00:00 offby1: I suspect I already know why
00:03 offby1: This is why I wound up passing the object to each lambda, rather than having them all refer to "slots"
00:04 offby1: I think what's going on is: you hash-copy the hash ... but all the functions are still referring to the old hash
00:05 offby1: the "slots" that you define in the 'let' on line 8 goes out of scope at the end of the next line ... and has no effect on anything.
00:06 lewis1711: offby1: but I can add new slots to cloned objects that aren't refleceted in root. if it was still the old copy wouldn't I be adding slots to both?
00:09 offby1: dunno; it makes me dizzy to think about it
00:13 lewis1711: lol
00:15 lewis1711: I'm nearly there anyway.
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01:58 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/oXhQXA
01:58 RacketCommitBot: [racket/master] Fix contract on `set-argb-pixels` - Asumu Takikawa
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10:02 mmajchrzak: Do you know any good examples of racket gui ?  Its quite cool and usefull but I think that documentation isn't so great.
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10:11 jeapostrophe: mmajchrzak: looking in collects/games is a good place to look for short programs
10:11 jeapostrophe: mmajchrzak: obviously there's DrRacket itself
10:11 jeapostrophe: but it's biiiiggg
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10:19 mmajchrzak: i am searching a simple "paint by mouse on canvas " ... i have almost everything but I dont know how to puct pixel on the place where is mouse.
10:21 mmajchrzak: I have ... http://pastebin.com/VDeE9Kvu
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14:58 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/QqoUJw
14:58 RacketCommitBot: [racket/master] ffi/unsafe/com repairs - Matthew Flatt
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20:02 mmajchrzak: i am searching a simple "paint by mouse on canvas " ... i have almost everything but I dont know how to puct pixel on the place where is mouse.
20:02 mmajchrzak: I have ... http://pastebin.com/VDeE9Kvu
20:05 samth: mmajchrzak, you'll probably want to have some private field that you change, and do something in the on-draw callback
20:06 samth: sorry, the `on-paint' method
20:06 mmajchrzak: yes i would like to draw a circle after mouse click
20:07 samth: mmajchrzak, right, to do that, update a private field based on the x/y coordinates
20:07 samth: and then do the painting differently
20:11 mmajchrzak: but i dont know how to do that. Do you have any good examples of how to use gui in rakcet
20:11 mmajchrzak: ?
20:13 samth: mmajchrzak, what kind of guis have you worked with before?
20:14 mmajchrzak: java guis , python tk and a litte bit of qt and thats all
20:15 samth: mmajchrzak, these are all pretty similar to racket's gui library
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20:18 samth: mmajchrzak, here's a revised version of your code to get you started: http://pastebin.com/2jyCkw2E
20:19 mmajchrzak: samth thankyou now i understand
20:19 samth: mmajchrzak, no problem
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23:16 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/7rAJOw
23:16 RacketCommitBot: [racket/master] adjust url-exception so it recognizes the same exceptions it used to - Robby Findler
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