21 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/ph2dYw
12:21 RacketCommitBot: racket/master fc112cc Matthew Flatt: scribble: render "incremement" and some other chars for Latex/PDF...
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12:34 jroes: asumu: haha, thanks! :)
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12:43 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/yRuQmg
12:43 RacketCommitBot: racket/master c627f9e Robby Findler: Add in more shortcuts, following Matthew's recent commit...
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13:21 jroes: having a little trouble understanding when/when not to use '
13:21 jroes: if I've defined str with (define str "hello world"), how do I get this to return ("hello world")? (if (= (+ 1 1) 2) (str) ("not hello world"))
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13:54 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/gluzug
13:54 RacketCommitBot: racket/master b843a45 Jay McCarthy: Fixing in an error in how paths that went outside the filesystem to...
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13:58 dyoo: jroes: are you doing something like How to Design Programs?  http://www.ccs.neu.edu/home/matthias/HtDP2e/
13:58 dyoo: If you've defined a constant like (define name "jroes")
13:59 dyoo: then you just say "name" to get back "jroes"
13:59 dyoo: example:
13:59 dyoo: rudybot: (define name "jroes")
13:59 rudybot: dyoo: Done.
13:59 dyoo: rudybot: name
13:59 rudybot: dyoo: ; Value: "jroes"
13:59 dyoo: rudybot: (string-append "hello " name)
13:59 rudybot: dyoo: ; Value: "hello jroes"
14:00 dyoo: rudybot: (list name name name)
14:00 rudybot: dyoo: ; Value: ("jroes" "jroes" "jroes")
14:00 jroes: nice, thanks
14:00 jroes: I'm actually just coming from another language and decided I would code up a quick challenge in scheme
14:01 dyoo: If you come from another language like Java, just remember that the parens are significant in Racket
14:01 dyoo: Anytime to see something like (x y z)
14:02 dyoo: consider it as if you were doing this in java: x(y z)
14:03 dyoo: which language are you coming from?
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14:07 jroes: coming from Ruby, Python, C, a few others
14:08 jroes: the issue I was having was that I needed ("hello world") as a list
14:08 jroes: ended up using (list str)
14:08 dyoo: jroes; ok, cool.  If you haven't seen the guide yet: http://docs.racket-lang.org/guide/index.html
14:09 jroes: perhaps a slightly more advanced problem - I'm expecting to be able to read from stdin until EOF (and I'm expecting that C-d will send an EOF char), but when I use something like ,,read-all nothing will send an EOF
14:09 dyoo: Hmm, you should be getting eofs.  Let's see:
14:10 dyoo: rudybot: (define p (open-input-string "this is\na\nstring port"))
14:10 rudybot: dyoo: Done.
14:10 dyoo: rudybot: (read-line p)
14:10 rudybot: dyoo: ; Value: "this is"
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14:11 dyoo: rudybot: (read-line p)
14:11 rudybot: dyoo: ; Value: "a"
14:11 dyoo: rudybot: (read-line p)
14:11 rudybot: dyoo: ; Value: "string port"
14:11 dyoo: the next value should be an eof
14:11 dyoo: rudybot: (read-line p)
14:11 rudybot: dyoo: ; Value: #<eof>
14:11 dyoo: there it is.
14:11 jroes: hm, I'm attempting to read everything into a single var
14:11 jroes: I could map over read-line I guess
14:12 dyoo: Are you reading as a whole string then?
14:12 jroes: yeah, that's the intent anyways
14:13 dyoo: use port->string http://docs.racket-lang.org/reference/port-lib.html#(def._((lib._racket/port..rkt)._port-~3estring))
14:13 jroes: ah cool
14:13 dyoo: other functions on that page may also be helpful to you
14:13 jroes: yep, this is looking very helpful, thanks
14:14 dyoo: Note that ports can act like sequences, so you can even do for loops across them, like this:
14:14 dyoo: rudybot: (define p (open-input-string "a\n\b\nc"))
14:14 rudybot: dyoo: Done.
