comp.lang.scheme

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The Scheme Programming language.
Updated: 1 hour 26 min ago

lambda inside a let or letrec

Wed, 06/16/2010 - 09:00
My apologies in advance to comp.lang.scheme and comp.lang.lisp.
I am trying to run a certain syntax inside emacs lisp.
I know basically how let works
(let (list of pairs of var value) (function))
This is like a lambda function call , only the order is different.
But the novelty i saw reading a book on common lisp or scheme is this

[ANN] Call for Papers for 2010 Workshop on Scheme and Functional Programming

Wed, 06/16/2010 - 04:00
Please note that the deadline for submitting a paper to the Scheme
workshop is 6 days from now... I encourage all authors in their last
minute efforts to submit a paper!
Please visit the workshop website at [link]
for more details on the submission process and workshop.

[announce] Makers 1.0.0, macros with positional and optional arguments

Tue, 06/15/2010 - 22:00
Makers
======
Overview
--------
This package is a distribution of libraries for R6RS Scheme
implementations. In the paper:
"Keyword and Optional Arguments in PLT Scheme". Matthew
Flatt and Eli Barzilay. 2009 Workshop on Scheme and
Functional Programming.
the authors discuss ways to provide functions and macros

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NYC LOCAL: Tuesday 8 June 2010 Lisp NYC Meet and NYLUG Hack Meet

Tue, 06/15/2010 - 00:00
On Tuesday 8 June 2010 on the Island of the Manahattoes,
Lisp NYC will gather to eat and drink. And the NYLUG Hackfolk
will gather to first Squeak, then eat and drink. These two
meetings are in different places.
Full details below in the two official announcements.
Jay Sulzberger <secret...@lxny.org>

Racket v5.0

Mon, 06/14/2010 - 18:00
PLT is happy to announce the release of Racket, available from
[link]
With Racket, you can script command shells and web servers; you can
quickly prototype animations and complex GUIs; regexps and threads
are here to serve you. To organize your systems, you can mix and
match classes, modules or components. Best of all, you start

Where's Racket?

Mon, 06/14/2010 - 14:00
I'm a little puzzled here. The Racket website seems to point to a
download of DrScheme 4.2.5. If I type the following example program:
(define listener (tcp-listen 12345))
(let echo-server ()
(define-values (in out) (tcp-accept listener))
(thread (lambda () (copy-port in out)
(close-output-port out)))

ILC 2010

Mon, 06/14/2010 - 12:00
With the usual apologies to those who receive multiple copies of
this...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~
International Lisp Conference 2010
October 19-21, 2010
John Ascuaga's Nugget (Casino)
Reno/Sparks, Nevada, USA (near Lake Tahoe)

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Feature Survey - Tables, Weak References, and Guardians - Please Contribute

Sat, 06/12/2010 - 13:00
Hey Everyone,
I'm trying to compile a list of feature support for Scheme
implementations concerning tables, weak references and guardian like or
compatible features. I think I've come up with accurate counts, but maybe
someone could help me since I am not familiar with all of these
implementations.

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Fri, 06/11/2010 - 07:00
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Navigating Scheme Modules

Fri, 06/11/2010 - 04:00
Hello,
I've programmed a bit of CL (SBCL) and I'm trying to get more into
Scheme.
I'm converging on choosing PLT Scheme for a personal project, but I
find it slow/difficult to traverse the documentation to find the
functions I need.
Since I want my code to be as portable as possible I usually start by

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[r6rs] auxiliary syntaxes vs literals

Thu, 06/10/2010 - 06:00
When defining a new thing in Scheme style one can do:
(define-thing <alpha>
(property-a 1)
(property-b 2))
a very raw version of the DEFINE-THING macro could be:
(library (things)
(export define-thing)
(import (rnrs))
(define-syntax define-thing
(lambda (stx)
(syntax-case stx (property-a property-b)

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[announce] Infix 1.0.0, an infix to prefix transformer

Tue, 06/08/2010 - 09:00
Infix
=====
Overview
--------
This package is a distribution of libraries for R6RS Scheme
implementations; it provides the INFIX macro which converts
the traditional infix notation for expressions to the
equivalent Scheme's prefix notation.
The library has no dependencies; the implementation itself

Configuring DrScheme

Tue, 06/08/2010 - 07:00
Hello,
sorry for asking a PLT-specific question here, but what is the best way
to have functions and macro definitions from some file available in
addition to the features found in some language like "Pretty Big" or
"R5RS"?
Thank you,
Nicolas

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