Unexpected result of IsInstanceOf

[Adam D. Ruppe]

On Friday, 31 January 2020 at 00:51:45 UTC, Ben Jones wrote:
>     writeln(typeof(f3).stringof);
>     writeln(isInstanceOf!(Nullable, f3));

In the first one, you check typeof, but not in the second one.

     writeln(isInstanceOf!(Nullable, typeof(f3))); // true

The template argument there was T above - the type, not the value.