* Log4bob <qdong...@gmail.com> [241028 08:47]:
>
>
> Given there's a generic interface:
> type Packet interface { Content() int } type Recycler[T any] interface {
> Get() *T }
>
> and their implementation:
> type packet struct { content int } type BaseRecycler[T any] struct { t T }
>
> its impossible to convert the implementation to the interface:
> r := &BaseRecycler[packet]{} r1 := r.(Recycler[Packet])
> fmt.Println(r3.Get().Content()) // compile error: Unresolved reference
> 'Content'
>
> here is a live code example: https://go.dev/play/p/qbnYfyDd22A
>
> The error is because the Packet interface align with the *packet instead of
> packet. Could anyone suggest how to handle this?
If you uncomment line 39 (assignment to r3), add «_ = r3» to avoid
"unused variable" error, and run it, you get a runtime panic. Your
primary problem is related to this FAQ:
https://go.dev/doc/faq#convert_slice_of_interface
because BaseRecycler[packet] is "struct { t packet }" not "struct { t
Packet }" so r is *struct { t packet }, which has a different, and
differently sized, internal representation.
What are you really trying to do?
...Marvin
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