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03:00 racket: [racket] plt pushed 3 new commits to master: http://bit.ly/ltG2Kf
03:00 racket: [racket/master] Finish converting `scheme' -> `racket'. - Eli Barzilay
03:00 racket: [racket/master] A long overdue scan to eliminate files without terminating newlines. - Eli Barzilay
03:00 racket: [racket/master] Get rid of "defaultly"s. - Eli Barzilay
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03:07 racket: [racket] plt pushed 1 new commit to master: http://bit.ly/lfh5c3
03:07 racket: [racket/master] Fix some xv-induced binary junk. - Eli Barzilay
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04:26 void-: Hi, i'm trying to output raw bytes from racket but they seems to be unicode prefixed. Do I need to set locale or do something special with my port? I'm using write-byte
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04:35 Mordae: Hi.
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10:42 racket: [racket] plt pushed 2 new commits to master: http://bit.ly/jPV3Xo
10:42 racket: [racket/master] Fixing example from Naurin Zamir - Jay McCarthy
10:42 racket: [racket/master] Adding initial value to textarea-input - Jay McCarthy
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11:15 samth: void-: i don't think write-byte should be affected by the encoding
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11:26 tauntaun: Scribble's @racket[] command isn't generating hyperlinks to functions that I'm documenting by defproc.  I'm guessing this is because my functions are (obviously) not part of Racket.  But is there some other way to do this cross-referencing?
11:30 samth: are your requring your module `for-label'?
11:30 samth: where are you locating/building your documentation?
11:34 tauntaun: My module does require racket 'for-label' (if that's what you mean), and it's being built far away from the racket directory.
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11:46 samth: tauntaun: you need to require the file you are documenting `for-label'
11:47 samth: or rather, the file you want to have hyperlinks to
11:48 tauntaun: OK.  But how should I let Scribble know where that file is?  (I'm putting my scrbl's in a separate doc dir than my src.)
11:49 tauntaun: (sorry samth, I keep forgetting to invoke your handle.)
11:50 samth: if you're creating a collection, you'll need an info.rkt file
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12:31 tauntaun: samth: You asked yesterday for ideas on how to add advice to contract documentation.  I just had a chat with eli, who IIUC suggested favoring contracts at the module level (provide/contract) to those at function level (define/contract).
12:31 tauntaun: This advice would not have occurred to me as a novice...
12:31 tauntaun: and is semi-obvious only in hindsight.
12:31 tauntaun: So PLT might consider adding such a note to the docs.
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12:45 jonrafkind: i mainly use define/contract
12:45 jonrafkind: doesn't provide/contract assume the contracts only matter for users of a module
12:45 jonrafkind: and then code within the module is already perfect?
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13:21 samth: jonrafkind: i wouldn't phrase it that way
13:22 samth: it uses the contract to protect the module from other modules
13:22 jonrafkind: so replace 'users' with 'modules' ?
13:24 samth: that's not my point
13:25 samth: the idea of contracts is that they live on a boundary between two communicating parties
13:25 samth: if the relevant parties in your system are modules, then use provide contracts
13:25 samth: there's no "perfect" or "matter" here
13:26 jonrafkind: but if you define a function with define/contract and provide it the the contract applies both inside the module and outside, right?
13:27 samth: yes, the contract is between the definition and its context
13:28 jonrafkind: so using provide/contract only protects code from outside the module, leaving the module itself unprotected
13:28 jonrafkind: im just saying i prefer to protect all parties involved
13:28 samth: both parties are protected in both cases -- the question is who the parties *are*
13:28 jonrafkind: you lost me
13:29 jonrafkind: inside module A: (define/contract foo ...) (foo) ;; the usage of foo is protected in module A
13:29 samth: with `provide/contract' there are two parties -- the module doing the providing, and the module doing the requiring
13:29 samth: with `define/contract' there are two parties -- the definition, and the context
13:29 samth: there are always two parties
13:31 tauntaun: FWIW, eli's point was that favoring provide/contract over define/contract strikes a good compromise as to runtime cost.
13:31 jonrafkind: module A: (provide foo) (define/contract foo ...) ;; module B: (require 'a) (foo) ;; now A's foo is protected within B
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13:31 jonrafkind: but in module A `foo' is protected within A itself
13:32 jonrafkind: but if you do module A: (provide/contract foo ...) (define foo ...) now usages of foo within A are not protected
13:32 samth: tauntaun: if you make the parties more fine-grained, then there are more boundary crossings, and thus more contract checks
13:32 samth: jonrafkind: yes, because in the second case the whole of module A is the party to the contract
13:33 jonrafkind: ok so thats my point, in one case only code outside modules are protected, in another case all code is protected
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13:34 samth: in all cases, code outside the boundary is treated differently than code inside the boundary
13:34 jonrafkind: yes, so what?
