That was the problem, thanks Robby! I guess ubuntu's apt repo's not up to date or something.
Andrew On Sat, Oct 4, 2014 at 2:38 PM, Robby Findler <ro...@eecs.northwestern.edu> wrote: > Are you sure you have a recent version of racket? I wonder if you're > looking at the docs for the latest release (on docs.racket-lang.org) > but you have an older release where you're trying things out. > > Note that you can look at your local docs and those docs should match > up to your local installation. > > Robby > > > On Sat, Oct 4, 2014 at 2:32 PM, Andrew Ulrich > <andrewsotheracco...@gmail.com> wrote: > > Ok, I'm stuck again: > > I'm trying to use place-image, but it keeps saying > > place-images: unbound identifier in module in: place-images > > > > It doesn't even seem to work with the example code in the docs found at: > > > http://docs.racket-lang.org/teachpack/2htdpimage.html?q=overlay#%28def._%28%28lib._2htdp%2Fimage..rkt%29._place-images%29%29 > > > > Here's what I think the docs say the code is: > > #lang racket > > (require 2htdp/universe) > > (require 2htdp/image) > > (require lang/posn) > > (place-images > > (list (circle 4 "solid" "blue") > > (circle 4 "solid" "white") > > (circle 4 "solid" "white") > > (circle 4 "solid" "white")) > > (list (make-posn 18 20) > > (make-posn 0 6) > > (make-posn 14 2) > > (make-posn 8 14)) > > (rectangle 24 24 "solid" "goldenrod")) > > > > But like I said, I get the error. I'm trying to use place-images to > place a > > bunch of sprite images on a scene for a simple video game. I'm assuming > > place-images the best way to do that. > > > > Thanks in advance for helping me out. I know it's basic stuff. > > > > On Sat, Oct 4, 2014 at 9:04 AM, Andrew Ulrich > > <andrewsotheracco...@gmail.com> wrote: > >> > >> Aha, great! Thanks guys! > >> > >> Andrew > >> > >> On Sat, Oct 4, 2014 at 8:54 AM, Jens Axel Søgaard < > jensa...@soegaard.net> > >> wrote: > >>> > >>> Hi Andrew, > >>> > >>> To add what Matthias say, if you need a "function version" of bitmap, > >>> you can use bitmap/file instead. > >>> > >>> (require 2htdp/image) > >>> (define path-stringy "images/some.png") > >>> (bitmap/file path-stringy) > >>> > >>> Note that I changed (path-stringy) to path-stringy. > >>> > >>> /Jens Axel > >>> > >>> > >>> > >>> > >>> 2014-10-04 15:48 GMT+02:00 Matthias Felleisen <matth...@ccs.neu.edu>: > >>> > > >>> > What you used is called a "computed string" that is, you expect > bitmap > >>> > to evaluate the argument path-stringy to a string. > >>> > > >>> > But, in BSL, bitmap expects to be handed a literal string constant > (or > >>> > a module path): > >>> > > >>> > --------------------------------------------------------------------- > >>> > (require 2htdp/image) > >>> > > >>> > ;; with a module path > >>> > (bitmap 2htdp/planetcute/character-cat-girl.png) > >>> > > >>> > ;; with a fixed string > >>> > (bitmap > >>> > > "plt/pkgs/htdp-pkgs/htdp-lib/2htdp/planetcute/character-cat-girl.png") > >>> > --------------------------------------------------------------------- > >>> > > >>> > Both of these will succeed and retrieve the cat girl from the Planet > >>> > Cute collection that comes with Racket -- Matthias > >>> > > >>> > > >>> > > >>> > > >>> > On Oct 4, 2014, at 9:36 AM, Andrew Ulrich wrote: > >>> > > >>> >> Hi, I've got a really simple problem, I think. Why is it that when > I > >>> >> try to do the following: > >>> >> > >>> >> (require 2htdp/image) > >>> >> (define path-stringy "images/some.png") > >>> >> (bitmap (path-stringy)) > >>> >> > >>> >> I get the following error: > >>> >> bitmap: expected the argument to specify a local path (via a > string) > >>> >> or a module path (e.g. `icons/b-run.png') in: (bitmap > (path-stringy)) > >>> >> > >>> >> I mean, shouldn't path-stringy evaluate to a string before it's > passed > >>> >> into bitmap? If not, then how do I use bitmap for anything dynamic? > >>> >> > >>> >> Thanks, > >>> >> Andrew > >>> >> ____________________ > >>> >> Racket Users list: > >>> >> http://lists.racket-lang.org/users > >>> > > >>> > > >>> > ____________________ > >>> > Racket Users list: > >>> > http://lists.racket-lang.org/users > >>> > >>> > >>> > >>> -- > >>> -- > >>> Jens Axel Søgaard > >> > >> > > > > > > ____________________ > > Racket Users list: > > http://lists.racket-lang.org/users > > >
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