map -package:Cabal -package:base -package:text -package:pipes -package:containers -package:regex-tdfa -package:bytestring is:module -package:rerebase -package:non-empty -package:algebra package:ghc-lib-parser

RoughMap is an approximate finite map data structure keyed on [RoughMatchTc]. This is useful when keying maps on lists of Types (e.g. an instance head).