I apologize for the long ping time on this -- for whatever reason I didn't get
any of the replies sent to my email and I thought no one had responded.
JCG, Jack, thank you very much for taking the time.
Jack: I had to stare at your code for a while before I got it, but thank you
for it. That
I couldn't write an example that is not obvious, but this programs
looks ok to me:
;---
#lang racket
(define (display-vector v)
(for ([x (in-vector v 0 (vector-length v))])
(display x)))
(display-vector (vector 1 2 3))
(newline)
(display-vector (vector))
(newline)
;---
And I also like (in-
Perfect! That was my hope. One more question: if I did want to opt-in to
continuations for just a single portion of my application, could I? The
way I’ve been structuring my application is to have a module that serves
as an entry point that calls serve/servlet and passes a dispatch
function defined
If you do not use send/suspend or send/suspend/dispatch, no continuations
are ever saved. You do not need to "opt out". You "opt in" to continuations.
Jay
On Tue, Jan 19, 2016 at 7:07 PM, Alexis King wrote:
> I’ve been using the Racket web server, and I’m very pleased with how
> easy it’s been
I’ve been using the Racket web server, and I’m very pleased with how
easy it’s been to get a simple working application. However, so far, I
haven’t been using send/suspend or any of the other features that
leverage continuations.
I’ve been wondering: since I’m not using send/back (just returning
r
On Tuesday, January 19, 2016, Stephen Chang wrote:
> > I think you should not change this backwards compatibility unless you
> > really know it isn't used (and even then it is hard to know such
> > things).
>
> Well I still think these programs would be relying on a bug, since
> they are referenc
> I think you should not change this backwards compatibility unless you
> really know it isn't used (and even then it is hard to know such
> things).
Well I still think these programs would be relying on a bug, since
they are referencing a non-existent vector element.
But since there's no agreeme
//
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> On Jan 19, 2016, at 11:14 AM, Leif Andersen wrote:
>
> Is it possible to either create a variable that persists until the
> Racket VM shuts down or get a list of all of the libraries that are
> shared libraries that are currently being linked against the racket
> vm?
I can’t help you. But! Th
I think you should not change this backwards compatibility unless you
really know it isn't used (and even then it is hard to know such
things).
Robby
On Tue, Jan 19, 2016 at 1:16 PM, Stephen Chang wrote:
> Yes, or course it's possible, at the expense of more unreadable code.
>
> But the zero spe
Yes, or course it's possible, at the expense of more unreadable code.
But the zero special case doesnt make sense. And is inconsistent with
other out-of-range cases, eg (in-vector (vector) 1 1) errors
To be clear, empty traversals with valid indices would still be legal,
eg (in-vector (vector 1 2
Is it possible to either create a variable that persists until the
Racket VM shuts down or get a list of all of the libraries that are
shared libraries that are currently being linked against the racket
vm?
The reason why I ask is because I created a `from-c` require form[1],
which takes in a C im
Would it be possible to special-case `(in-vector (vector) 0 0)`
directly, and fix the bug while keeping backwards compatibility?
Vincent
On Tue, 19 Jan 2016 12:19:12 -0600,
Stephen Chang wrote:
>
> I'm fixing pr 15227 but I would like to do so in a backwards-incompatible way.
>
> Right now an
I'm fixing pr 15227 but I would like to do so in a backwards-incompatible way.
Right now an out-of-range index is sometimes allowed as an argument to
in-vector, leading to the bug:
$ racket
Welcome to Racket v6.4.0.4.
-> (for/sum ([x (in-vector (vector 10 20) 2 -1 -1)]) x)
SIGSEGV MAPERR si_code
On 01/17/2016 06:35 PM, Alexis King wrote:
The DB docs for SQL type conversions[1] note that not all Postgres types
are supported by Racket, and it recommends using a cast to work around
this. It even uses the inet type as an example right at the start of the
page. However, I want to store an ine
I just read the chapter of graph traversing from HtDP's website:
http://www.ccs.neu.edu/home/matthias/HtDP2e/part_five.html#%28part._fsm._sec~3atraverse-graph1%29
The implementation of graph traversing is the calling sequence of:
`find-path` -> `find-path/list` -> `find-path` -> ...
I must say
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