raganwald / yahoo.com (Reginald Braithwaite-Lee) 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?

Since I couldn't find any, I wrote one for practice. I then got
ambitious and wrote a Denumerable module that implements potentially
infinite collections.

http://www.braithwaite-lee.com/tips/denumerables.html