Version block "conditions" with logical operators

[Andrei Alexandrescu via Digitalmars-d]

On 5/10/16 2:48 PM, Tomer Filiba wrote:
> On Tuesday, 10 May 2016 at 11:12:58 UTC, Tomer Filiba wrote:
>> Alternatively, an isVersion(x) predicate that I could use in a static
>> if could do the trick
>
> Well, I've come up with
>
> template isVersion(string ver) {
>      mixin(format(q{
>          version(%s) {
>              enum isVersion = true;
>          }
>          else {
>              enum isVersion = false;
>          }
>      }, ver));
> }
>
> pragma(msg, isVersion!"foo");     // false
> pragma(msg, isVersion!"assert");  // true
>
> But it feels hackish too

Not if we put it in the standard library :o). -- Andrei