Some concrete implementations of the abstract interface of the Edison library for Haskell for use with hugs. . Edison is a library of purely function data structures for Haskell originally written by Chris Okasaki. Conceptually, it consists of two things: - A set of type classes defining data the following data structure abstractions: 'sequences', 'collections' and 'associative collections' - Multiple concrete implementations of each of the abstractions . This package contains the concrete implementations.