You still need the struct because all of these s = append(s, f()) m[k] = f() c <- f() f().DoStuff() h(f(), g()) work with single-valued functions bu

You still need the struct because all of these s = append(s, f()) m[k] = f() c <- f() f().DoStuff() h(f(), g()) work with single-valued functions but not multi-valued functions. The feature is not well integrated with the rest of the language.