Hi!
I'm learning Racket and I stumpbled into a couple of problems with macros.
I tried to make macros that implements recursive lambda, but not the classic
one (that uses letre), but the one that uses Y combinator.
So it should work like this:
(recursion fact (n)
(if (zero? n)
On Saturday, September 10, 2016 at 5:45:43 AM UTC-7, Matthew Flatt wrote:
> I think that means information about the source stream's alpha channel
> really is not available through the current interface. A pull request
> to add that would be welcome.
I've been looking through bitmap%'s definition
> On Sep 8, 2016, at 4:36 PM, Alexis King wrote:
>
> Alright, I’m finally taking a look at this (and looping the users
> list back in). I think, unfortunately, your (Alex’s) change isn’t
> quite sufficient: having access to the get-info function isn’t
> enough. The read and read-syntax functions
At Sat, 10 Sep 2016 01:10:53 -0700 (PDT), Lehi Toskin wrote:
> On Friday, September 9, 2016 at 7:45:32 PM UTC-7, Matthew Flatt wrote:
> > You could use 'unknown/mask, which should create a mask bitmap only if
> > the source stream has an alpha channel, but at the expense of parsing
> > the file an
On Friday, September 9, 2016 at 7:45:32 PM UTC-7, Matthew Flatt wrote:
> You could use 'unknown/mask, which should create a mask bitmap only if
> the source stream has an alpha channel, but at the expense of parsing
> the file an extra time.
Running `(read-bitmap img 'unknown/mask)` produces a bit
5 matches
Mail list logo
