dblack / superlink.net wrote:
> Hi --
> 
> On Tue, 25 Mar 2003, Hal E. Fulton wrote:
> 
> 
>>----- Original Message -----
>>From: "Julian Snitow" <vangczung / yahoo.com>
>>Newsgroups: comp.lang.ruby
>>To: "ruby-talk ML" <ruby-talk / ruby-lang.org>
>>Sent: Monday, March 24, 2003 11:59 AM
>>Subject: Re: Iterate over two lists in parallel
>>
>>
>>
>>>Ok, the basics of continuations:
>>
>>[snippage]
>>
quoted.snip!
> 
> Isn't that more of an 'do until' structure? :-)
> 
> 
> David
> 

As I understand it, you can define any known control structure using 
continuations.  (That's why the definition of the Scheme language 
(``R5RS'') takes just 50 pages.)  Everything else is just semantic 
sugar. :-)