Re: [racket-dev] Need a clarification on the implementation of stream-map
On Jul 8, 2012, at 7:25 AM, Daniel King wrote: (define (stream-map f s) (unless (procedure? f) (raise-argument-error 'stream-map procedure? f)) (unless (stream? s) (raise-argument-error 'stream-map stream? s)) On a related note, the above kind of checks should really become real contracts. -- Matthias (let loop ([s s]) (cond [(stream-empty? s) empty-stream] [else (stream-cons (call-with-values (lambda () (stream-first s)) f) (loop (stream-rest s)))]))) _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] Custom write that pretty-prints and works well with quote?
Yes! And `make-tentative-pretty-print-output-port' is helpful mostly because grepping for it in the source led me to racket/set.rkt, which is like an extended example. Thanks! Neil ⊥ On 07/08/2012 09:17 AM, Matthew Flatt wrote: Do `prop:custom-print-quotable' and/or `make-tentative-pretty-print-output-port' from `racket/pretty' help? At Sat, 07 Jul 2012 11:40:49 -0700, Neil Toronto wrote: I've got an array structure like so: (struct: (A) strict-array ([shape : (Listof Index)] [data : (Vectorof A)]) Say I have this value: (strict-array '(2 2) #(1 2 3 4)) I want it to print like this at the REPL: #strict-array '(2 2) '[[1 2] [3 4]] If there's not enough room, I want this: #strict-array '(2 2) '((1 2) (3 4)) If it happens to be in a list, I want this: (list #strict-array '(2 2) '[[1 2] [3 4]]) and definitely NOT '(#strict-array '(2 2) '[[1 2] [3 4]]) because the inner quotes are confusing. How do I do that with prop:custom-write? The only way I've found so far to get nicely formatted output is to write/display/print a list, but then the quotes get messed up. I haven't found a way to keep the REPL from quoting lists of structs, except to go with the default printer, which flattens arrays, which makes them hard to read. This is frustrating. Neil ⊥ _ Racket Developers list: http://lists.racket-lang.org/dev _ Racket Developers list: http://lists.racket-lang.org/dev
[racket-dev] Release for v5.3 is about to begin
The release process for v5.3 will begin in about a week. If you have any new features that you want in and are relatively close to being done, now is a good time to do that. -- Ryan _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] [racket] Insert Pict Box menu item not found in DrRacket
On 2012-07-08 15:47:27 +0800, Grecks Grecks wrote: Hi, I post an issue on github 2 month before. [1]https://github.com/plt/racket/issues/101 For devs: while fixing this, I noticed that the code that used to implement this menu item is still around (along with string constants) but are unused. Should I remove that code while I'm at it? Cheers, Asumu _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] Release for v5.3 is about to begin
I suppose this means it's a bad time for the initial commits for the `math' library. :D I'd like to make `math/array' accessible to Jens Axel so he can start on the linear algebra parts. What are my options? Neil ⊥ On 07/09/2012 01:24 PM, Ryan Culpepper wrote: The release process for v5.3 will begin in about a week. If you have any new features that you want in and are relatively close to being done, now is a good time to do that. -- Ryan _ Racket Developers list: http://lists.racket-lang.org/dev _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] Release for v5.3 is about to begin
30 minutes ago, Neil Toronto wrote: I suppose this means it's a bad time for the initial commits for the `math' library. :D As long as it's new code, there's no problem. -- ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: http://barzilay.org/ Maze is Life! _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] Release for v5.3 is about to begin
On 07/09/2012 06:48 PM, Eli Barzilay wrote: 30 minutes ago, Neil Toronto wrote: I suppose this means it's a bad time for the initial commits for the `math' library. :D As long as it's new code, there's no problem. It's unfinished and undocumented, and lacks serious testing. I'd rather it not get into the release in that state. Is that not a problem? Neil ⊥ _ Racket Developers list: http://lists.racket-lang.org/dev
Re: [racket-dev] Release for v5.3 is about to begin
On 07/09/2012 06:54 PM, Eli Barzilay wrote: [But if your main concern is sharing work, then you can just as well go with a GH fork, and either make a nice single commit when it's ready, or push your commits in a single batch.] Ha! Thanks for reminding me that I DO have a git server out there somewhere. Forking and cloning now... Neil ⊥ _ Racket Developers list: http://lists.racket-lang.org/dev
