From: James Edward Gray II <james@...>
Date: 2007-11-28T22:36:30+09:00
Subject: Re: Ruby needs continuations...

On Nov 28, 2007, at 7:00 AM, Austin Ziegler wrote:

> On 11/28/07, Vitor Peres <dodecaphonic@gmail.com> wrote:
>> On Nov 28, 2007 10:30 AM, Just Another Victim of the Ambient  
>> Morality <
>> ihatespam@hotmail.com> wrote:
>>>    How would one do this in Ruby?  You can use .each_with_index  
>>> and index
>>> the other list but that assumes that the other list is indexable,  
>>> which
>>> only happens to be true of arrays but is not true in general.   
>>> I've thought
>>> about implementing some Ruby equivalent of zip() (or preferably  
>>> izip()) and
>>> discovered that I can't do so without continuations.
>
> Actually, Ruby 1.9 is losing continuations (hard to do with native
> threads, expensive for stack frame manipulation in JRuby).

That's not entirely true.  In Ruby 1.9, continuations have been moved  
out of the core but are still available from a standard library.

James Edward Gray II