libghc-permutation-dev - 0.5.0.5-3+b2 main

This library includes data types for storing permutations and
combinations. It implements pure and impure types, the latter of
which can be modified in-place. The library uses aggressive
inlining and MutableByteArray#s internally, so it is very
efficient.
.
The main utility of the library is converting between the linear
representation of a permutation and a sequence of swaps. This
allows, for instance, applying a permutation or its inverse
to an array with O(1) memory use.
.
Much of the interface for the library is based on the permutation
and combination functions in the GNU Scientific Library (GSL).
.
This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.