Revision history for Perl extension Math::Combinatorics. 0.01 Tue Sep 21 19:06:32 2004 - original version; created by h2xs 1.21 with options -AXn Math::Combinatorics 0.02 o Bugfix to permute() method, reported by Marc Logghe. o Combinations/Permutations now calculated using iterator. Uses less memory for very large sets (David Coppit, Tye, Christopher Eltschka). 0.03 o Added reference to Set::Scalar, Set::Bag o new() accepts a 'compare' option. o new() presorts the set by this ('compare' value is a sorting subroutine code reference). this addresses a combine/permute bug when using a set of references, identified by Ying Yang . 0.06 o Added multiset, string, and derangement methods for OO mode o Corrections to documentation examples 0.07 o Fixed syntax error under 5.8.7 0.08 o Eh? 0.09 o Optimized re-implemention of derange() by Carlos Rica