It is not possible and I think it is unlikely to ever happen (though it
might be reasonably implemented as a library at some point).
On Thu, Dec 23, 2021 at 9:42 PM aind...@gmail.com <aindu...@gmail.com>
wrote:
> Now that generics is coming along, is there an easy way to extend the
> builtin map type to use a non-comparable key type? For example, given this
> constraint
>
> type Key[T any] interface {
> Size() uint64
> Hash(seed uint64) uint64
> Equal(T) bool
> }
>
> and a type Foo like
>
> type Foo []int
> func (a Foo) Size() uint64 { ... }
> func (a Foo) Hash(seed uint64) uint64 { ... }
> func (a Foo) Equal(b Foo) bool { ... }
>
> I'd like a map[Foo]struct{}. Is this possible now? Or does the runtime map
> have to be updated to support this?
>
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