4 ms·

Why the exception for built-in types?

• perfmode 10y ago
  I think it might be because you can't define methods on built-in types. func (s *[]string) Foo() is not valid. func (m map[int]string) Bar() is not valid.
  • wowoc 10y ago
    That too, but I rather meant predeclared named types. According to Go specification, types that you define with "type Name OldName" are named, but "int", "string" and the rest are named too. Go disallows declaring methods on predeclared types. https://golang.org/ref/spec#Types https://golang.org/ref/spec#Types