From: John <nojgoalbyspam@...>
Date: 2002-07-28T07:33:17+09:00
Subject: Re: Call-by-need and/or Delayed Evaluation

"Jonas B�low" <j@bulow.mine.nu> wrote in message
news:3D425F40.C94B43D1@bulow.mine.nu...
> Hi,
>
> John wrote:
> >
> > "Reginald Braithwaite-Lee" <raganwald@yahoo.com> wrote in message
> > news:243c635a.0207261955.54ae0bf@posting.google.com...
> > > Hello:
> > >
> > > Has there been any work on using Ruby's closures to implement
> > > call-by-need semantics, such as the freeze and thaw or delay and force
> > > macros in Lisp?
> > >
> > > I'm especially interested in implementations of the Streams mentioned
> > > in Abelson amd Sussman's "Structure and Interpretation of Computer
> > > Programs"
> > >
> > > Thanks!
> > >
> > > In shallow waters, shrimps make fools of dragons. - Chinese Proverb
> >
> > Would it be possible to give pointers to information on the web for this
> > Streams idea, or perhaps give us an overview?  I am intrigued as to what
> > they are.
>
> The book is online. The chapter about streams is found at:
>
> http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-24.html#%_sec_3.5
>
> And the complete book (great book!): is found at:
>
> http://www-mitpress.mit.edu/sicp/
>
> Regards
>
>
>
> >
> > Thanks
> >
> > John.
>
>

Wow, Thanks!  Now to find the time to read it!!!!
John.