[racket] ANN: 2048 game - Racket edition

On Tue, Apr 22, 2014 at 5:50 PM, Matthias Felleisen
<matthias at ccs.neu.edu> wrote:
>
> On Apr 22, 2014, at 5:42 PM, Daniel Prager <daniel.a.prager at gmail.com> wrote:
>
>> Matthias: Would it make sense to have an option on (big-bang) for it not to redraw if the world hasn't changed?
>
> The world library does this. NO, all the code that did this is commented out. The comment next to it says "Robby optimization" and I totally forgot why it says so. I do recall running into problems with not refreshing the image and that not refreshing was actually not big time saver. Sorry for the double negative.

You appear to have removed this optimization in this commit:
https://github.com/plt/racket/commit/be76ed2adde49ed07453b368bc254c3bce99259d
but without a reason given.

Sam