00:00 asasdasd: they say Racket.exe -f is bad...
00:01 asumu: So you should be able to (require ...) the module from the REPL
00:01 asumu: And then call main
00:02 asasdasd: cool
00:02 asasdasd: nooooo, then i'm still in the repl
00:02 asasdasd: and i can't enter text to standard in
00:02 asumu: It seems to work for me. Entering text, that is.
00:03 asasdasd: you don't get the > rompt?
00:03 asumu: Oh huh, didn't work this time.
00:03 asumu: Anyway, you can also run it with racket -tm your-file.rkt
00:04 asasdasd: tm?
00:04 asumu: -t requires the file, and -m will run the `main` function.
00:04 asasdasd: that exits almost immediately
00:05 asasdasd: eww i have to call main
00:05 asasdasd: yeah still exits
00:05 asumu: Or do a thread-wait or something.
00:05 asasdasd: like the threads don't keep it running....
00:06 asumu: Yeah, the main thread will exit unless you wait on the sub-threads.
00:07 asasdasd: ok..
00:07 asasdasd: I thnk it's working
00:07 asasdasd: nice! thanks man
00:07 asasdasd: there's no easier way?
00:10 asumu: I think that's the easiest way, but I could be wrong.
00:10 asasdasd: heh ok thanks for the help
00:11 asumu: asasdasd: also, if you don't want to define a main function, you can use a main "submodule" instead: http://docs.racket-lang.org/guide/Module_Syntax.html#(part._submodules)
00:11 asasdasd: that sounds like witchcraft...
00:12 asumu: It's actually not too complicated. The contents of the main submodule are run automatically with the racket executable.
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00:16 asasdasd: asumu: do you mean: (module main racket ... )
00:16 asasdasd: and what does "racket:" mean in that position?
00:20 asumu: asasdasd: that's the language that module is written in. It's like the #lang at the top of a normal module.
00:20 asumu: The easiest way to declare a main submodule is (module+ main ... some stuff here ...)
00:21 asasdasd: modukle+?
00:21 asasdasd: im reading
00:21 asasdasd: about it
00:21 asumu: It lets you define a submodule that inherits the definitions you have in the outer module.
00:21 asumu: So you can write some functions in your module normally, then use them inside of a (module+ main ...)
00:22 asasdasd: oh
00:24 asasdasd: I'll just define a main
00:27 ozzloy: asasdasd, submodules are actually the bomb
00:27 asasdasd: why?
00:27 ozzloy: asasdasd, you know how in python or ruby you have to do something like if __FILE__ == __MAIN__ then MAINSTUFF
00:27 asasdasd: yeah
00:28 ozzloy: and you know how when you write unit tests, you want them to run only during development?
00:28 asasdasd: well, you dont have to
00:28 asasdasd: ok
00:28 ozzloy: and not slow down execution during production runs?
00:28 asasdasd: ok
00:28 ozzloy: turns out those can be seen as the same problem
00:28 ozzloy: code that you want to run sometimes
00:28 asasdasd: ok
00:28 ozzloy: submodules solves that problem in a well defined way
00:30 ozzloy: another example is documentation
00:30 asasdasd: you need a command line argument to run the test submodule?
00:30 ozzloy: yes
00:30 ozzloy: raco test file.rkt
00:31 ozzloy: and it's less hacky than checking if the file that was run is the file that the code is currently executing
00:31 ozzloy: anyways, bbiaf
00:31 asasdasd: so raco test inports or uses the test submodule?
00:31 asasdasd: ok thanks
00:31 ozzloy: correct
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09:17 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/MEPalg
09:17 RacketCommitBot: racket/master 99301c1 Mike Sperber: Synch German string constants with latest.
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09:28 asdasdasd: Why does this (cadr '("hello", "there")) eval to ',"there" ?
09:28 asdasdasd: and not to just "there" ?
09:29 asdasdasd: and why does using quasiquote make it eval to "there" ?
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09:30 asdasdasd: oh heh
09:31 bremner: I guess you figured out you don't want commas in racket lists?
09:31 asdasdasd: yeah
09:31 asdasdasd: the comma is an unquote?
09:32 asdasdasd: but it's part of "there" since the whole thing is just regular quoted?
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09:48 bremner: right
09:48 bremner: although I'm a bit surprised it's not part of "here"
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12:31 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/akSf1Q
12:31 RacketCommitBot: racket/master 022e252 Robby Findler: add support for ╔ ═ ╗ ║ ╚ and ╝ to the latex renderer...
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12:35 Dan_: Hello, I downloaded Debian 64bit 5.3.1 - Where do I find the "Add Teachpack" function?
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12:36 mithos28: In the language menu in drracket
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12:36 Dan_: Choose Language -> Beginning Student show "teach packs <<none>>"
12:36 Dan_: but I do not see an add teach pack button
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12:37 mithos28: Is there not an add teachback button below choose language?
12:37 Dan_: No
12:37 mithos28: Interesting. That is where it is for me
12:38 Dan_: What version are you running?
