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04:28 wwwd: Are my posts reaching the channel?
04:29 bremner_: yes
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04:32 wwwd: Is there a place that I should be going to ask for help? Because so far your the first person who has acknowledged anything I have posted. Is this the wrong forum to ask questions?
04:38 bremner_: wwwd: it's just a small channel and you need to be patient if you want to get help here. You are certainly welcome to use the mailing list.  It would also help if you pasted the code in question to some pastebin site.
04:40 wwwd: What is and how would I get code to a pastebin site?
04:42 bremner_: hmm, normally I would recommend paste.lisp.org, but it seems to be down. Try gist.github.com
04:43 bremner_: it is pretty self-explanatory once you point your browser at it
04:44 wwwd: bremner_ : do I then add a message here with a link?
04:45 bremner_: yes
04:46 wwwd: bremner_: Thanks!
04:46 bremner_: welcome
04:53 wwwd: So when I run the code at https://gist.github.com/6c3a73d0263172a1189b it creates a circle. Moves it once. Then thows the following error: "circle-center: expects argument of type <struct:circle>; given true" with reference to line 14. Is there a problem in my draw-a-circle funtion or am I calling it incorectly?
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04:58 wwwd: By the way this is from the text "How to Design Programs exercise 6.6.6 at: http://htdp.org/2003-09-26/Book/curriculum-Z-H-9.html
05:00 bremner_: move-circle works ok if you call it interactively?
05:02 bremner_: btw is that exactly your code, because the template part does not compile.
05:02 wwwd: Seems to.
05:03 bremner_: oh, what is that #lang line ?
05:04 wwwd: By tempate you mean fun-for-circles lines 6 - 9? And by the way I don't have one!
05:04 bremner_: wwwd: right, that is what I mean.
05:05 wwwd: When I past that into a new tab by it's self and run it I don't get any errors
05:06 bremner_: what is that language selection in drracket then, in the bottom left
05:06 wwwd: beginning student
05:07 wwwd: b.s custom that is
05:08 wwwd: When you say it doesn't compile; am I correct in thinking I am compiling it when I run it?
05:09 (part) sstrickl
05:10 bremner_: right, just pressing the run button
05:10 wwwd: Yeah! Work on my system.
05:14 bremner_: so the code you pasted is ok for you now?
05:15 wwwd: Yes. But the whole still has error. Also, lines 51-63 don't make sense to me.
05:16 wwwd: In define move-circle I am calling 2 args. In my call I am only calling 1 arg. Or is the next move-circle line an arg?
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05:19 wwwd: bremner_: Sorry. Miss understood. No the code I pasted still gives the same error. But the template seems to work on my system.
05:19 wwwd: i.e. it is not throwing any errors...
05:20 bremner_: wwwd: the return of the inner move-circle is passed to the next outermost move-circle
05:20 bremner_: (f (f (f 1)))  is a similar example
05:21 bremner_: given e.g. (define (f x) (+ x 1))
05:23 wwwd: To be clear line 63 runs and passes to line 62 then line 61...?
05:23 bremner_: /url 126
05:23 bremner_: oops
05:23 bremner_: wwwd: yes, that sounds right
05:27 wwwd: So the first move-circle is calling draw-and-clear-circle at line 45 which then calls draw-a-circle line 12 with a true instead of a <struct>. Causing the error?
05:32 wwwd: Actually, move-circle returns a true which I expected. However, I did not expect it to cause a problem. Am I suposed to be passing my circle stuct differently?
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06:12 bremner_: ah, move-circle should return a circle
06:12 bremner_: wwwd: ^
06:18 wwwd: In fact should'nt it be a circle with posn-x + delta
06:20 bremner_: well, that's just a new circle isn't it?
06:23 wwwd: Yes, or atlest one would hope! Though it seems to be more like a true!
06:27 bremner_: sorry, I should have been more explicit when I asked about move-circle before. That is what I meant to suggest, make sure it returns a circle.
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06:45 wwwd: bremner_: in line 34 should my make-posn be: (draw-circle (make-posn (posn-x (+ (circle-center a-circle) delta)))
06:53 wwwd: bremner_: Thanks alot!!! I'll go back and see if I can figure out how to return a circle rather than a true.
06:54 wwwd: bremner_: ^
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11:20 rogd: is there any way to save variables to a file?
11:21 rogd: write doesn't work since it just writes
11:26 offby1: I'd use write ... what's wrong with it?
