Thanks, kortschak!
I still need some time to understand the proposal in
https://github.com/golang/go/issues/51338, but I think the code provided in
the Go Playground is exactly what I want!
On Friday, March 18, 2022 at 4:13:22 PM UTC+8 kortschak wrote:
> On Thu, 2022-03-17 at 18:47 -0700, RussellLuo wrote:
> > Is there any way to write a constraint, say, SliceOrMap, to support
> > either a slice or a map?
> >
> > With the help of SliceOrMap, then I can write a more generic version
> > `LenBetween` like this:
> >
> > ```go
> > func MapLenBetween[T SliceOrMap](s T, min, max int) bool {
> > return len(s) >= min && len(s) <= max
> > }
> > ```
>
> Not yet AFAICS, but see https://github.com/golang/go/issues/51338. If
> something like that is adopted, then you could write
> https://go.dev/play/p/4RyDr_u1WAM.
>
>
>
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