Syntax of isExpression

[Ali Çehreli via Digitalmars-d-learn]

On 01/31/2017 02:49 AM, Alex wrote:

 >     auto r = E!(int, myType.a, true)();

 >     static if (is(T : TX!TL, alias TX, TL...))
 >     {
 >         writeln(is(TL[0] == int));
 >         writeln(typeid(TL[1]));
 >         writeln(typeid(TL[2]));
 >         writeln(is(TL[2] == bool));
 >     }

That's because 'true' is not the type 'bool' but a value of bool. You 
can ask whether the type of a value is bool:

         writeln(is(typeof(TL[2]) == bool));

But then it fails for the Tuple case because typeof(bool) is not bool in 
that case. You need to cover all cases if both 'bool' and 'true' mean 
the same thing for you.

Ali