Re: [racket-users] provide/contract with an id that doubles as a match expander

On Thu, Jun 9, 2016 at 2:24 PM, Alex Knauth wrote: > > > There's `define-module-boundary-contract`, which does something similar to > `define/contract` except that it uses the module as a boundary instead of > creating it's own: > >

Re: [racket-users] provide/contract with an id that doubles as a match expander

> On Jun 9, 2016, at 1:48 PM, Jon Zeppieri wrote: > > I think I've asked a question like this in the past, but I still haven't > found a good solution. I'm going to give a concrete example: > > Let's say I have a `date` struct like this: > > (struct date (y m d)) > > >

[racket-users] provide/contract with an id that doubles as a match expander

I think I've asked a question like this in the past, but I still haven't found a good solution. I'm going to give a concrete example: Let's say I have a `date` struct like this: (struct date (y m d)) And I'm perfectly happy with the default match expander: (match d [(date y m d) ...]) But

Re: [racket-users] R7RS implementation

Hey, I’m the maintainer of the R7RS library. I’d appreciate it if you filed those issues as bugs on the GitHub repository here: https://github.com/lexi-lambda/racket-r7rs I’m glad you found value in the library, and I’d love to try and fix some of the problems you mentioned, especially since a

[racket-users] R7RS implementation

Dear Racket developers and users, I've just tried the non-official implementation of R7RS in Racket. Three points: - if you define a library, you can write something like: (define-library (something) (export ...) (import ...) (define another-thing ...) (define year-another

Re: [racket-users] Detecting mouse events on top of picts?

On 6/8/2016 10:26 PM, David Christiansen wrote: What I mean is that I'm using draw-pict to cause the contents of a pict to be drawn on a dc<%> that I get from a bitmap%. The bitmap is initialized empty and transparent, and then the pict is drawn to it. I can tell which pixels are affected by