[ENH] converse-raok

ok at cs.otago.ac.nz ok at cs.otago.ac.nz
Tue Oct 1 04:05:13 UTC 2002


from preamble:

"Change Set:		converse-raok
Date:			30 September 2002
Author:			Richard A. O'Keefe

There are applications, like reserving a sorted collection,
or sorting in reverse order, but not limited to those,
where we would like to take the converse of a predicate.
The converse of a function f : (x, y) -> z is a function
converse(f) : (y, x) -> z.

This change set adds a class BinaryBlockConverse and methods
so that aBlock converse value: x value: y = aBlock value: y value: x."!
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