[racket-users] How to recover whitespace from syntax->string

Racket users, I’m trying to read a scheme file, decorate a bit of window dressing around the edges, and write the expressions to a new file.  I’ve got the basic mechanism working with (read . . .) and (pretty-write . . .), but of course that doesn’t preserve linebreaks.  So now I’m trying to

Re: [racket-users] Version metadata on Racket packages

That answers my question.  Thank you. Jeff On 4/8/21 6:07 PM, Sam Tobin-Hochstadt wrote: No, pkgs.racket-lang.org doesn't keep track of old checksums (or other old metadata) for packages. If you want that information (or in fact the actual copies of old packag

Re: [racket-users] Version metadata on Racket packages

Sam, Thanks for the help. Could it be that the package service is actually deleting old versions of packages when new ones are uploaded? The package service doesn't host any packages at all; just the metadata about them and pointers to where they are stored. This is an interesting answer, b

[racket-users] Re: Judgement not holding

It’s difficult without seeing the definitions, but here are a few general comments: 1. Cases in judgment forms are not run in order. If multiple cases match, they’ll all hold. For example, in this case, if (anotin ((a -> b ...)) a #t) holds, (anotin ((a_0 -> b ...)) a #f) will also hold. 2. If

Re: [racket-users] Re: Polished 3D package for some simulations

On Thu, Apr 08, 2021 at 11:22:10AM -0700, kamist...@gmail.com wrote: > Have you tried out Pict3D [1]? Two significant flaws with Pict3D: * It does not have a mechanism for attaching a texture to an object. * It does not allow one to cut one #D object out of another. (such as using a cylinder t

[racket-users] Re: Polished 3D package for some simulations

Have you tried out Pict3D [1]? There is also a library from Matthew Flatt that can create 3D Text / extruded pathes: [2] Personally I currently use opengl [3], these bindings support higher opengl versions than the [4] (which only support opengl 1.5 according to its documentation) I can't say e

Re: [racket-users] the effect of redacted information in multiple party conflict

hello friends, let me share that exercise 1 is up here, i would like to kindly share it with you, as a commitment to keep me working on game theory and racket and java, and python etc https://github.com/ayaderaghul/game-n-code/blob/main/README.md On Tue, 30 Mar 2021 at 08:23, Nguyen Linh Chi wro