#9132: takeWhile&C. still not fusible -------------------------------------+------------------------------------- Reporter: Blaisorblade | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 7.8.2 Resolution: | Keywords: fusion Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: Runtime | Difficulty: Moderate (less performance bug | than a day) Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------- Comment (by Blaisorblade):
BTW, wat do you mean by
But this is a foldr, while takeWhile should be a foldl!
Please ignore that, I've just removed that comment from my example. (If you're curious, when I wrote that comment I hadn't realized that right folds in a lazy language process the list left-to-right rather than right- to-left, and more such confusion; then I figured it out but forgot to remove the comment).
Looks ok, so if you want go ahead with building GHC and running nofib.
On it! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9132#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler