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Joachim Breitner authored
Summary: Rewrites takeWhile to a build/foldr form; fuses repeated applications of takeWhile. Reviewers: nomeata, austin Reviewed By: nomeata Subscribers: thomie, carter, ezyang, simonmar Projects: #ghc Differential Revision: https://phabricator.haskell.org/D322 GHC Trac Issues: #9132
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