use Perl

I was very proud of this recent substitution that implements the Euclidean algorithm: http://perlmonks.org/?node_id=804838 It follows in the fine tradition of the regex primality test by using repeated capturing groups to perform division with remainder.

I got very interested a while back, and stumbled on a slew of distributions that do similar things. In addition to those that are mentioned in reply to revdiablo's post, would any of Object::Lazy, Class::Delay, or Object::Trampoline (obtained by searching for 'delay' on CPAN) do something like what you'd like?