To summarize the thread so far:

- parenthesis is a no-no
- angle brackets are popular/common but that alone doesn't make good
argument. some languages have already deviated. scala is popular, uses
square instead of angle brackets.
- go's current pseudo-generic data structure, the map, already uses the
square bracket (e.g. map[int]int), a vote for square brackets. internal
syntax consistency is key.

On Wed 15 Jul 2020 at 23:04 'Dan Kortschak' via golang-nuts <
golang-nuts@googlegroups.com> wrote:

> On Wed, 2020-07-15 at 14:36 -0700, Randall O'Reilly wrote:
> > And the use of [ ] in map is more semantically associated with its
> > conventional use as an element accessor in arrays / slices, not with
> > some more general kind of type parameter.
>
> The [] syntax can be viewed as an indexing operation perfectly well in
> the context of generics; a generic function or type is a map of
> implementations or types and so the [] syntax is a type index into that
> map, just as map[T1]T2 is a type index into the builtin generic map
> type. This is not mental stretch.
>
>
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