Extra-1.30: A grab bag of modules. Source code Contents Index

Extra.Either

Synopsis

lefts :: [Either a b] -> [a] rights :: [Either a b] -> [b] concatEithers :: [Either a b] -> Either [a] [b] partitionEithers :: [Either a b] -> ([a], [b])

Documentation

lefts :: [Either a b] -> [a] Source

rights :: [Either a b] -> [b] Source

concatEithers :: [Either a b] -> Either [a] [b] Source

Turn a list of eithers into an either of lists

partitionEithers :: [Either a b] -> ([a], [b]) Source

Return a pair of the lefts and the rights

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