From: "Mauricio Fernández" <batsman.geo@...>
Date: 2003-04-12T07:41:24+09:00
Subject: Re: splat question

On Sat, Apr 12, 2003 at 05:39:05AM +0900, Chris Pine wrote:
> This sounds like lazy evaluation, the kind of stuff you can find around
> implemented with continuations.
> ----------------------------
> 
> Well, it might sound that way, but it really isn't.  :)
> 
> Lazy evaluation is much more involved and deep; I was only talking about a
> difference in implementation.
>
[...] 
> 
> Well, now that I think about it, perhaps it wouldn't be of much use without
> lazy evaluation.  I could still get the array_of_ones[500] with the above
> implementation, but I wouldn't be able to write a function to pairwise add
> infinite arrays, for example, and get an array_of_twos.
> 
> Would continuations really allow this sort of thing?  I don't see how you
> would use continuations to give you lazy evaluation or infinite arrays.

Generators provide some kind of restricted lazy evaluation (an arguably,
infinite arrays).

http://www.ruby-lang.org/cgi-bin/cvsweb.cgi/rough/lib/generator.rb
http://w3.one.net/~jweirich/talks/same_fringe/

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