From: Charles Oliver Nutter <charles.nutter@...>
Date: 2006-10-28T04:43:35+09:00
Subject: Re: No continuations in Ruby2?

Phil Tomson wrote:
> According to this article:
> http://www.artima.com/forums/flat.jsp?forum=281&thread=180325
> 
> ....Ruby 2 will not have continuations.  Is this true?  If so, why
> would continuations be dropped?   It'll be pretty tough to implement
> RHDL without continuations.
> 
> so will Ruby lose continuations right about the time Python is getting 
> them?

I think this has been clarified in a few other forums, but it seems that 
the situation is as follows:

- YARV does not support continuations now
- YARV can support continuations, but it's not a high priority
- Ruby 1.9.1 + YARV probably won't have continuations
- Matz does want continuations to eventually be supported by YARV

I believe the "no continuations in Ruby 2.0" stemmed from a translation 
of Matz or ko1 comment at the Ruby Kaigi...or at least, that's where I 
got it from. I guess the general recommendation is that if you need 
continuations and would like to see them available in the 1.9 series 
sooner, you'll need to cough up a compelling use case.

If continuations become something everyone really must have, I'll try to 
find a way to make them work in JRuby. For now, they're unsupported.

-- 
Charles Oliver Nutter, JRuby Core Developer
Blogging on Ruby and Java @ headius.blogspot.com
Help spec out Ruby today! @ www.headius.com/rubyspec
headius@headius.com -- charles.nutter@sun.com