In Common Lisp it's *, **, ***.
In Racket?
Michael
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When a slider is oriented horizontally the low value is on the left.
Oriented vertically it's at the top. Is there a way to flip the slider to
get the low value at the bottom?
Michael
Racket Users list:
http://lists.racket-lang.org/users
What I get is a white vertical line up the left side of my screen which, if
I click it, I can get to expand to an empty window with the title "Example."
Michael
On Sun, Sep 22, 2013 at 10:18 AM, Michael Rice wrote:
> Nevermind. It is displaying something up in the left-hand
Nevermind. It is displaying something up in the left-hand corner. Very easy
to overlook.
Michael
On Sun, Sep 22, 2013 at 10:10 AM, Michael Rice wrote:
> I'm exploring Racket's Gui Toolkit but I'm having a problem even getting a
> frame to "show" in interactive
I'm exploring Racket's Gui Toolkit but I'm having a problem even getting a
frame to "show" in interactive mode.
Definitions:
#lang racket/gui (clicked on run before entering lines below.
Interactions:
Welcome to DrRacket, version 5.3.6 [3m].
Language: racket/gui; memory limit: 128 MB.
> (define
I haven't used an SRFI for years. What's the extra racket code for
accessing one and where is it placed in a code file?
Michael
Racket Users list:
http://lists.racket-lang.org/users
I answered my own question by looking at the language menu, I think.
Michael
On Mon, May 21, 2012 at 4:02 PM, Michael Rice wrote:
> Can I get Racket's graphics capability with lazy Scheme?
>
> Michael
>
Racket Users list:
http://lists.racket-lang.org/users
Can I get Racket's graphics capability with lazy Scheme?
Michael
Racket Users list:
http://lists.racket-lang.org/users
>From pg. 399 in SICP:
An example that exploits lazy evaluation is the definition of a procedure
unless
(define (unless condition usual-value exceptional-value)
(if condition exceptional-value usual-value))
===
Huh? For both applicative and normal order, wouldn't both
exceptional-value AND u
The code below (kons) gets flagged in R5RS:
define: not allowed in an expression context in: (define dispatch (λ (m)
(cond ((= m 0) x) ((= m 1) y) (else (error "Argument not 0 or 1 -- KONS"
m)
Works fine if I replace the lambda symbols with "lambda".
Cause?
Michael
=
>From pag
Thanks, Vincent.
I didn't know traces had to be in the program itself.
Michael
From: Vincent St-Amour
To: michael rice
Cc: Vincent St-Amour ; Racket Users
Sent: Monday, October 10, 2011 1:49 PM
Subject: Re: [racket] Trace rejects set!
At Mon, 10 Oct
I'm looking at some old Scheme code and find that the code still works under
(#lang racket) but trace is unhappy with the use of set! in the traced
function.
set!: cannot modify a constant: next-leaf-generator
I also tried (#lang r5rs) but it's unhappy with my require.
(require racket/trac
Thanks Neil. just figured it out myself.
Michael
From: Neil Van Dyke
To: michael rice
Cc: "users@racket-lang.org"
Sent: Saturday, October 1, 2011 10:57 AM
Subject: Re: [racket] Starting Racket?
Remove the "/drracket" from the end of
Just installed the 64-bit Linux Fedora 14 version (I'm using F15), but seem to
be having a problem starting it up.
[michael@sabal ~]$ ls /usr/racket/bin/drracket
/usr/racket/bin/drracket
[michael@sabal ~]$ echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/michael/bin:/
That fixed it.
Thanks,
Michael
--- On Thu, 6/24/10, Noel Welsh wrote:
From: Noel Welsh
Subject: Re: [racket] Need a namespace
To: "michael rice"
Cc: users@racket-lang.org
Date: Thursday, June 24, 2010, 11:47 AM
Nope, it works as documented. Trying changing the language then, fr
y and install it for the call
to eval:
#lang scheme
(define ns (make-base-namespace))
(eval '(cons 1 2) ns) ; works
--- On Thu, 6/24/10, Noel Welsh wrote:
From: Noel Welsh
Subject: Re: [racket] Need a namespace
To: "michael rice"
Cc: users@racket-lang.org
Date: Thursda
eed a namespace
To: "michael rice"
Cc: users@racket-lang.org
Date: Thursday, June 24, 2010, 11:05 AM
It works for me...
N.
On Thu, Jun 24, 2010 at 4:01 PM, michael rice wrote:
>
> How do I make an empty namespace in DrScheme?
>
> This doesn't seem to work:
>
&g
How do I make an empty namespace in DrScheme?
This doesn't seem to work:
#lang scheme
(define ns (make-base-namespace))
Michael
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