Rather than listing a large number of identifiers in a (recontract-out
...) spec, I'd like to re-contract everything from a certain required
private module. I don't know how to do this. The crux of the problem
is that syntax-local-module-required-identifiers can only be called
while a provide trans
On 2014-09-10 22:50:35 -0400, Anthony Carrico wrote:
> "The filter specifies that when (string? x) evaluates to a true value,
> the variable x can be assumed to have type String. Likewise, if the
> expression evaluates to #f, the variable has type String."
>
> I think there must be a typo here, wha
In http://docs.racket-lang.org/ts-reference/type-ref.html
1.6 Other Type Constructors
"The filter specifies that when (string? x) evaluates to a true value,
the variable x can be assumed to have type String. Likewise, if the
expression evaluates to #f, the variable has type String."
I think ther
On Wed, Sep 10, 2014 at 7:46 PM, Matthew Flatt wrote:
> That's a bug in v6.1 and earlier (on platforms other than Mac OS X).
>
> The bug has been fixed for the next version, so you could try a
> snapshot from
> http://pre.racket-lang.org/
>
> If you need to stick with a different version, I thin
That's a bug in v6.1 and earlier (on platforms other than Mac OS X).
The bug has been fixed for the next version, so you could try a
snapshot from
http://pre.racket-lang.org/
If you need to stick with a different version, I think you can work
around the bug by creating a `canvas%` subclass that
I've been working on a program that uses "init-auto-scrollbars" and I
noticed that when the window is resized it actually changes the size of the
virtual canvas along with the literal canvas instead of just resizing the
scrollbar and changing the size of the literal canvas.
Here's an example that
On Wed, Sep 10, 2014 at 5:03 PM, John Clements wrote:
> It's possible to specify "version exceptions" in the new package catalog
> system (i.e., on pkg.racket-lang.org). I want to use one version (old
> version) for pre-6.0, and another one for >= 6.0. IIUC, the right way to do
> this is to specif
It's possible to specify "version exceptions" in the new package catalog
system (i.e., on pkg.racket-lang.org). I want to use one version (old
version) for pre-6.0, and another one for >= 6.0. IIUC, the right way to do
this is to specify a mapping for 'default to my pre-6 branch, and then
explicit
The arguments are the The function position is or
Essentially, the grammar in sec20 extends sec8 with the ability to:
- pass functions and primitives, like +, as arguments, and
- compute the applied function in the function position instead of
always using predefined s or s
Does that make
I remember having had that question when I was at that chapter. I must
have thought I answered it, but I'm having it again and unable to
answer now. IOW, I'm confused.
I'm having difficulties with this phrase too. "First, the names of
functions and primitive operations are used as arguments in
app
I believe it's answered in a subsequent paragraph?
"The abstract functions of section 19 violate Scheme's basic grammar
in two ways. First, the names of functions and primitive operations
are used as arguments in applications. An argument, though, is an
expression, and the class of expressions doe
I have not been able to verify this statement.
"As a matter of fact, the functions of section 19 violate the Scheme
grammar of section 8." -- First paragraph of section 20.
I think the statement is referring to functions such as filter1.
(define (filter1 rel-op alon t)
(cond
[(empty? alo
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