[Seaside] continuations resources

[Ramon Leon]

> -----Original Message-----
> From: seaside-bounces at lists.squeakfoundation.org 
> [mailto:seaside-bounces at lists.squeakfoundation.org] On Behalf 
> Of Ramiro Diaz Trepat
> Sent: Tuesday, October 10, 2006 9:13 AM
> To: The Squeak Enterprise Aubergines Server - general discussion.
> Subject: [Seaside] continuations resources
> 
> I would like to have a better understanding of what 
> continuations are in general and how is the Seaside implementation.
> Why is it that they can not be implemented in Java without 
> Can anybody recomend me a resource to read about it?
> Thanks

Because they were implemented in Squeak, by saving, manipulating, and
restoring the stack.  Java doesn't allow this, so the VM needs changed to
implement continuations.

> changing the JVM.  Isn't everything implementable on Touring 
> Machines :) ?

No.. not without writing a Java interpreter that works differently than the
current VM.  It's a mistake to assume Turing equivalence means all languages
have equal expressive power, they don't.  I could mow my lawn with nail
clippers... But I'd rather use a riding lawnmower, but they're both
"capable" of doing the job; that's about all Turing equivalence really
means.

Ramon Leon
http://onsmalltalk.com