P5-set-intspan

Manages sets of integers

SetIntSpan manages sets of integers. It is optimized for sets that have long runs of consecutive integers. These arise, for example, in .newsrc files, which maintain lists of articles

alt.foo 1-21,28,31
alt.bar 1-14192,14194,14196-14221

Sets are stored internally in a run-length coded form. This provides for both compact storage and efficient computation. In particular, set operations can be performed directly on the encoded representation.

WWW http//search.cpan.org/dist/Set-IntSpan/