On Fri, Feb 17, 2023 at 4:47 PM Jochen Voss <jochen.v...@gmail.com> wrote:,
>
> I would like to write a type constraint which matches types like the
> following:
>
> type v1 int
>
> func (obj v1) Add(other v1) v1 {
> return obj + other
> }
>
> type v2 string
>
> func (obj v2) Add(other v2) v2 {
> return obj + other
> }
>
> This should match anything with an Add() method which can add another item of
> the same type. I want to be able to write a function like the following:
>
> func Double[Adder ...???...](x Adder) Adder {
> return x.Add(x)
> }
>
> My best attempts is https://go.dev/play/p/R0WLqSq9dys , but this doesn't
> quite work. What is the correct type constraint to use?
This is one way to do it: https://go.dev/play/p/uUxkvds5HLB .
Ian
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