Thanks a lot!
As an aside, the playgound is great. It made this conversation so much
easier!
All the best,
Jochen
On Saturday, 18 February 2023 at 01:31:16 UTC Ian Lance Taylor wrote:
> On Fri, Feb 17, 2023 at 4:47 PM Jochen Voss <joche...@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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