How to avoid code duplication in static if branches?

["Jérôme M. Berger"]

Andrej Mitrovic wrote:
> ...snip...
> I want to avoid writing "check()" twice. I only have to statically
> check a field of a member if it's of a certain type (Foo).
> 
> One solution would be to use a boolean:
> void test(T)(T t)
> {
>     bool isTrue = true;
>     static if (is(T == Foo))
>         isTrue = t.isTrue;
> 
>     if (isTrue)
>         check();
> }
> 
> But that kind of defeats the purpose of static if (avoiding runtime
> overhead). Does anyone have a trick up their sleeve for these types of
> situations? :)

	There's always this:

void test(T)(T t)
{
   static if (is (T == Foo))
      if (!t.isTrue)
         return;

   check();
}

		Jerome
-- 
mailto:jeberger at free.fr
http://jeberger.free.fr
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