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<alittlebrighter> new to racket, I'm writing a simple tictactoe game and I'm not sure how best to write a function that will return say "x" on first invocation then "o" then "x"...
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<newbie_> hi all, I am trying to get little doll walk in the maze and she could find the right way to find the exit of the maze but im stuck. https://paste.pound-python.org/show/sZGx51EF4jQHOyBGANbV/ . Can someone help me where im going wrong
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<mrm> newbie_: Well, for one thing, what's with all the '.)'?
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<Nikon> yo is anyone around?
<Nikon> bremner sorry to ping you, but this gives me an error of define: expected only one expression for the function body, but found two extra parts http://pasterack.org/pastes/47002
<Nikon> can you take a look at it?
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<Nikon> oh sorry meant to say, i'll check the logs if anyone responds even tho i'm not here, thanks!
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<bor0> anything built in that I can use to set a range of values in a list? e.g. (set-vals 0 3 123 '(1 2 3 4 5)) ==> '(123 123 123 4 5)
<bor0> maybe vectors :)
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<J_Arcane> Do we have a wee Racket icon somewhere in AVG path format?
<J_Arcane> *SVG
<J_Arcane> Gonna start a PR to add it to howoldisit, but it'd be nice to have an icon for it.
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<J_Arcane> Also, when would you consider the "release date" of Racket to be? the original PLT Scheme/DrScheme release, or 5.0 when the Racket name was adopted?
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<J_Arcane> I notice the site no longer seems to host builds prior to 5.0.
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<samth> J_Arcane: the older builds are on plt-scheme.org
<samth> and I think the "original" release is the one in 1995
<J_Arcane> samth: ahhh, right, now I remember.
<samth> there should be an SVG somewhere
<J_Arcane> I went digging there way back because I wanted a scheme that'd run on Classic Mac OS
<J_Arcane> samth: thanks. You wouldn't know the exact day of the 1995 release would you? been struggling to find a release date
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<Nikon> aww poo nobody responded :(
<samth> Nikon: you need to put things in the body of the local
<samth> also you need to use lowercase letters
<Nikon> for the definition of T?
<Nikon> also as in like, (local [defs.....] body)
<Nikon> if so isnt (T (represent 0) 0))) in the body?
<samth> Nikon: no, that isn't what you wrote
<samth> I think this is close to what you want: http://pasterack.org/pastes/55765
<samth> but you still have something confused about `if`
<Nikon> which if is wrong? sorry, i'm used to C heh...
<Nikon> too many brackets
<samth> there's no `else` in `if`
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<Nikon> man... should change the name to drbracket
<samth> if is `(if test e1 e2)`
<Nikon> yeah, but in the language i use we have else statements
<Nikon> https://docs.racket-lang.org/csc104/index.html?q=if#%28form._%28%28lib._csc104%2F2018-fall..rkt%29._if%29%29
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<Nikon> OHHHHHHHHHHHHHHHHHHHHHHHHHH i get you now
<Nikon> thank you!
<Nikon> is there any reason my define's in the [] show up as red?
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<samth> I don't see any red
<samth> what do you mean?
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<gnugnugnu> hi! Large question: What make two Racket libraries incompatible?
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<samth> Nikon: that highlighting is showing parenthesis nesting
<samth> gnugnugnu: what do you mean?
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<sleepnap> does `raco setup` install external libraries from PLaneT, or is that the exclusive domain of `raco pkg`?
<sleepnap> that is, the deps listed in an info.rkt
<samth> sleepnap: `raco setup` won't install dependencies automatically
<samth> sleepnap: (note that info.rkt and raco pkg aren't about PLaneT, which is the name of an older and now-deprecated package system)
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<hjek> Hi... I'd like to use Racklog ( https://docs.racket-lang.org/racklog ) for an app, and I need persistent data storage, which the Racklog docs don't really cover. Apparently facts in Racklog are not serializable (using racket/serialize), but I guess I could just store facts as lists. But, then I need to load those lists back into facts somehow, e.g. using %assert, but I can't really figure out how to pass a list to %assert. I guess I mig
<hjek> ht have to define a macro to do that? Or am I going about this in an over-complicated way?
<hjek> Really, it's an open question here: How to store (and load) Racklog facts?
<hjek> ah, ok, never mind. it is actually easy to store them as list and use pattern matching to pass them to %assert.
<rain2> what about making a racklog source code fiel
<hjek> rain2: how?
<rain2> file
<hjek> oh
<rain2> just print out the facts as source code
<hjek> good idea
<hjek> makes sense. i was just watching this rich hickey talk "the value of values"
<hjek> that you shouldn't overwrite values
<hjek> and racklog fits that idea well. makes sense to just eval a racklog source file.
<lexi-lambda> hjek: Could you use datalog instead?
<lexi-lambda> hjek: datalog has write-theory and read-theory for serialization.
<hjek> lexi-lambda: possibly. i just don't know enough about how the various DSLs interact with plain racket
<hjek> interesting.
<lexi-lambda> datalog is significantly more restrictive (which is essentially what makes it serializable).
<lexi-lambda> racklog is code.
<hjek> I guess there's an interop example here: https://docs.racket-lang.org/datalog/interop.html
<hjek> got any good links about datalog serialization?
<hjek> so, datalog is not code as such?
<hjek> wow, ok, that link there. I see `write-theory` and `read-theory`
<hjek> is that essentially serializing a set of facts?
<lexi-lambda> Yes.
<hjek> niiiiiiice
<hjek> way less hacky
<hjek> the parenthesised datalog syntax also looks more similar to prolog, so a bit easier to understand for me.
<hjek> thanks
<sleepnap> samth: thanks!
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<newbie_> hi , can someone help me with my fu ntion as my tests seems to fail giving reference to path not defined, not sure how to fix it. https://paste.pound-python.org/show/vj1rFj1H4ag3wFWoZtK0/
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NB0X-Matt-CA is now known as nonlinear
<newbie_> hi , can someone help me with my fu ntion as my tests seems to fail giving reference to path not defined, not sure how to fix it. https://paste.pound-python.org/show/vj1rFj1H4ag3wFWoZtK0/
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<rain2> newbie_: it says xs->image: unbound identifier in: xs->image
<rain2> when i try to run it
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<newbie_> rain2 did you install the dependency?
<rain2> no, sorry i didnt know about any dependency
<rain2> i dont really unerstand the code so i cant help
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