Template overloads involving `string` and `char[constant]` return value

[Adam D. Ruppe via Digitalmars-d-learn]

On Wednesday, 21 September 2016 at 12:29:54 UTC, Johan Engelen 
wrote:
> Wouldn't something like this be possible?
>
> `T toHexString(string toHexString(Order order = 
> Order.increasing, LetterCase letterCase = LetterCase.upper, 
> T)(.........) if (T == string)`

I'm not sure what that's supposed to be.... but in any case, 
you'd still need to specify T somewhere in the call, the variable 
you are assigning the result to never does anything with regard 
to overloads or template args.