Re: cannot cast

[Namespace]

On Thursday, 3 May 2012 at 07:41:32 UTC, Simen Kjaeraas wrote:
On Thu, 03 May 2012 00:38:35 +0200, Namespace 
<rswhi...@googlemail.com> wrote:

I'm not very skillful in such "template" stories. Maybe 
someone can help me?

The main problem here is your opCast is non-const. (it's always 
an indication of
const problems when DMD says "<X> is not callable using 
argument types ()")

Solution:

class A {
    int val;

    alias val this;

    T opCast(T : Object)() {
        writeln("FOO");

        return to!(T)(this);
    }

    // Add this
    T opCast(T : Object)() const {
        writeln("FOO");

        return to!(T)(this);
    }
}

My tests are failed, but isn't it possible, to reduce both 
methods to one with the inout keyword?