Templates do maybe not need to be that slow (no promises)

[Iakh via Digitalmars-d]

On Friday, 9 September 2016 at 07:56:04 UTC, Stefan Koch wrote:

I was thinking on adding "opaque" attribute for template arguments
to force template to forget some information about type.
E.g if you use

class A(opaque T) {...}

you can use only pointers/references to T.

Probably compiler could determine it by itself is type used
as opaque or not.