Re: [racket] Questions about the Canvas

2012-06-13 Thread Hillary Ryan
Thank you very much. That clears everything right up. -Hillary On Wed, Jun 13, 2012 at 4:11 PM, Stephen Bloch wrote: > > On Jun 13, 2012, at 3:16 PM, Hillary Ryan wrote: > > > Why does this work? > > (define canvas (new canvas% [parent window] [paint-callback (lambda >

[racket] Questions about the Canvas

2012-06-13 Thread Hillary Ryan
Hello, I have been working on a racket GUI recently. So far it's been wonderfully smooth sailing, especially compared to Java. I had a couple of questions about the canvas object. Any help would be wonderful. Many Thanks, Hillary Questions: 1) Why does this work? (define canvas (new canvas% [par

[racket] Class Philosophy and Fields

2012-06-12 Thread Hillary Ryan
rg/reference/generic-numbers.html#(def._((quote._~23~25kernel)._*))> interest balance) How do these approaches differ? And when should I use one over the other? Many Thanks, Hillary Ryan Racket Users list: http://lists.racket-lang.org/users