[Haskell-beginners] Alternative

[Oliver Charles]

If you want something even simpler:

asum [Nothing, Just True, Nothing, Just False]

>From Data.Foldable :)

On Wed, 28 Dec 2016, 10:56 am Imants Cekusins, <imantc at gmail.com> wrote:

> 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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