libghc-unordered-containers-doc 0.2.3.0-3build1 (i386 binary) in ubuntu trusty

 It contains efficient hashing-based container types. The containers
 have been optimized for performance critical use, both in terms of
 large data quantities and high speed.
 The declared cost of each operation is either worst-case or
 amortized, but remains valid even if structures are shared.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.