Question

Not certain how I am to interprete the above.

no match for ‘operator!=’ in ‘this != rhs’|
Error| invalid initialization of non-const reference of type ‘Collection&’ from an rvalue of type ‘Collection* {aka Collection*}’|

I have two methods where one calls another. However,when I run the code, as is, I get the error messages above.

Collection&  Collection::operator=(const Collection&& rhs)
        {
                   if (this!= rhs)// <--- Error |no match for 'operator!=' in 'this != rhs'
                    {
                        return copy(rhs);//<---Error| invalid initialization of non-const reference of type 'Collection&' from an rvalue of type 'Collection* {aka Collection*}'
                    }
                    return *this;
         }

Collection& Collection::copy(const Collection& coll)
{

}

Answer 1

this is a Collection*, and rhs is const Collection&&. You can’t != between them. You should convert rhs to a const Collection* via &rhs.

if (this!= &rhs)

Better yet, write an assignment operator where it doesn’t matter if you try self assignment.