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lib: document mapM'

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Simon Michael 2019-02-16 15:57:29 -08:00
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commit b34b262c76
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hledger-lib/Hledger/Utils.hs
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@ -220,6 +220,7 @@ sequence' ms = do
x <- m
go (h . (x :)) ms
-- | Like mapM but uses sequence'.
{-# INLINABLE mapM' #-}
mapM' :: Monad f => (a -> f b) -> [a] -> f [b]
mapM' f = sequence' . map f