11:26 offby1: rogd: show us some code that doesn't work; explain what you'd wanted it to do
11:27 bremner_: you can use http://docs.racket-lang.org/reference/serialization.html?q=serialize#(def._((lib._racket/private/serialize..rkt)._serialize))  if you want something fancy
11:27 offby1: yeah
11:28 bremner_: haven't used it myself
11:29 offby1: I have; I think it's roughly equivalent to Python's "pickle" and Perl's "data::dumper"
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11:36 rogd: (define skapa-spelare%   (class object%     (super-new)          (init (kord-init #f))     (init (plats-init #f)) .........)
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11:37 rogd: (define spelare (new skapa-spelare% ........))
11:37 rogd: and I'm trying to make a save function which will save the player (spelaren)
11:38 rogd: it's a game for a school project btw
11:39 offby1: probably need that serialization library
11:39 offby1: if you (write spelaren) you'll probably just get something like #<skapa-spelare%>
11:40 rogd: yes i tried that
11:40 rogd: tooke me some time to figure it out :/
11:40 offby1: unfortunately only fairly simple values are "write"able.
11:40 offby1: And using the serialization library forces subtly annoying constraints on your code, although I forget what they are.
11:41 offby1: I suspect most people in your situation would write out simple data, and then write a function that creates a new skapa-spelare% from that data
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11:42 rogd: I thought of that but there are alot of fields sadly
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11:44 offby1: welcome to the real world
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11:44 offby1: well, try that serialization library; maybe it'll work nicely
11:45 rogd: ok i'll try that
11:45 rogd: thanks for the help
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12:10 PLT_Notify: racket: master Jay McCarthy * e8d3ce3 (0 files in 0 dirs): Initial bibtex fakery
12:10 PLT_Notify: racket: master Jay McCarthy * 5fd6f06 (1 files in 1 dirs): Worked too long on this today
12:10 PLT_Notify: racket: master Jay McCarthy * eb55bc9 (1 files in 1 dirs): Progress
12:10 PLT_Notify: racket: master Jay McCarthy * 996a036 (1 files in 1 dirs): Parsing
12:10 PLT_Notify: racket: master Jay McCarthy * 12f5994 (1 files in 1 dirs): Parsing
12:11 PLT_Notify: racket: master Jay McCarthy * dc639df (1 files in 1 dirs): Parsing
12:11 PLT_Notify: racket: master Jay McCarthy * 0332a09 (1 files in 1 dirs): First pass
12:11 PLT_Notify: racket: master Jay McCarthy * 291ee08 (2 files in 2 dirs): Adding scriblib/bibtex.
12:11 PLT_Notify: racket: master commits 040bd37...291ee08 - http://bit.ly/lZBtC7
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12:59 rogd: anyone who is good at Serialization?
13:00 rogd: I need to Serializi a class object
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14:11 offby1: post yer code
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14:49 ohwow: Is there an abstract interface for working with dictionaries (alists, hashes, etc)? I swear I saw it on docks.racket-lang.org but now I can't find it
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15:15 offby1: yeah, it's functions whose names begin with "dict"
15:16 offby1: http://docs.racket-lang.org/reference/dicts.html
15:18 ohwow: ah, i was searching in reference
15:18 ohwow: in guide*
15:18 ohwow: thatnks a lot
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16:02 ohwow: https://github.com/plt/racket/blob/master/collects/racket/dict.rkt hm, I fail to see how (dict?) is implemented
16:02 ohwow: I am curious, how do you check if an object is alist?
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16:03 ohwow: ah nevermind
16:03 ohwow: it's in private/dick
16:03 ohwow: dict*
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17:49 RPR`: Is it possible to delete a package on Planet.  Put the wrong file up there in error.  Sort of assumed there would be some sort of "release" button or step to the process after one fixed up the metadata etc...
17:49 offby1: dunno
17:50 jonrafkind: i don think so, but you can upload a new version
17:50 jonrafkind: if you really want to delete a package send an email to robby maybe
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17:51 RPR`: I was thinking about the upload an "empty" version.  Sort of embarassing.
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19:05 RPR`: If you don't select any of the 3.xx or 4.xx checkboxes, it disappears. (The Planet package).
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21:44 (topic) -: Racket -- http://racket-lang.org -- Come to Racket Days: July 23-24 -- logs @ http://racket-lang.org/irc-logs
21:44 (names) -: gabot dnolen ckrailo asumu tauntaun RPR` jonrafkind realitygrill mithos28 rekahsoft Checkie ZachBeta bremner_ lisppaste bmp shofetim DT`` vu3rdd Quetzalcoatl_ Nightwolf tonyg samth tewk petey-away Demosthenes poindont` eli rudybot ohwow_ cky danking offby1 evhan Eren ohwow sethalves drewr _p4bl0 hyko elliottcable tomku YokYok fmu blomqvist em janne Tene askhader clklein shachaf mario-goulart ve friscosam zakwilson @ChanServ stamourv mattmight
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