[Haskell-cafe] From Rabhi's & Lapalme's book 'Algorithms - A Functional Programming Approach' I'm getting a non-exhaustive pattern match
mukeshtiwari.iiitm at gmail.com
Thu Jul 22 02:57:44 UTC 2021
g!(x, y) can return 'Nothing' as well, but you are not considering it
and therefore the non-exhaustive pattern.
On Thu, Jul 22, 2021 at 12:21 PM Casey Hawthorne <kc1956 at gmail.com> wrote:
> From Rabhi's & Lapalme's book 'Algorithms - A Functional Programming Approach' 1999, I'm getting a non-exhaustive pattern match
> weight x y g = w where (Just w) = g!(x,y)
> I can't figure out why
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