topazproject/topaz — pull request #572 by kostya (2013-04-01 00:21:41+00:00)
Title: array combination, permutation

Porting itertools to rpython.
Other tags whould be removed after merging https://github.com/topazproject/topaz/pull/566.
Pure algorithms speed is about mri, but with enumerator its 10-30% slower.