[Haskell-beginners] Maybe a -> Maybe b

PICCA Frederic-Emmanuel frederic-emmanuel.picca at synchrotron-soleil.fr
Fri Aug 25 12:45:37 UTC 2017

> Maybe implements the Functor type class (as an exercise, you can try to
> figure out the implementation), therefore you can simply use fmap, which
> in the case of Maybe, has type (a -> b) -> Maybe a -> Maybe b

Thanks I reallized this after sending the email



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