14:14 dyoo: rudybot: (for ([line (in-lines p)]) (printf "line: ~s\n
14:14 rudybot: dyoo: I thought that would freak you out. But no, 105 by itself is not identation syntax, it's inlines and f(x) notation *between curly brackets* only.
14:15 dyoo: sorry, typo
14:15 dyoo: rudybot: (for ([line (in-lines p)]) (printf "line: ~s\n" line))
14:15 rudybot: dyoo: ; stdout: "line: \"a\"\nline: \"\\b\"\nline: \"c\"\n"
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14:50 samth: jeapostrophe: the github link here: https://plt-etc.byu.edu:9004/info/pfds is broken
14:51 jeapostrophe: samth: he didn't enter a valid github url
14:51 samth: asumu: ^
14:51 rindolf: Hi all.
14:52 asumu: Oh, so that's the problem.
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14:53 asumu: Should work now
14:53 asumu: maybe installing it will actually work now too
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14:54 asumu: I get a "input port is closed" error from gunzip though. It still seems to be installing...
14:58 asumu: Hmm... I don't think the set implementation in pfds is correct. (member? 188888 (set equal? 1 "foo")) => #t
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15:57 samth: jeapostrophe: it would be nice to be able to distinghuish surprising failures in DrDr from others
15:57 jeapostrophe: what do you mean? like things that have random set?
15:58 samth: jeapostrophe: that's one example
15:58 samth: but maybe just have another property
15:58 samth: depends on the interpretation of 'random'
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16:04 Cryovat: 5Ooh
16:05 Cryovat: -5
16:05 Cryovat: Is that link above "Planet 2.0"?
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16:08 stamourv: Cryovat: Yes.
16:08 Cryovat: The layout is a big improvement
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16:09 Cryovat: ...erk
16:09 Cryovat: "Passwords are stored in the delicious SHA1 format"
16:09 Cryovat: I really hope that's temporary
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16:37 dyoo_: Cryovat: do you mean the phrasing of the sentence: "Passwords are stored in the delicious SHA1 format", or do you mean the hashing algorithm?
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16:40 Cryovat: The hashing algorithm
16:40 Cryovat: If it's just one pass SHA1, that's not very secure
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16:42 stamourv: Cryovat: I don't know the details of the implementation, but I'm sure jeapostrophe would accept patches to make it more secure. ;)
16:45 Cryovat: I'd like to contribute
16:45 Cryovat: But I'm terrified of anything password related
16:46 stamourv: Yeah, me too.
16:46 Cryovat: http://hashcat.net/oclhashcat-plus/
16:46 Cryovat: if you have a beefy computer with a powerful gpu, you can check a terrifying amount of SHA1 passwords per second
16:46 Cryovat: There's a graph a bit down that page
16:47 Cryovat: graph -> table
16:49 stamourv: That's pretty scary.
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16:50 dyoo: Cryovat: what should we look at to improve the hash?
16:51 Cryovat: The general advice I've seen online is to use http://en.wikipedia.org/wiki/PBKDF2
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16:52 Cryovat: That or bcrypt
16:54 dyoo: Ok.  looking for bcrypt implementations.  Paul Graham mentions that he has an implementation: http://news.ycombinator.com/item?id=3099563
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17:03 soegaard: Just stating the obvious (haven't looked at the code), but a salt should also be used.
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17:04 dyoo: A problem with trying to find a bcrypt implementation for Scheme or Racket is that the first hit is the paper the guys wrote: "A Future-Adaptable Password Scheme"…
17:06 soegaard: :-)
17:07 Cryovat: http://gauche.git.sourceforge.net/git/gitweb.cgi?p=gauche/Gauche;a=tree;f=ext/bcrypt;h=6ee1d0c76020dddb69d17459e84b32b81f35a1fd;hb=HEAD
17:07 rudybot: http://tinyurl.com/bdoq4xf
17:08 dyoo: Thank you.  I couldn't find the implementation that pg mentions in the Hacker News post, and when I look at the "implemenation" of the crypt functions in Arc, I cry.  https://github.com/nex3/arc/blob/master/lib/crypto.arc
17:08 Cryovat: Looks like the one referred to in the discussion linked above wraps a c file
17:08 Cryovat: Haha
17:08 Cryovat: Wow
17:08 dyoo: do you see that crazyness?  *sigh*
17:09 soegaard: hah!
