At Fri, 6 Jul 2012 15:19:25 -0400, Carl Eastlund wrote:
While I'm thinking about this -- since gensym in macros is a common
error, is it possible we could fix it so that it works? The unique
marks on generate-temporaries's output are marshalled in a way that
ensures marks in one module are
On Sat, Jul 7, 2012 at 8:38 AM, Matthew Flatt mfl...@cs.utah.edu wrote:
At Fri, 6 Jul 2012 15:19:25 -0400, Carl Eastlund wrote:
While I'm thinking about this -- since gensym in macros is a common
error, is it possible we could fix it so that it works? The unique
marks on
As Carl pointed out, I should explain more background.
Stephen and I are exploring how to get laziness in Racket w/o going
to Lazy Racket (in a sense). As I wrote the idea is to introduce laziness
in a somewhat transparent manner, the way Sam introduces types in a mostly
transparent manner
I may have made a mistake under time pressure:
[else (+ (force (sum (car x))) (force (sum (cdr x]
On Jul 7, 2012, at 10:19 AM, Sam Tobin-Hochstadt wrote:
On Sat, Jul 7, 2012 at 10:14 AM, Matthias Felleisen
matth...@ccs.neu.edu wrote:
p.s. Sam's version forces too early because
On Jul 7, 2012, at 10:27 AM, Sam Tobin-Hochstadt wrote:
Right, that's what I thought. This is only different in that:
(define v (delay (+ 1 2)))
(sum v) ; = v
Which means clients of `sum` now have to handle either Integers or
Promises. Is that intentional?
Yes.
;; ---
I've got an array structure like so:
(struct: (A) strict-array ([shape : (Listof Index)]
[data : (Vectorof A)])
Say I have this value:
(strict-array '(2 2) #(1 2 3 4))
I want it to print like this at the REPL:
#strict-array '(2 2) '[[1 2] [3 4]]
If there's
Neil, do you intend to provide differentiat and integrate and possibly adjoin
operations on operators from your math collection? -- Matthias
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On 07/07/2012 01:39 PM, Matthias Felleisen wrote:
Neil, do you intend to provide differentiat and integrate and possibly
adjoin operations on operators from your math collection?
I've considered numerical differentiation and integration. If you want
them, I'll make sure they
#lang typed/racket
(define: x : Index 1)
(: bar ((Vectorof Index) - (Vectorof Index)))
(define (bar xs) xs)
(: foo (All (A) ((Vectorof Index) - (Vectorof Index
(define (foo xs) xs)
So we have an Index `x' and a couple of identity functions `bar' and
`foo' that only differ by the fact
On Sun, Jul 8, 2012 at 12:58 AM, Neil Toronto neil.toro...@gmail.com wrote:
It runs directly counter to what I expect from immutable containers, which I
use most of the time:
This is the problem. Immutable containers are very different from
mutable ones, and your expectations shouldn't be
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