K 10 svn:author V 4 miwi K 8 svn:date V 27 2008-11-15T19:51:57.000000Z K 7 svn:log V 333 Differences lists are 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. WWW: http://code.haskell.org/~dons/code/dlist/ PR: ports/128770 Submitted by: Samy Al Bahra END