(or, for convenience, you can use a type alias `type foo = struct{ data
[]string }`, which should allow you to write ~foo.
On Sat, Oct 22, 2022 at 7:11 AM Axel Wagner <axel.wagner...@googlemail.com>
wrote:
>
>
> 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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