Help with specific template function

[aliak]

On Sunday, 25 March 2018 at 19:06:14 UTC, Vladimirs Nordholm 
wrote:
> On Sunday, 25 March 2018 at 18:24:37 UTC, Vladimirs Nordholm 
> wrote:
>> The underlying problems are:
>> * How do I ensure the two first arguments (used as 
>> coordinates) are types of numbers (all kinds: ints, floats, 
>> reals, etc.)
>> * At least one argument is passed after the coordinates
>
> I found a solution which satisfies my needs :)
>
>     void foo(X, Y, Args...)(X x, Y y, Args args)
>     if (__traits(isArithmetic, x) && __traits(isArithmetic, y) 
> && args.length >= 1)
>     {
>         // ...
>     }

FYI there's also 
https://dlang.org/library/std/traits/is_numeric.html incase you 
haven't see it -takes in to account bools and chars, which 
depending on your usecase you may not want to count as arithmetic.

Cheers
- Ali