Square brackets work great. Scala uses them for generics to great effect.
They also make me think of Clojure, which introduced them to Lisp for
similar reasons to here - to avoid too much overload of regular parentheses
- and which people have been very happy with.
On Wednesday, 15 July 2020 at 08:37:15 UTC+1 ba...@iitbombay.org wrote:
> As I wrote, parentheses are not needed for the common case of single type
> parameter. If you have more than one, you need parentheses but note that
> this
> is a *prefix* and any parsing ambiguities can removed by using a - if
> needed.
> For your example it will be something like
>
> (float64,int)PowN(1.2, 3)
>
> It’s just a syntax change. There is zero semantic difference from the
> current
> proposal. I just tried to get idea across - I can work out a complete set
> of
> syntax rule changes if there is sufficient interest but the gen rule will
> be
> something like
>
> gen-type-decl: gen-prefix type-decl;
> gen-func-decl: gen-prefix func-decl;
> gen-prefix: “gen” typeX-list
> typeX-list: typeX | typeX-list “,” typeX ;
> typeX: NAME [constraint] ;
>
> > On Jul 15, 2020, at 12:01 AM, 'Dan Kortschak' via golang-nuts <
> golan...@googlegroups.com> wrote:
> >
> > How do these deal with non-type determined uses. Say you have (by any
> > spelling)
> >
> > gen F,I func PowN(a F, b I) F {...}
> >
> > How do you specify the type of F or I when say you have untyped
> > constants. This still requires parens or other markings to indicate the
> > actual types of F and I. It seems many of the comments here complaining
> > about brackets and such are ignoring this aspect of the current
> > proposal.
>
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