# HG changeset patch
# User James Bergstra <bergstrj@iro.umontreal.ca>
# Date 1257893076 18000
# Node ID bc4c50bec0fec1281626363aa6bc83d1e467cff1
# Parent  55abddf8603a0a31d800df26994f19ff5f66486d
added cache member to memo-ized functions