My strictness analyser in my brain hurts. Which one (foldl,foldl',foldr) is the
best way?
Prelude Data.Set Data.List> let s = fromList [1,2,3,4,5]
Loading package array-0.1.0.0 ... linking ... done.
Loading package containers-0.1.0.0 ... linking ... done.
Prelude Data.Set Data.List> foldl (.) id
(Data.List.map Data.Set.delete [1,3,5]) s
fromList [2,4]
Prelude Data.Set Data.List> foldl' (.) id
(Data.List.map Data.Set.delete [1,3,5]) s
fromList [2,4]
Prelude Data.Set Data.List> foldr (.) id
(Data.List.map Data.Set.delete [1,3,5]) s
fromList [2,4]
Which one is best?
--
Gracjan
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