On Sat, Oct 22, 2022 at 1:40 AM 'Aaron Beitch' via golang-nuts <
golang-nuts@googlegroups.com> wrote:
> I have types Foo and Bar. Bar's underlying type is Foo.
>
The underlying type is defined recursively and always either a predeclared
type (int, string…), or a type literal.
The underlying type of Bar is the underlying type of Foo, which is struct {
data []string }. You might try using `~struct{ data []string }`.
> I want a function that takes in pointers to types whose underlying type is
> Foo, but I get a compile error when trying to call this function:
>
> *Bar does not implement ~*Foo (*Bar missing in ~*main.Foo)
>
> Should this work?
>
> My real use case is around a hash map library. It's implementation is a
> copy of Go's built-in map, but allows the user to control the equal and
> hash function, thus allowing keys of any type rather than just comparable
> types. github.com/aristanetworks/gomap
>
> I would like to provide helper functions
> <https://github.com/aristanetworks/gomap/blob/main/funcs.go> for
> gomap.Map similar to those provided by golang.org/x/exp/maps and for
> those helpers to work on pointers to types whose underlying type is
> gomap.Map.
>
> Thanks,
> Aaron
>
>
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