Could we reserve void[T] for builtin set of T ?

[Walter Bright via Digitalmars-d]

On 3/31/2016 12:58 PM, H. S. Teoh via Digitalmars-d wrote:
> How is this different from bool[T] then? Just the fact that you can't
> get a reference to the bool?

Differences are:

1. it uses less storage, as the bool is implied
2. you cannot have a key in the set that has an associated value of false
3. as you said, you cannot get a reference to the bool (because it is implied)