13:35 samth: so, `provide/contract' and `define/contract' are different choices of boundaries
13:35 jonrafkind: yes, im glad we agree
13:35 samth: there's nothing about "perfect" or when contracts "matter"
13:35 jonrafkind: todays pointless argument brought to you by the letter "R"
13:36 jonrafkind: if the boundary is on the module then code within the module won't use the contract and its assumed the code within the module will use the function properly
13:36 jonrafkind: so if you can't make such an assumption (because of mistakes) its nice to put the boundary on the function itself
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16:00 David: Hello, I am trying to output xml rss feed form a link,  with dr racket, can you help me please? Can I do that with dr racket? Thank you
16:00 David: I mean, to create a simple webpage, that shows news from two rss feed sources using dr racket
16:01 askhader: David: There are racket libraries to help you do this
16:02 askhader: Can you show us what you have so far?
16:02 David: I have nothing, I am planing to start right now, but I dont know if racket parse RSS
16:03 David: is there any example how can i do it, since I am new to racket
16:04 askhader: I can't find any.
16:04 askhader: But you can certainly implement it yourself =)
16:04 David: which library shoud i use?
16:05 _p4bl0: David: http://docs.racket-lang.org/ before asking question :-)
16:05 _p4bl0: http://docs.racket-lang.org/xml/index.html
16:05 _p4bl0: also
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16:21 tauntaun: There don't seem to be type predicates like "setof" or "pairof", in analogy with "listof", for use in Scribble and elsewhere.  Are those hiding anywhere?
16:23 stamourv: There's set/c and cons/c.
16:24 stamourv: Te reason both list/c and listof exist is that listof is for lists of any number of elements that all respect a given contract, whereas list/c is for heterogenous lists of fixed length.
16:25 stamourv: s/Te/The/
16:28 tauntaun: Great, thanks.
16:30 (quit) David: Quit: Page closed
16:32 stamourv: mithos28: I'm looking at your new pull request.
16:33 stamourv: In collects/tests/typed-scheme/succeed/require-struct.rkt, why are some lines commented out?
16:35 stamourv: Also, #:extra-constructor-name is a bit verbose. Maybe #:extra-constructor?
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16:37 carleastlund: stamourv, #:extra-constructor-name is from struct
16:38 stamourv: carleastlund: Oops, missed that.
16:38 stamourv: Nevermind then.
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17:40 ehine1: Is there a way to choose a default folder for all saved files in Racket?
17:41 jonrafkind: you mean in drracket?
17:41 ehine1: yes
17:42 jonrafkind: hm, im not sure..
17:42 ehine1: okay
17:43 jonrafkind: can you make a bug report about it?
17:44 ehine1: haha probably not, I don't know much about racket/drracket.
17:45 jonrafkind: there should be a button inside drracket
17:45 jonrafkind: tools -> report bug i think
17:45 ehine1: alright
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18:17 racket: [racket] plt pushed 1 new commit to master: http://bit.ly/jL6jln
18:17 racket: [racket/master] Add `block' to `scribble/text', to explicitly ask for an indentation block. - Eli Barzilay
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19:07 ApeShot: So I've noticed that under gnome on ubuntu, the latest racket does not handle disabling smoothing in device contexts properly.
19:07 ApeShot: That is, I can't disable smoothing.
19:08 ApeShot: The method `set-smoothing` has no effect on whether subsequent blits are smoother or not.
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19:20 jonrafkind: can you ask on the mailing list?
19:20 ApeShot: Of course.  I've been trying to look at the source, but I can't find where the device context interface is defined.
19:20 ApeShot: Never delved into the racket source before.
19:20 ApeShot: It is true of both bitmap and canvas device contexts
19:28 yoklov1: i've looked before
19:28 yoklov1: at those
19:28 yoklov1: iirc they're all just cairo at the bottom
19:28 yoklov1: i'll see if i can find you a path for them
19:29 ApeShot: Thanks
19:29 ApeShot: I'm pretty sure I'm doing this correctly.  I set the smoothing to 'unsmoothed, set the scale to some factor, and then blit a bitmap.  The bitmap shows up scaled by the appropriate factor, but smoothed
19:29 yoklov1: so you are looking for bitmap-dc and
19:29 ApeShot: dc and bitmap-dc
19:30 yoklov1: right
19:30 yoklov1: yeah
19:30 yoklov1: oka
19:30 yoklov1: collects/racket/draw/private
19:30 yoklov1: they're in there
19:31 ApeShot: Awesome, thanks
19:31 ApeShot: I'm sending a mailing list post now
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19:31 ApeShot: I'll paste in the code that causes the problem
19:40 ApeShot: Well, nothing leaps out at me.  It seems like the smoothing slot is being set correctly (it defaults to 'unsmoothed anyway)
19:41 ApeShot: So the problem may be in the calls out to cairo
19:45 jonrafkind: that code isn't ultra mature so probably you're right
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19:51 ApeShot: But they look superficially correct
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19:54 ApeShot: Does racket bundle its own cairo or is it using my version?
19:54 ApeShot: That could be the problem
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20:08 racket: [racket] plt pushed 1 new commit to master: http://bit.ly/iXZIT4
20:08 racket: [racket/master] set the current directory based on the tab's get-directory before starting the stepper. - John Clements
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