Second CT-Parameter of isRange Predicates

[Jonathan M Davis via Digitalmars-d]

On Tuesday, 3 November 2015 at 01:36:31 UTC, Sebastiaan Koppe 
wrote:
> On Monday, 2 November 2015 at 14:43:00 UTC, Nordlöw wrote:
>> Why not extend existing traits with a second `E`-parameter 
>> instead of adding a new one?
>
> What will E be when you only care whether R is an InputRange 
> and not about its ElementType?

I think that the idea was that we'd keep isInputRange as-is (in 
which case, if you don't care about the element type, then you 
use that), and then we'd add an overload of isInputRange which 
took two arguments where the second argument is the ElementType.

- Jonathan M Davis