[Haskell-cafe] Stream fusion

Yves Parès limestrael at gmail.com
Fri Nov 18 10:48:11 CET 2011


While re-reading RealWorldHaskell, chapter 25, I saw that -- unlike I
believed -- loop fusion wasn't activated by default under GHC for lists
(but that module Data.List.Stream from package stream-fusion could provide
Is that still the case? If not, then are there some cases of list
processing where loop fusion would be a bad thing? (Ergo cases where you
should stick to Prelude/Data.List functions and not use Data.List.Stream

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