isInputRange as a __traits ?

[Computermatronic]

On Saturday, 7 October 2017 at 10:31:01 UTC, user1234 wrote:
> Since the compiler has the ability to detect input ranges in 
> the foreach aggregate that are aggregates implementing the 
> right primitives, why don't you set the widely used 
> std.range.isInputRange as a __trait, e.g __traits(isInputRange, 
> Stuff) ?

Because the __traits expression is supposed to be a fallback in 
place of where std.traits cannot be used, and should see minimum 
use.