hello
from the following code, I expected
'#(#(#("2" "2" "3") #("1" "2" "3")) #(#("1" "2" "3") #("1" "2" "3")))
but
the interpreter pop the
'#(#(#("2" "2" "3") #("2" "2" "3")) #(#("2" "2" "3") #("2" "2" "3")))
how can I change only one element in the vector?
===following code===
#lang racket
(defin
hello
I am trying to overlay two or more images(not in universe)
but I can't make it as transparent
setting brush with transparent option doesn't work
original image's format is png though.
do I have to convert them into bitmap?
or is there any option or something to make it transparent?
thanks i
>
> I'm trying to see if the geolocation code I'm using for Moby (my
> Racket->Android compiler) is robust across different Android
> smartphones. If you're interested, can you run the following program
> on your Android phone and let me know if it runs well?
I got enough feedback across several
Hi everyone,
I'm trying to see if the geolocation code I'm using for Moby (my
Racket->Android compiler) is robust across different Android
smartphones. If you're interested, can you run the following program
on your Android phone and let me know if it runs well? It's a simple
world program that
Hi everyone,
I'm trying to see if the geolocation code I'm using for Moby (my
Racket->Android compiler) is robust across different Android
smartphones. If you're interested, can you run the following program
on your Android phone and let me know if it runs well? It's a simple
world program that
30 minutes ago, Joe Marshall wrote:
>
> My understanding is that convention is to capitalize at the
> beginning of a sentence or when using a proper name. Among the tech
> savvy, using all capital letters is interpreted as shouting.
> Lawyers seem to think that extremely important sentences shoul
On Fri, Nov 19, 2010 at 9:57 AM, Don Blaheta wrote:
> A student of mine is having trouble keeping track of when to use capital
> vs lowercase letters---a common problem I've seen before, with any intro
> language---and in particular, keeps trying to write True and False
> instead of true and false
Eli Barzilay wrote:
After talking to Sam about it, he pointed out the further problems
that you get into with TR's limitations wrt the repl. A potentially
simple solution for this would be a variant of the the interactions
thing that will get some code then run it as a *module*, and show the
res
After talking to Sam about it, he pointed out the further problems
that you get into with TR's limitations wrt the repl. A potentially
simple solution for this would be a variant of the the interactions
thing that will get some code then run it as a *module*, and show the
results, instead of using
10 minutes ago, Neil Toronto wrote:
>
> The problem: because we create one evaluator and use it for everything,
> our documentation examples aren't independent.
This is only to make it run faster. Creating a sandbox can be
expensive, and I'd expect a TR sandbox to be much more expensive.
BTW,
Neil,
Check out make-eval-factory and make-base-eval-factory in
scribble/eval. They let you create new evaluators that nevertheless
share compiled versions of the modules you are using. That way you
don't recompile your language and instantiate new modules at each
example. It's not super fast -
Sam Tobin-Hochstadt wrote:
On Thu, Nov 18, 2010 at 7:48 PM, Neil Toronto wrote:
But Typed Racket craps on me if I use the typed macros inside a sandbox in
Scribble. For example, using @(example #:eval my-eval (bftest-error (bfexp
(bf 2 gives me this:
(bftest-error (bfexp (bf 2)))
eval:6
Hi, Im sorry if I appear to be coming here a lot, just having trouble with the
algorithm section more than any others.
http://www.htdp.org/2001-01-18/Book/node145.htm
I believe I completed find-root-linear, which to me seems like just testing if
a number in the table is a root of some function,
Actually, I'm pretty sure the False signature has worked for me once
where I was returning true. But anyway, as Matthias has pointed out,
the signatures are gone now.
_
For list-related administrative tasks:
http://lists.racket-lang.org/listinfo/
I have removed the signatures from BSL precisely for reasons like that.
Please update to Version 5.0.2.
Once again, apologies for allowing checked signatures to slip into 5.0.1.
-- Matthias
On Nov 19, 2010, at 12:57 PM, Don Blaheta wrote:
> A student of mine is having trouble keeping trac
A student of mine is having trouble keeping track of when to use capital
vs lowercase letters---a common problem I've seen before, with any intro
language---and in particular, keeps trying to write True and False
instead of true and false. After a very strange discussion with him I
went and tested
2010/11/18 Vincent St-Amour :
> Guillaume Marceau wrote a script for that:
> http://lists.racket-lang.org/users/archive/2003-November/003715.html
In Marceau's mail I get the impression, that etags makes it possible to
jump from a function name to the definition of the function.
In DrScheme one wo
I can't help with the Windows 7 problem, but you probably don't want
that thread there...
On Wed, Nov 10, 2010 at 2:42 PM, Sébastien Cano wrote:
> Hi,
> I'm currently working on a space invaders and I'm facing a problem with
> Windows 7.
>
> Given that I'm not really familiar with the concept of
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