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add mapMaybe and mapEither, plus WithKey variants
[haskell-directory.git]
/
Data
/
IntSet.hs
diff --git
a/Data/IntSet.hs
b/Data/IntSet.hs
index
9053098
..
b48a7c8
100644
(file)
--- a/
Data/IntSet.hs
+++ b/
Data/IntSet.hs
@@
-212,7
+212,7
@@
member x t
-- | /O(log n)/. Is the element not in the set?
notMember :: Int -> IntSet -> Bool
-notMember k = not $ member k
+notMember k = not . member k
-- 'lookup' is used by 'intersection' for left-biasing
lookup :: Int -> IntSet -> Maybe Int