libghc-dlist-dev - 0.8.0.4-3+b2 main

Differences lists: a list-like type supporting O(1) append.
This is particularly useful for efficient logging and pretty
printing, (e.g. with the Writer monad), where list append
quickly becomes too expensive.
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This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.