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Re: [FWP] Lazy Evaluation question (was: Anybody look at Ruby?)

To: fwp@technofile.org
Subject: Re: [FWP] Lazy Evaluation question (was: Anybody look at Ruby?)
From: John Porter <jdporter@min.net>
Date: Tue, 21 Mar 2000 11:52:19 -0500
In-Reply-To: <djvh2g9zle.fsf@planet.dcs.ed.ac.uk>; from aaron.crane@pobox.com on Tue, Mar 21, 2000 at 02:17:49PM +0000
References: <Pine.LNX.4.10.10003170649320.13650-100000@john.netsys.co.za> <38D5A429.7812F076@kasey.umkc.edu> <djvh2g9zle.fsf@planet.dcs.ed.ac.uk>

Aaron Crane wrote:
> 
> ...a friendly lazy-evaluation mechanism will ensure that the
> execution of a delayed block of code is forced no more than once.  It's
> probably therefore worth wrapping the closure-manipulation up in a package.

Take a look at Mark-Jason's Perl Journal article on "infinte lists" 
(aka "streams"):

  http://www.plover.com/~mjd/perl/Stream/

-- 
John Porter

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References:
- Re: [FWP] Anybody look at Ruby?
  - From: John Carter <john@netsys.co.za>
- [FWP] Lazy Evaluation question (was: Anybody look at Ruby?)
  - From: "David L. Nicol" <david@kasey.umkc.edu>
- Re: [FWP] Lazy Evaluation question (was: Anybody look at Ruby?)
  - From: Aaron Crane <aaron.crane@pobox.com>

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