[racket] How does free-identifier=? and bound-identifier=? works?

2011-04-09 Thread Veer
Hello, I am unable to understand how free-identifier=? and bound-identifier=? works? For example suppose I have a code : (lambda (x y) (let ([x 2]) x)) then how do I determine if last x in the body of let is not bound by first parameter to lambda? , using either free-identifier=? or bound-ide

Re: [racket] require url?

2011-04-09 Thread Eli Barzilay
Yesterday, Neil Van Dyke wrote: > By the way, a key per account is somewhat better than key per > package, [...] No user accounts. -- ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: http://barzilay.org/ Maze is Life!

[racket] DrScheme hangs under Ubuntu 11.04?

2011-04-09 Thread Hyungrok Kim
Hi all, I've been having some trouble running DrRacket under Ubuntu Unity, the new default interface in the upcoming Ubuntu 11.04 'Natty'. Specifically, the splash screen with the lambda icon appears, but when the IDE window itself opens the entire system hangs. I installed the 'racket' package

Re: [racket] Problems with Typed Racket

2011-04-09 Thread Robby Findler
On Sat, Apr 9, 2011 at 5:24 PM, Sam Tobin-Hochstadt wrote: > On Sat, Apr 9, 2011 at 5:50 PM, Renzo Orsini wrote: >> I was trying Typed Racket for the first time. >> >> when I do "Check Syntax" on the following function (which in a (untyped) >> Racket program works correctly) (I simplified the re

Re: [racket] Problems with Typed Racket

2011-04-09 Thread Sam Tobin-Hochstadt
On Sat, Apr 9, 2011 at 5:50 PM, Renzo Orsini wrote: > I was trying Typed Racket for the first time. > > when I do "Check Syntax" on the following function (which in a (untyped) > Racket program works correctly) (I simplified the real function): > > #lang typed/racket > > (: elaborate (String Stri

[racket] Problems with Typed Racket

2011-04-09 Thread Renzo Orsini
I was trying Typed Racket for the first time. when I do "Check Syntax" on the following function (which in a (untyped) Racket program works correctly) (I simplified the real function): #lang typed/racket (: elaborate (String String -> Any)) (define (elaborate in-path-name out-path-name) (let

Re: [racket] require url?

2011-04-09 Thread Neil Van Dyke
Eli Barzilay wrote at 04/09/2011 10:00 AM: Isn't this just old-fashioned code signing. I think people talked about it for PLaneT multiple times in the past, before Chrome existed. Or am I misunderstanding? I don't know wearher it's old-fashioned or not, butthe thing thatI've never

Re: [racket] require url?

2011-04-09 Thread Eli Barzilay
About a minute ago, Eli Barzilay wrote: > 5 hours ago, Neil Van Dyke wrote: > > Eli Barzilay wrote at 04/09/2011 12:12 AM: > > > There is a good solution for this that I recently saw -- the way that > > > chrome extensions are distributed. The summary of what I understand > > > from it is: an exte

Re: [racket] require url?

2011-04-09 Thread Eli Barzilay
5 hours ago, Neil Van Dyke wrote: > Eli Barzilay wrote at 04/09/2011 12:12 AM: > > There is a good solution for this that I recently saw -- the way that > > chrome extensions are distributed. The summary of what I understand > > from it is: an extension is a zip file with a prefix holding two > >

Re: [racket] require url?

2011-04-09 Thread Neil Van Dyke
Eli Barzilay wrote at 04/09/2011 12:12 AM: There is a good solution for this that I recently saw -- the way that chrome extensions are distributed. The summary of what I understand from it is: an extension is a zip file with a prefix holding two things -- a public key for the extension, and a si