On Mon, 2008-12-15 at 08:40 +0000, Neil Mitchell wrote: > That can only be a bug in stream fusion - concatMap should always be prefered!
Yes, but it is unclear from the article whether the concatMap (w/ stream fusion enabled) is Data.List.Stream's concatMap or the Prelude's concatMap. It's only a bug in the former case :) - George
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