[core.reflect] TemplateInstance reflection

[jmh530]

On Thursday, 30 September 2021 at 22:19:33 UTC, Stefan Koch wrote:
> [snip]

In the code below you can only get the target of the alias, such 
as int and float. Would it be possible to use core.reflect or 
something similar, to be able to get back Foo or Foo!int?

```d
template Foo(T)
{
     static if(is(T == int))
         alias Foo = int;
     else
         alias Foo = float;
}

void main() {
     Foo!int x;
     Foo!double y;
     static assert(is(typeof(x) == int));
     static assert(is(typeof(y) == float));
}
```