getLastMonoid<T> static method

Monoid<Option<T>> getLastMonoid<T>()

Build an instance of Monoid in which the empty value is None and the combine function is based on the second Option if it is Some, otherwise the first.

Implementation

static Monoid<Option<T>> getLastMonoid<T>() =>
    Monoid.instance(const Option.none(), (a1, a2) => a2.isNone() ? a1 : a2);