mflatt answered some "why"s on the racket-dev list:
https://groups.google.com/d/msg/racket-dev/2BV3ElyfF8Y/4RSd3XbECAAJ
On Thu, Jul 20, 2017 at 12:34 AM, Lehi Toskin wrote:
> I've read through a few README's in the racket7 repo and I can't find
> anything specifically about *why* Racket is being
I've read through a few README's in the racket7 repo and I can't find anything
specifically about *why* Racket is being implemented on top of Chez Scheme, so
I suppose I'll be asking here:
Why the rewrite in the first place? Is it because C is ugly and yucky and
poopy? Why Chez Scheme and not,
Since newbies are always listening, I'll just mention something a lot of
people here (including Greg) already know. :)
Something like `file->lines` is a handy convenience, when you know the
file size won't break your system, and/or you're not writing reusable or
long-lived code.
Good practic
That's exactly what I was trying to do - thanks!
On Wed, Jul 19, 2017 at 12:26 PM, Greg Hendershott <
greghendersh...@gmail.com> wrote:
> If you frequently want to deal with files as a list of lines, you
> could wrap the code Ben showed you in a function:
>
> (define (file->lines file)
> (with-
If you frequently want to deal with files as a list of lines, you
could wrap the code Ben showed you in a function:
(define (file->lines file)
(with-input-from-file file
(λ ()
(for/list ([line (in-lines)])
line
As it happens, Racket already defines this function for you:
To take care of shadowing you need to keep track of which identifiers are
declared in each internal definition context.
Here is one way to do it.
/Jens Axel
#lang racket
;;;
;;; Declarations
;;;
;; This is a demonstration of how to write a declaration (or definition)
;; form, that can raise a sy
Hi Ben,
as Jens has pointed out, it pays off to read the context of an exercise (like
in the real world). The second exercise states
> If the terminology poses any difficulties, do re-read BSL Grammar.
where “BSL Grammar” is a link that explains BSL via a data definition (that’s
what a gram
7 matches
Mail list logo