17:09 Cryovat: While it does get the work done...
17:11 soegaard: Btw http://planet.racket-lang.org/package-source/vyzo/crypto.plt/2/3/planet-docs/manual/index.html has lots of hashes besides sha1.
17:11 rudybot: http://tinyurl.com/bdy88b9
17:11 jeapostrophe: Cryovat: it's hmac-sha1 with a private key
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17:14 Cryovat: Ah, ok then :)
17:14 Cryovat stops worrying
17:15 Cryovat: Though
17:15 Cryovat: Is there a per-user salting scheme?
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17:27 dyoo: Looking back at the arc wrappers for their crypt library: I take back my initial horror reaction a little.  Given they reuse Racket's file/md5, they probably wouldn't be averse to using vyzo's functions in the PLaneT crypto library, if they had actually known about them.  It's another example of lack-of-communication hurting both communities.
17:27 Cryovat: Is Arc still active?
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17:28 Cryovat: I had the impression it had been dormant for ages
17:28 dyoo: no idea.  news.ycombinator.com is certainly still active.
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17:31 soegaard: The Arc forum is here: http://arclanguage.org/forum
17:32 greghendershott: fwiw I put an FFI for openssl SHA-2 on planet: http://planet.racket-lang.org/display.ss?package=sha.plt&owner=gh
17:32 soegaard: It seems the newest posts are mostly non-arc related though.
17:33 greghendershott: I had to do SHA-256 for Amazon web services
17:33 Cryovat: Ah, nice :)
17:33 greghendershott: Hmm this is a nice small thing I could try as my first planet 2 pkg
17:34 soegaard: On Planet2 I am missing links to documentation of the packages. Did I just happen to hit the ones without any?
17:34 greghendershott: All I really did was copy what jeapostrophe had done for the web server :)
17:35 jeapostrophe: Cryovat: no, not per user. the server has one key
17:35 jeapostrophe: soegaard: documentation links are not online yet
17:35 Cryovat: In that case you should really consider adding a salt
17:35 soegaard: okay
17:36 greghendershott: gah how did I never not notice the mzcrypto planet package?
17:37 soegaard: greghendershott: Btw did you see that Github now can host static pages? http://pages.github.com/
17:37 greghendershott: This is why planet2 will be so much better :)
17:37 soegaard: It could be used for documentation.
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17:38 greghendershott: soegaard: Yes! I've used that for some things.
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17:40 greghendershott: The special gh-master branch can be awkward (for some repos it would be nice to simply show a .html file in the repo, as such) but overall it works pretty well
17:40 greghendershott: ^ gh-pages branch
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17:41 soegaard: I haven't tried it yet.
17:41 soegaard: Did you get any response on when pygments are updated on Github?
17:41 greghendershott: It's whack a mole
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17:41 greghendershott: pygments.rb just pulled from pygments-main a day or two ago
17:42 greghendershott: then I discovered linguist needed its languages.yml updated, and I put a pull request for _that_ today
17:42 greghendershott: https://github.com/github/linguist/pull/313
17:44 soegaard: Okay, pretty close then.
17:44 greghendershott: I would hope so, but at this point I would hate to jinx it by being optimistic. :)
17:45 soegaard: well...
17:45 greghendershott: I started this in August, so ...
17:49 greghendershott: I'll keep on it until the day when square braces may stand proudly in our repos without a "error" scarlet badge of shame
17:50 soegaard: :-)
17:54 greghendershott: soegard: Oh btw re hosting doc on Github, I added a Scribble markdown output mode. So you could e.g. Scribble to your README.md for Github.
17:55 greghendershott: For simpler docs, a lighter approach than mucking with a gh-pages branch for the repo.
17:55 greghendershott: soegaard: Gah, sorry for the typo on your name!
17:56 soegaard: Don't worry.
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17:59 soegaard: I saw that. I'll need to check the source at some point to see how one writes a new renderer. It would be nice to have a renderer that can produce iBooks (which mainly consists of html-documents).
