instance<A> static method
_CommutativeSemigroup<A>
instance<A>(
- A f(
- A a1,
- A a2
override
Create a CommutativeSemigroup
instance from the given function.
Implementation
// ignore: library_private_types_in_public_api
static _CommutativeSemigroup<A> instance<A>(A Function(A a1, A a2) f) =>
_CommutativeSemigroup(f);