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00:40 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/AnL1qg
00:40 RacketCommitBot: [racket/master] Fix contracts on several I/O functions - Asumu Takikawa
00:40 RacketCommitBot: [racket/master] Fix docs for radio-box% - Asumu Takikawa
00:40 RacketCommitBot: [racket/master] Fix docs for reencode-input-port & reencode-output-port - Asumu Takikawa
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01:13 zwak: what do you guys think about these criticisms of Racket?  http://programmers.stackexchange.com/questions/41045/scheme-vs-common-lisp-which-characteristics-made-a-difference-in-your-project/80919#80919
01:13 rudybot: http://tinyurl.com/cm4ersu
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01:16 mithos28: He seems like he wants CL and Racket isn't CL so it doesn't do exactly everything the same and is thus bad
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01:18 mithos28: He complains that he had to reimplement unwind-protect, which already exists as dynamic-wind
01:19 mithos28: His complaint about restarts is valid in that racket doesn't have them natively. But doesn't explain why they are needed.
01:21 mithos28: I don't know about the complaint about HTMLPrag, because the first hit on google (for me at least) is a library by that name in racket.
01:22 scott_: mithos28: at that part he's saying CL lacks something like racket's HTMLPrag library
01:23 mithos28: ah, makes more sese
01:23 mithos28: sense*
01:23 scott_: btw, I'm brand new to Racket. looks like it's going to be fun
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01:50 zwak: thanks .. I wasn't trying to troll; I'm just interested
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01:59 asumu: zwak: some of those points are just not knowing idiomatic Racket. Racket macros aren't really harder than defmacro if you know how to use it.
02:00 asumu: And AFAIK, unwind-protect is actually superceded by dynamic-wind.
02:01 asumu: But anyway, didn't take it as trolling. Welcome to the party.
02:02 asumu: (also, I'm curious why the author thinks the LOOP macro is better than the 'for' family)
02:04 asumu: (oh, I guess I duplicated some of what mithos28 has already said; IIUC, restarts should be pretty easy to implement in a library)
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03:28 scott_: I'm not sure I understand the distinctions between display, write, and print. When should I use each one?
03:28 mithos28: write is useful for serializing simple data
03:29 jonrafkind: http://docs.racket-lang.org/reference/printing.html?q=write&q=wrte did you read this already?
03:29 mithos28: if you 'write' something, you can 'read' it back in
03:29 scott_: jonrafkind: actually, I just found that
03:29 jonrafkind: heh
03:29 scott_: I was reading the docs for the individual functions
03:30 jonrafkind: mostly you should use print or printf
03:30 mithos28: I think the most important thing about print is that the environment can change how stuff prints to make it prettier
03:30 scott_: is that how DrRacket prints pictures for example?
03:31 mithos28: I believe so
03:31 scott_: it appears so
03:31 scott_: display and write both print "#<pict>" instead
03:33 scott_: what would be the idiomatic way to write some string followed by \r\n to some port? (for IRC)
03:34 mithos28: I would use (fprintf port "~a\r\n" str)
03:34 scott_: alright, thanks
03:35 mithos28: but I highly doubt you want to do that, unless you have already sanitized the string
03:35 mithos28: not from malicious users, but from users accidentily putting in newlines
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05:41 aes: Is there any obvious way to examine my environment? Like dir() in Python, or inspecting _G in Lua, ...?
05:54 soegaard: What do you mean by environment?
05:55 aes: Well, the tutorial starts with circle and rectangle, right? I'd like to ask what other symbols are defined
05:56 soegaard: Do you have a link to the tutorial?
05:56 aes: Uh, sure
05:57 aes: http://docs.racket-lang.org/quick/index.html
05:57 soegaard: Just click on circle.
05:57 soegaard: That brings you to the documentation on circle - and that lists all the other operations too.
05:58 aes: Ok, but there's no reflection or anything like that in the language itself?
05:58 soegaard: There is, but I find it much easier to use the documentation.
05:59 soegaard: You can use module->namespace to turn a module into a namespace.
05:59 soegaard: http://docs.racket-lang.org/reference/Namespaces.html?q=module%20names
06:00 soegaard: Or perhaps better, use (current-namespace) .
06:00 aes: Really? Because being able to see where you are is kind of important..
06:00 soegaard: Then use namespace-mapped-symbols.
06:01 aes: Aha, there it is.
06:01 soegaard: Assumuing that you have just run the module you are writing, you will get the correct namespace.
06:02 soegaard: The list is of mapped names are most likely long?
06:03 aes: Yeah. I need to read a bit about how namespaces work..
06:03 aes: yep.
06:03 aes: (long) That's fine, it just means there are a lot of toys
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07:59 Haffe: Hmmmm.
