struct A {
    A( bool b )
        : b_( b )
    { }

    operator int () {
        return b_ ? 0 : 1;
    }

    operator bool () {
        return b_;
    }

    bool b_;
};

int main() {
    A a( true );;

    // see 13.6 Built-in operators
    // operator == only exists for promoted arithmetic types
    if( a == true ) return 1;
// Error: ambiguous type conversion
    if( a == 1 ) return 1;
// Error: ambiguous type conversion

    return 0;
}


bye, Christof

-- 
http://cmeerw.org                                 JID: cmeerw@jabber.at mailto cmeerw at web.de

...and what have you contributed to the Net?