#9623: Use Data.List.dropWhileEnd -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: task | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler | Version: 7.8.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Easy (less than 1 | Type of failure: hour) | None/Unknown Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- The GHC tree has many instances of `reverse . dropWhile ... . reverse`. As well as being harder to read and work with (searching for those forms led me to discover #9616) this approach is less efficient than `dropWhileEnd`. I think I've found all the places this is used, and I'll submit a patch to fix all the instances except for tests and nofib. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9623 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler