Both
type X int | string
and
type X interface int, string
Are meant to be a syntax sugar for:
type X interface {
type int, string
}
It is not a sum type, but rather a generic type that needs to be
instantiated before the use. That is why it cannot have a zero value:
var x X // error, X must be instantiated before the use
But i think one should not be able to write:
type X interface {
type int
String() string
}
But instead it must be something like this:
type X interface {
type int, fmt.Stringer
}
Or:
type X interface int, fmt.Stringer
Or:
type X interface int, interface{String() string}
https://go2goplay.golang.org/p/fNqNeDyM3R9
I do understand that this is kinda the same case like x.Name (complex
literals in contracts), but in my opinion it would bit a bit more
consistent syntax, wouldn't it?
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/golang-nuts/ffd67b7b-3f95-46eb-b826-c1b003fde2cco%40googlegroups.com.
