It would be unreasonable to have designed a generics implementation into Go 1 that did not cover the builtin polymorphic map, slice, and append. A simple set of

It would be unreasonable to have designed a generics implementation into Go 1 that did not cover the builtin polymorphic map, slice, and append. A simple set of orthogonal features is an important principle in Go. For these, performance is most certainly critical.