07:59 Haffe: I have to get something to eat for lunch.
07:59 Haffe: What do you say to a frozen pizza?
08:05 soegaard: Sounds cold.
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10:04 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/n_nctA
10:04 RacketCommitBot: [racket/master] add a note about how to build documentation to the planet documentation building step - Robby Findler
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13:58 sizz: can someone please explain why numbered? works correctly, but numbered2? does not?  http://paste.lisp.org/display/131098
13:59 mithos28: this is the error (eq? (cadr aexp) (or (quote +) (quote x) (quote ^))
14:00 mithos28: the  (or (quote +) (quote x) (quote ^)) part evaluates to '^
14:00 mithos28: you probably want (member (cadr aexp) '(+ x ^))
14:01 mithos28: Also you might want to look at match
14:02 sizz: okay, thanks. i'm just working through the Little Schemer. numbered? was their example, but I thought I could simplify it so I wrote numbered2?
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14:30 Haffe: I think I found another inconsistency in the GUI toolkit.
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15:21 chimeracoder: anybody here play around with spin at all (https://github.com/dmacdougall/spin) ?
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18:09 neilv: i don't recall seeing a number like 1.0f0 before
18:11 neilv: some library was forcing the ieee fp precision when converting from an external representation
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18:35 neilv: rudybot: eval (equal? 1.0 1.0f0)
18:35 rudybot: neilv: ; Value: #f
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18:42 neilv: rudybot: eval (* 1.0f0 2.0)
18:42 rudybot: neilv: ; Value: 2.0
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18:44 scott_: why does racket have an algol 60 implementation?
18:45 neilv: rudybot: eval (define (number->single-precision x) (read (open-input-string (format "~Af0" x))))
18:45 rudybot: neilv: Done.
18:45 neilv: is there a sane way to do that?
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20:35 RylandAlmanza: Hi, I'm trying to write a simple irc bot, and was having trouble. So, I wrote a simple client that sends a string, and a simple server that prints the string. It appears my problem is that the client isn't sending anything.
20:35 RylandAlmanza: Can someone tell me why this won't work: https://gist.github.com/3390565
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21:28 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/wAcHTg
21:28 RacketCommitBot: [racket/master] remove 'planet' from plt/bin (raco planet does the same thing and - Robby Findler
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21:29 asumu: RylandAlmanza: my first instinct is that it has to do with buffering on I/O. Try (flush-output)
21:32 asumu: (that seemed to fix it when I tried your code)
21:32 asumu: You can set the port to not buffer if that's the behavior you want.
21:35 RylandAlmanza: asumu: Thanks for responding! Unfortunately, it didn't seem to work for me. Can you show me what you used for the server's code?
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21:41 asumu: RylandAlmanza: I didn't set up a server. I just did 'netcat -l 9999'
21:41 asumu: Did you flush the right port? You want (flush-output out), I think.
21:42 asumu: BBL, going on a walk.
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21:46 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/Kl_pJg
21:46 RacketCommitBot: [racket/master] improve the distribution building portion of the docs to point - Robby Findler
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21:57 sizz: Does anyone know if little schemer/seasoned schemer will get new editions?
21:58 offby1 stares blankly
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22:37 asumu: sizz: no idea, why?
22:37 sizz: The Little Racketeer would be cool.
22:41 scott_: what's the best way to split a string by only the first occurance of whitespace? (split "foo bar baz") => '("foo" "bar baz")
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22:46 asumu: rudybot: (define (split-first str) (define split (string-split str)) (cons (car split) (apply string-append (cdr split))))
22:46 rudybot: asumu: your sandbox is ready
22:46 rudybot: asumu: Done.
22:46 asumu: rudybot: (split-first "ab cd ef")
22:46 rudybot: asumu: error: reference to an identifier before its definition: string-split in module: 'program
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22:46 asumu: rudybot: (version)
22:46 rudybot: asumu: ; Value: "5.2.900.1"
22:46 asumu: That works in 5.3...
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23:02 asumu: (though a regex is probably a smarter way)
23:03 scott_: regex sounds good, I was just wondering if I was missing something in the string functions. in a couple scripting languages I've used there's something like "foo bar baz".split(2) that returns a 2-item list
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23:27 offby1: asumu: yeah, I've been lazy about updating
23:28 offby1: asumu: every time I update, the first time I restart the bot it spends about 30 minutes recompiling the scribble docs or something before it actually starts, so I always put it off
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23:51 jyc: is it possible to execute lua code from within racket?
23:51 jyc: (like lua's C bindings)
23:51 jyc: I suppose I could use racket's FFI, but would like to know if anyone has already implemented it first
23:52 scott_: a quick google doesn't find anything, I guess you'd have to do it yourself
23:52 scott_: racket's FFI looks quite nice though
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