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18:11 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/bbAKsQ
18:11 RacketCommitBot: racket/master 77e6875 Asumu Takikawa: Doc typo
18:11 RacketCommitBot: racket/master 2bc1528 Asumu Takikawa: Add type for `xor`
18:11 RacketCommitBot: racket/master 9c70f33 Asumu Takikawa: Expand on `quote-syntax` docs
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18:24 stamourv: eli: https://github.com/blog/1347-issue-attachments
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18:46 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/BUhzng
18:46 RacketCommitBot: racket/master 9865182 Neil Toronto: Fixes, docs, and API changes for `math/statistics'...
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20:26 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/jaX6qw
20:26 RacketCommitBot: racket/master 764f693 Neil Toronto: Minor `math/statistics' doc fixups
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21:17 asumu: Hmm, I managed to break raco decompile but it's hard to reproduce the bug.
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21:34 asumu: Whoops, found a typo in R6RS.
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21:37 jonrafkind: a good one?
21:38 asumu: No, it's pretty boring. Just a missing word.
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22:07 sw2wolf: What does #' and #% mean ?   In CL, #' means function, how about racket ?
22:08 jonrafkind: #'a means (syntax a) like 'a means (quote a)
22:08 asumu: sw2wolf: #' is an abbrevation for `syntax`.
22:08 jonrafkind: #% is nothing itself. #%a is an identifier
22:08 asumu: rudybot: #'foobar
22:08 rudybot: asumu: your sandbox is ready
22:08 rudybot: asumu: ; Value: #<syntax:1:2 foobar>
22:08 asumu: rudybot: #'(+ 1 2)
22:08 rudybot: asumu: ; Value: #<syntax:1:2 (+ 1 2)>
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22:09 jonrafkind: haven't you asked this before, btw?
22:09 sw2wolf: thanks ! https://github.com/shriram/roman-numerals/blob/master/roman-macros.rkt makes me hard to understand
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22:11 sw2wolf: can i regard `syntax` as `macro` in  CL ?
22:12 jonrafkind: i doubt it but im not sure.. what does 'macro' do in CL
22:13 sw2wolf: macro in CL will be expanded before evaluated ?
22:13 jonrafkind: (syntax a) creates a syntax object out of the symbol a
22:13 sw2wolf: (defmacro foo (a b) `(+ ,a ,b))
22:14 jonrafkind: a syntax object is a piece of data just like anything else, a number or a string
22:14 jonrafkind: i presume you don't mean there is an actual identifier called 'macro' in CL
22:14 sw2wolf: yes
22:14 jonrafkind: the identifier 'syntax' in racket produces a syntax object. to create a racket macro you use 'define-syntax'
22:15 jonrafkind: which works like defmacro but is hygienic and works with the phase system
22:16 sw2wolf: then in (syntax->datum #'any), what's datum ?
22:17 jonrafkind: (syntax->datum #'a) unwraps the symbol from the syntax object so you get back the symbol 'a
22:17 sw2wolf: it seems i canot find corresponding part of racket in CL macro ?
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22:17 jonrafkind: his goal is to convert the syntax object to a string, so you have to get the raw data out of the syntax object, the symbol, then convert the symbol to a string
22:17 jonrafkind: in CL everything is done with symbols so you dont need the first part
22:17 neilv: sw2wolf: http://docs.racket-lang.org/search/index.html?q=datum
22:18 sw2wolf: yes, seems a bit understanding
22:18 neilv: sw2wolf: there is good documentation, with a search feature
22:19 sw2wolf: neilv: yes, i need to see the docs
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22:28 sw2wolf: CL background sometimes is a obstacle for me to study racket ?  thanks, it it time for lunch now
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22:40 didi: sw2wolf{away}: I don't think it is.
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23:46 asumu: Hmm, fun. To fix an issue with type system unsoundness, I caused another issue: incomprehensible error messages.
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23:46 asumu: I get (correct) error messages like "Expected a, but got a"
23:46 asumu: (the 'a's aren't the same thing)
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