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01:00 mithos28: ugh why is raco make broken? timestamps are not enough
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01:08 mithos28: Is there a way to tell raco make not to use timestamps?
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01:48 jonrafkind: mithos28, you mean you touch a bunch of files that shouldnt be rebuilt?
01:48 jonrafkind: actually I thought matthew had changed things to use a checksum at some point
01:48 mithos28: no, that if a file is old that its checksum is still checked
01:49 mithos28: I 'git stash poped' a change and tried to recompile and it worked, but it wouldn't pick up my change
01:49 jonrafkind: oh i see
01:49 mithos28: had to remove the compiled file
01:50 mithos28: Correctness should come before speed
01:51 jonrafkind: i guess it should be an option, timestamp, timestamp+checksum, checksum
01:51 jonrafkind: i think scons allows the user to specify such a thing
01:51 jonrafkind: it could even just be an argument to raco make
01:52 mithos28: I think checksum should be the only option, but I understand that it would be way too expensive
01:53 jonrafkind: so having all 3 seems reasonable
01:53 mithos28: eh, I don't think you ever need just timestamp
01:54 jonrafkind: its certainly faster than doing a checksum
01:54 jonrafkind: and 99% of the world relies on just timestamp since they use make
01:54 mithos28: timestamp+checksum only checks the checksum if the timestamp is out of date
01:54 jonrafkind: right
01:54 mithos28: and checking the checksum is just as correct (modulo hash collisions) as rebuilding
01:55 jonrafkind: you mean doing a clean rebuild?
01:56 mithos28: thats what just checksum would do, but assumes that the compiler is the same
02:01 mithos28: filed a bug
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04:06 oisin123: I'm attempting to install Racket + Geiser in Emacs.  When I M-x "run-geiser", "racket", I retrieve the following error: "/usr/racket/bin/racket cannot execute binary file".  When I cd to that directory and attempt to execute the racket file, I receive the same error.  Every file in the racket bin directory has 777 for permissions.  Could anyone point me in the right direction to look?
04:06 mithos28: oisin123: How did you install racket?
04:07 oisin123: mithos28: I've used the Fedora 14 package
04:07 oisin123: (I'm running Fedora 16.)
04:09 mithos28: what does $ file /usr/racket/bin/racket return?
04:10 oisin123: Hmm - pasting failed...
04:11 mithos28: the $ is supposed to be from your prompt
04:12 oisin123: sorry, no pasting to IRC... I'm not able to type past a certain limit it seems
04:12 mithos28: ah
04:12 mithos28: gist.github.com
04:12 mithos28: that was mostly checking that it looked like a valid binary
04:12 oisin123: https://gist.github.com/3302247
04:13 mithos28: and what is the output when you run $ /usr/racket/bin/racket
04:13 oisin123: cannot execute binary file
04:14 mithos28: what is the output of uname -a
04:14 oisin123: Linux 3.4.4-4.fc16.i686 #1 SMP Thu Jul 5 20:58:10 UTC 2012 i686 i686 i386 GNU/Linux
04:15 mithos28: ok so you are on a 32 bit system and trying to run a 64 bit binary
04:15 oisin123: :| I'm sorry, thank you!
04:16 mithos28: No problem, it looks like racket 5.3 is packaged for fedora 12 for 32 bit
04:17 mithos28: hopefully that will still work
04:18 mithos28: There is also the source installer which should also work, if the package manager one doesn't because of the differences between 12 and 16
04:19 oisin123: Worked like a charm - thanks very much. :)
04:19 mithos28: No problem
04:19 mithos28: google helped out, a bit
04:20 Gertm: Is there an easy way to do a POST http request with Racket?
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04:22 mithos28: rudybot: init racket
04:22 rudybot: mithos28: your sandbox is ready
04:22 mithos28: rudybot: (require net/url)
04:22 rudybot: mithos28: Done.
