Commit fbdf49f7 authored by Jake Keuhlen's avatar Jake Keuhlen Committed by Herbert Valerio Riedel

Adding two sentences from the abstract to the header documentation for Perm....

Adding two sentences from the abstract to the header documentation for Perm. This makes it so that you don't have to hunt down the paper to understand exactly what a permutation means
parent 02ba578a
......@@ -23,6 +23,12 @@
-- by Arthur Baars, Andres Loh and Doaitse Swierstra.
-- Published as a functional pearl at the Haskell Workshop 2001.
--
-- From the abstract:
--
-- A permutation phrase is a sequence of elements (possibly of different types)
-- in which each element occurs exactly once and the order is irrelevant.
-- Some of the permutable elements may be optional.
--
-----------------------------------------------------------------------------
......
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