Infinite Lists in Perl

This is an old, but interesting article on creating an infinite list structure in Perl. Granted that a real infinite list isn't possible, given the constraints of computing power and memory, but the structure built is more like a flow of data, or stream. The author compares it to using unix pipes - it creates a flow, that in theory, you could continue to pull data from as long as you like, creating the illusion of an infinite list.

Infinite Lists in Perl