undefined | Better HN

0 pointswnoise9y ago0 comments

Why the exception for built-in types?

0 comments

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.

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

j / k navigate · click thread line to collapse

0 comments

perfmode9y 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.

wowoc9y ago

https://golang.org/ref/spec#Types

j / k navigate · click thread line to collapse