Il giorno 18/mag/2015, alle ore 21.34, Jens Axel Søgaard ha scritto:
2015-05-18 21:25 GMT+02:00 Michael Tiedtke michael.tied...@o2online.de:
Il giorno 18/mag/2015, alle ore 20.50, Jos Koot ha scritto:
I think Rackets's reference and guide are *very clear* about eq?, eqv? and
equal?.
I'm trying to implement a for/stream loop using for/fold/derived that will
return a lazy stream, as would be expected. One way to do this is by using
delimited control, which is what I'm currently trying. If there's an easier
way, let me know, but I'd still like to figure this out as a
I don't think keybinding support or slide-changing operations are there
already. My guess is that they'd be easy to add.
At Tue, 19 May 2015 19:30:35 -0700, 'John Clements' via users-redirect wrote:
I’m creating a simple slideshow, and I’d like to be able to jump to a given
slide instantly,
As I've continued to experiment with this, I've run into something that I don't
really understand. I've managed to come up with this snippet of code.
(define (do prompt-tag)
(define (loop element continue)
(if continue
(+ element (call-with-continuation-prompt continue prompt-tag
I’m creating a simple slideshow, and I’d like to be able to jump to a given
slide instantly, ideally by pressing a particular key. Basically, I’d like to
be able to write this:
#lang slideshow
(extend-keyboard-handler
(lambda (key default-handler)
(match key
[1 (jump-to-slide
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C A L L F O R P A P E R S
-
DLS 2015 ===
11th Dynamic Languages Symposium
Hi
i wonder if it could be quite straight forward to build a binary file with the
raco exe as a shared library with Position Independent Code ?
I'd like to be able to build osv.io qemu images from racket projects.
It would be a pretty damn killer feature.
osv.io is some kind of a unikernel
Hi,
I've been trying out Racket for 2D graphics tasks and have come across the
Racket math library. Firstly just wanted to say a big thank you to the
developers for such a well thought out and documented library.
I've had problems in the past with floating point comparison, especially around
What's happening here is that when typechecking a `let loop`, Typed
Racket will try to guess the loop argument types from the initial
values. Here, it converts `Null` into `(Listof Any)`, and then that
choice runs into trouble later.
The simplest fix here is to pass something with the type
This program raises a type error about unsafe-car
(for ([x : Void (in-list '())]) x)
So far, I've found ways to remove the error
1. Remove the annotation on x
2. Remove the in-list hint
3. Use a non-empty list
Is this a bug?
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