Learning Functional Programming in Go

String base class

It's just like the Int class, but for strings:

type String stringfunc (s String) Equals(e Equals) bool {   stringVal := string(s)   switch x := e.(type) {   case String:      return stringVal == string(x)   case Int:      return stringVal == strconv.Itoa(int(x))   default:      return false   }}