Neater "not version (...)" ?

[Simen Kjærås]

On Wednesday, 16 September 2020 at 19:04:24 UTC, Vladimirs 
Nordholm wrote:
> On Wednesday, 16 September 2020 at 18:54:45 UTC, Jacob Carlborg 
> wrote:
>> version (Windows)
>>     enum windows = true;
>> else
>>     enum windows = false;
>>
>> static if (!windows)
>> {
>>     // ... my code
>> }
>
> Ah, I guess it boils down to this then. Doesn't really make it 
> "neater", but thank you for the tip!

I wrote this helper a little while back:

struct Version {
     template opDispatch(string name) {
         mixin("version ("~name~") enum opDispatch = true; else 
enum opDispatch = false;");
     }
}

static if (Version.Windows) pragma(msg, "Windows machine");
static if (Version.linux) pragma(msg, "Linux machine");

Note that it only works for global versions, and those defined in 
the same module as Version.

--
   Simen