On Sat, Dec 22, 2007 at 04:40:00PM -0500, Sterling Clover wrote: > I'm curious if you get the same performance difference importing > GHC.Listinstead of > Data.Char? I chased some dependencies, and Data.Char imports GHC.Arr, which > in turn imports GHC.List, which provides a bunch of fusion rules pragmas > that would probably optimize your (++) usage. If this is the case, not sure > if its a bug or not, but all this will have to be thought through as more > stream fusion is rolled out anyway, I suspect? > --S
The Prelude imports GHC.List, iirc. Stefan
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