Re: [racket-users] Contracts vs Signatures for HtDP?

2015-11-29 Thread Matthias Felleisen
0. No you’re not missing something. The issue has come up in a recent internal discussion. 1. The intention is that docs are primarily for Racket programmers who wish to use teachpacks in ordinary Racket programs though within reach for beginners (as in, “ignore some of the things you don’t un

Re: [racket-users] [racket] Racket 6.3(.0.7) breaks old code

2015-11-29 Thread Matthew Flatt
My guess is that you're running into an incompatibility created by the new macro system. Something like lifting code out of an expanded `module` form and dropping it into a different one? A change related to submodule expansion? Or something related to the top-level namespace? It might be an unavoi

[racket-users] [racket] Racket 6.3(.0.7) breaks old code

2015-11-29 Thread WarGrey Gyoudmon Ju
It is compiled by myself with no strange options. Rebuilding the project (without DrRacket) fails due to two strange behaviors. The first one is module-path-index-resolve: "self" index has no resolution. It breaks lots of scripts, I cannot locate where it is exactly occurs. 1. errortrace says mak

[racket-users] Re: Paths in Racket

2015-11-29 Thread Jay McCarthy
This section of the tutorial explains how to get more static file paths to be inspected: http://docs.racket-lang.org/continue/index.html#%28part._.Decorating_.With_.Style_%29 Jay On Sun, Nov 29, 2015 at 4:31 PM, Лера Гранкина wrote: > Hello, Mr.McCarthy! > I cannot figure out the way Racket fin

[racket-users] [racket] How to extend image-snip% with a new field

2015-11-29 Thread Guilherme Ferreira
Hello, I'm trying to implement an image-snip% subclass which has a new field (hash table) to store some metadata. I follow the example described in the documentation, but the constructor of my image-snip subclass does not display the bitmap. Here is my code.. Thanks in advance. (define image

[racket-users] 1-d Haar wavelet transform?

2015-11-29 Thread 'John Clements' via Racket Users
I’m a bit of the way down this rabbit hole—I’ve written code to generate Haar basis functions for the slow n^2 decomposition on 1-d arrays—so before I go any further, is there already a library that does this in Racket? Thanks! John -- You received this message because you are subscribed to

Re: [racket-users] "bad variable linkage" after restarting handin server under load

2015-11-29 Thread Robby Findler
On Sunday, November 29, 2015, Paolo Giarrusso wrote: > On Friday, November 27, 2015 at 3:44:20 AM UTC+1, Robby Findler wrote: > > Yes, I think you're right. I originally wrote that because I was > > thinking that this code might be involved in evaluating the user's > > submission, but I am not pr

Re: [racket-users] "bad variable linkage" after restarting handin server under load

2015-11-29 Thread Paolo Giarrusso
On Friday, November 27, 2015 at 3:44:20 AM UTC+1, Robby Findler wrote: > Yes, I think you're right. I originally wrote that because I was > thinking that this code might be involved in evaluating the user's > submission, but I am not pretty sure I was wrong about that. "not pretty sure"? AFAICS,