(Easy) An assignment operator should really return T& to enable chaining, not solutions like const T& which interfere with composability and Placing objects in containers. The works by using with the double-checked locking sample that aren't in violation of CP.110: Do not produce your personal double-checked locking for initialization http://computer-science-assignme27924.look4blog.com/8339857/the-greatest-guide-to-c-programming-assignment-help