Add mapOrKeepIn
/ flatMapOrKeepIn
to F[Option[A]]
and F[Either[A,B]]
syntaxes
#501
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These are counterpart methods to newly shipped
Functor#mapOrKeep
andMonad#flatMapOrKeep
methods in Cats. From my tastes,mapOrKeepIn
might be highly useful whileflatMapOrKeepIn
is not as much as the former. But I still decided to add it too and have complete conformity with Cats.