04:22 mithos28: rudybot: doc post-pure-port
04:22 rudybot: mithos28: http://docs.racket-lang.org/net/url.html#(def._((lib._net%2Furl..rkt)._post-pure-port))
04:22 mithos28: gertm: Look at that
04:23 Gertm: Ok, so I'll have to write my own pairs -> bytes conversion function.
04:24 mithos28: What do you want in the post body?
04:24 Gertm: Fill in a form.
04:25 mithos28: so lines of key=value? if I remember my HTTP correctly
04:25 Gertm: mithos28: yes.
04:25 mithos28: Yes I think you will
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04:27 mithos28: rudybot: (for ((p '(("key1" . "value1") ("key2" . "value2")))) (printf "~a=~a\r\n" (car p) (cdr p)))
04:27 rudybot: mithos28: ; stdout: "key1=value1\r\nkey2=value2\r\n"
04:27 mithos28: rudybot: doc fprintf
04:27 rudybot: mithos28: http://docs.racket-lang.org/reference/Writing.html#(def._((quote._~23~25kernel)._fprintf))
04:28 mithos28: Gertm: Those should help with doing that
04:28 Gertm: Thanks, that's quite straightforward.
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08:36 veer: just for information , Racket makes a debut at coursera :  https://www.coursera.org/course/proglang , along with ML and Ruby
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10:31 asumu: Nice, go Dan Grossman.
10:31 samth: asumu: ?
10:32 asumu: The coursera thing.
10:33 samth: oh, awesome!
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10:41 asumu: samth: http://okmij.org/ftp/continuations/against-callcc.html
10:42 samth: asumu: indeed
10:45 vu3rdd: asumu: yeah! Thank goodness for not clashing with the Brown CS173 online course!
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14:09 Gertm: How lightweight/heavyweight are these 'places'?
14:09 jonrafkind: fairly heavyweight, they spawn a new process
14:10 Gertm: Ah, an entire new racket you mean?
14:10 jonrafkind: yea
14:10 jonrafkind: and it uses shared memory to talk to the other processes
14:10 jonrafkind: so basically communicating stuff is fairly expensive
14:10 asumu: jonrafkind: a question for you http://www.reddit.com/r/Racket/comments/t4c8b/installing_drracket_521_on_ubuntu_1204_x86_64/c5q2g0i
14:10 rudybot: http://tinyurl.com/9nzmx9w
14:11 asumu: Gertm: there are also 'futures' for lighterweight parallelism.
14:11 jonrafkind: hm well honestly i have no idea how unity dash works, but I just looked at installing a .desktop file for racket today
14:11 Gertm: Yes, futures look very interesting.
14:11 jonrafkind: i put it into the nightly build so i will test it tomorrow
14:11 jonrafkind: asumu, can you tell that guy that racket is /usr/bin/racket and /usr/bin/drracket /
14:11 jonrafkind: ?
14:11 asumu: jonrafkind: okay, and I'll mention the .desktop thing will work in the future.
14:12 jonrafkind: yea i hope.. trying to figure out the debian package process is a nightmare
14:22 chandler: jonrafkind: is there anything I can do to help with the .desktop process?
14:22 chandler: er, packaging, process, whatever
14:25 jonrafkind: well this is how I did it: I put 'debian/drracket.desktop usr/share/applications/' into racket.install
14:25 jonrafkind: is that enough?
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16:10 samth: Gertm, jonrafkind: places don't spawn a new 'process' in the OS sense
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16:29 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/ss4N2g
16:29 RacketCommitBot: [racket/master] allow identifiers as names, not just strings - Robby Findler
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16:49 Shambles_: asumu: Are you around?
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17:07 asumu: Shambles_: yea, hi
17:07 Shambles_: asumu: I sent the e-mail last night.  The subjectline is "Racket GUI and Sound Infelicities".  I hope it's okay.
17:08 asumu: Yeah, I saw it, looks good. Did you see that Matthew replied?
