concatenate method
Combine the second value of Tuple2 using monoid
.
const tuple = Tuple2('abc', 10);
final ap = tuple.concatenate(Monoid.instance(0, (a1, a2) => a1 + a2));
expect(ap, 10);
Implementation
@override
T2 concatenate(Monoid<T2> monoid) => foldMap(monoid, identity);