[Haskell-beginners] Alternative

[Imants Cekusins]

discovered this handy snippet today (duh :):

>>> foldl (<|>) Nothing [Nothing, Just 1, Nothing, Just 2]
Just 1

basically, pick first Just from a list of Maybes


http://hackage.haskell.org/package/base-4.9.0.0/docs/Control-Applicative.html#g:2
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