I think this is a much cleaner and more readable way to annotate generics
in Go. On the point of it not being a Go like, i don't think generics are
Go like in the first place, but it looks like it is coming to stay. I think
the go way is to make stuff easier to read and work with and if this
doesn't present an issue with the compiler, it is worth at least exploring.
On Friday, June 19, 2020 at 11:09:00 PM UTC, Ian Lance Taylor wrote:
>
> On Fri, Jun 19, 2020 at 3:57 PM <mit...@gmail.com <javascript:>> wrote:
> >
> > Would it be possible to have a generic type annotation syntax like this:
> >
> > // Print prints the elements of any slice.
> > // Print has a type parameter T, and has a single (non-type)
> > // parameter s which is a slice of that type parameter.
> > func Print(type T)(s []T) {
> >
> >
> > ==>
> >
> > // Print prints the elements of any slice.
> > // Print has a type parameter T, and has a single (non-type)
> > // parameter s which is a slice of that type parameter.
> > func Print(s []T:type) {
> >
> >
> > This doesn't seem to clash with existing syntax, doesn't require a new
> pair of parenthesis, marks T as a generic type (and can have added
> constraint names right next to it, e.g: Print(s []T:type constraint)
> >
> > Or anything similar really, that keeps the generic type description
> in-line with regular types, e.g. could be a special sigil added to a type
> parameter as well (@T, $T, etc to mark it as generic, e.g.: Print(s []$T
> constraint)
> >
> > haven't thought this through by any means, but it strikes me as a
> cleaner option than a new set of parenthesis and duplication of the generic
> parameter names.
> >
> > Does it make any sense? Don't recall seeing this in some other
> language...
>
> Thanks for the note. It makes sense and offhand I don't see any
> reason why it wouldn't work. But it doesn't seem very Go like. I
> can't think of anything else in the language that works anything like
> that.
>
> Ian
>
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