17:08 asumu: (and thanks for the feedback)
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17:09 Shambles_: I didn't see the reply.
17:09 Shambles_: All I see is a post from him on MzCOM?
17:09 asumu: http://lists.racket-lang.org/users/archive/2012-August/053423.html
17:11 Shambles_: Hmm.  Maybe that was posted to the dev list and I'm not on it.  I sent it to the users list since I was told it didn't matter where I sent it, and that was the one I'd used before.  I'm glad he got it, and wasn't upset by it.
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17:11 Shambles_: I really kinda wish GTK had been used for everything.  I at least know what to call to do most of these things in GTK.
17:16 asumu: Shambles_: FWIW, if you write extra GUI widgets for even just GTK using the FFI, that could be useful.
17:17 asumu: Either as a PLaneT package or possibly to integrate into racket/gui once someone else writes the equivalent Cocoa/Win32 widgets.
17:17 asumu: But yes, it's too bad that it's non-trivial to extend things right now.
17:18 Shambles_: With only one platform (I guess that'd be the Linux one) I don't see how it could be used.  They'd have to wait until Win32 and... what is it Mac's use?  Cocoa? versions were done.
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17:20 Shambles_: GTK lacks a ready made toolbox/accordion widget (Qt has one, and some other toolkits do), but most of the other stuff is in there.  I wonder how painful it is to get the manual memory management to work with Racket's garbage collector.
17:25 samth: Shambles_: the current gui infrastructure handles all of that, so i'd look at how it does it
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18:43 Remosi: I've just started playing with racket and it's datalog stuff.  I'd like to create a predicate foo(A,B,C) and depending on which of A,B and C are free, build an SQL query and return the results.  But I can't see how to tell which of A, B and C are free, does anyone have any pointers?
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19:27 paulscott: is there an easy to download documention set(at the point of being able to read simpler common lisp macros but little experience with racket).   Essentially I'll be at sea for 9+ months with no Internet
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19:36 danl_ndi: paulscott: an install of racket contains all the docs
19:37 danl_ndi: just point your browser at <install-dir>/doc/index.html
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19:42 danl_ndi: what's a good way to prompt for and read a string from stdin?
19:43 danl_ndi: (read-line) seems correct but immediately return <eof>
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19:53 asumu: danl_ndi: read-line should work. Though oddly it doesn't seem to work in the cmdline REPL.
19:53 asumu: In DrRacket it does what you'd expect.
19:55 paulscott: thanks
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19:55 danl_ndi: yeah if there's no data waiting it returns...... need something that waits until the port yields a linefeed/return
19:57 danl_ndi: however read works
19:59 asumu: danl_ndi: this is relevant http://lists.racket-lang.org/users/archive/2011-January/043734.html
19:59 asumu: (it's a REPL limitation)
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20:03 danl_ndi: asumu: cool thanks.
20:04 danl_ndi: workaround is to call (read-line) a second time if it returns an empty string
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20:26 eli: danl_ndi: When you type "(read-line)" and hit enter on the repl, Racket reads *just* the expression and then executes the code -- which means that the newline is still in the buffer.  It's a common confusion, and I don't think that there a good solution to that.
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20:52 danl_ndi: eli: that seems weird....
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20:59 eli: danl_ndi: Why weird?
20:59 eli: Say that I enter exactly this:
20:59 eli: (read-line) 1
21:00 eli: If you decide that the newline in the above example gets eaten by the repl, then that 1 should be eaten by the repl too so `read-line' would need to read a new line.
21:00 eli: And *that* seems weird to me...
21:00 eli: In any case, I have to go now.
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22:38 DrDuck: Do you guys know of something I could use to embedd my Racket code on my blog? I use Blogger.
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23:47 asumu: DrDuck: Yeah, scriblogify. I'll find you a link.
23:48 asumu: DrDuck: http://blog.racket-lang.org/2012/04/scribble-your-blogs.html
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