foldMapO<A, B> method

  1. @override
Option<B> foldMapO<A, B>(
  1. Semigroup<B> si,
  2. F fa,
  3. B f(
    1. A a
    )
)
override

Implementation

@override Option<B> foldMapO<A, B>(Semigroup<B> si, F fa, B f(A a)) => fa.foldMapO(si, cast(f));