12:38 mithos28: can you try switching to intermediate student
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12:38 mithos28: 5.3.1 (2f4c6774)
12:38 mithos28: on os x
12:38 Dan_: Still not there
12:39 Dan_: I am running Ubuntu 12.04
12:41 mithos28: http://imgur.com/N6EBk
12:41 mithos28: that is my ui
12:43 Dan_: Looks like the ubuntu version is broken
12:43 Dan_: I have a windows machine I can try
12:43 Dan_: -- anybody else here use drracket on Ubuntu 12.04 with teach packs?
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13:00 vyz: I use drracket on 12.10
13:06 Dan_: vyz do you see an option to add a teach pack?
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13:11 Dan_: OK I fired it up on Windows.  I see a line of menu items along the top of the application window - none of these are displayed in my ubuntu version
13:11 Dan_: one of them Language->Add Teachpacks is what I need under ubuntu
13:11 Dan_: ...  I wonder if it is a GUI/Deskop issue
13:12 bremner: maybe, I'm just installing 5.3.1 on this debian machine...
13:15 Dan_: vyz, bremmer - please let me know if you find a an Add Teach Pack option (and where you find it)
13:15 Dan_: thanks!
13:15 bremner: Dan_: I see Language -> add teach pack
13:15 Dan_: Is it along the top?
13:15 bremner: under the language menu
13:15 Dan_: (top menu item?)
13:16 bremner: yes
13:17 Dan_: OK, so my ubuntu 12.04 doesn't have that menu item displayed along the top
13:17 bremner: are you running unity?
13:17 Dan_: if that is the default, yes
13:18 Dan_: are you?
13:18 bremner: I'm running debian. And I'm running the official debian package for 5.3.1
13:19 Dan_: I think I will uninstall and reinstall
13:20 vyz: ok, when I go into languages, I see choose language
13:20 vyz: that gives me a choice from experimental langs, legacy languages, and 2 teaching languages
13:20 vyz: idk if thats what you're looking for
13:20 vyz: i don't see anything about anything "teachpack"
13:21 vyz: im running 5.2.1, gonna update
13:21 Dan_: I think it is a ubuntu / unity issue
13:22 vyz: maybe
13:22 Dan_: vyz are you doing an apt-get install
13:22 Dan_: or downloading from racket.org?
13:22 vyz: apt-get upgrade
13:23 Dan_: $ drracket Gdk: IA__gdk_window_thaw_updates: assertion `impl_window->update_freeze_count > 0' failed Gdk: IA__gdk_window_thaw_updates: assertion `impl_window->update_freeze_count > 0' failed
13:23 Dan_: Some error message come up when I launch it
13:23 vyz: if it got fixed in 5 3 1, there's probably something on the changelog, i just dont know where that is
13:26 Dan_: Looks like people have had a similar problem before:
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13:26 Dan_: IRC 20111018.txt:
13:26 Dan_: 14:50 toastbrot: hey guys. im new to this. i installed drracket a couple hours ago. im runnin ubuntu 11.10 with gnome 3. if i start ddracket im gettin a wrong GUI in drracket. the console says "Gdk: IA__gdk_window_thaw_updates: assertion `impl_window->update_freeze_count > 0' failed 14:50 toastbrot: ". i made a screenshot, so you can see what i mean. http://img843.imageshack.us/img843/7963/bildschirmfotoam2011101c.png any ideas? 14:52 t
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14:51 vyz: if they made a movie of my life, it would be called Please Wait: The Musical: The Movie
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17:18 dented42: I'm playing with scribbles literate programming module, why can I not typeset my literate document directly with scribble, why do I need to use the (lp-include …) form into a different document and typeset that?
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18:00 dented42: and why do 'chunks' in the literate programming language use brackets instead of braces? they are harder to type in DrRacket due to the overloading of the bracket keys, as well as seeming to be quite inconsistant. I'm curious as to what the reasoning behind this decision is.
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18:39 dented42: oh, right. that's the syntax for at-expressions
18:39 dented42 is a silly
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19:56 vyz: this sounds dumb, but is there any way to have a repl in a terminal, outside of drracket? is there some flag I can pass when executing a .rkt to let me interact with it?
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20:01 bremner: vyz: http://docs.racket-lang.org/xrepl/index.html?q=xrepl
20:03 vyz: ok awesome
20:04 vyz: thanks bremner
20:04 vyz: i realized that par matching and a repl was all I really wanted
20:04 vyz: and dr's ram habits have been irking me for quite some time
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22:09 Sgeo: Ok, I think custodians are pretty cool
22:09 Sgeo: (Reading through the Systems Programming thing)
22:10 Sgeo: "If the current custodian is shut down before a procedure is called to create a managed resource (e.g., open-input-port, thread), the exn:fail:contract exception is raised."
22:10 Sgeo: That makes no sense
22:10 Sgeo: What's wrong with closing an empty custodian?
22:11 Sgeo: Suppose I open a custodian to manage 0 or more resources?
22:11 Sgeo: Depending on runtime stuff?
22:12 Sgeo: Also, can I hook my own sort of values into custodians
22:12 Sgeo: ?
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