C++11 rvalue and rvalue reference
In C++, an rvalue refers to a temporary value that does not have a persistent identity and is typically created during expressions or as the result of a function call. An rvalue can be a literal (e.g., numeric constant), a temporary object, or the result of an expression evaluation. An rvalue reference, denoted by &&, is a special type of reference that can bind to an rvalue. It was introduced in C++11 and allows for the creation of move semantics, which enables more efficient resource management and improved performance. Here are the key points to understand about rvalues and rvalue references: Rvalue: An rvalue is a temporary value that can be moved from or used to initialize other objects. It does not have a persistent identity and is typically short-lived. Lvalue: An lvalue refers to an object that has a persistent identity and is typically addressable. It can appear on the left side of an assignment operation. Rvalue Reference: An rvalue reference (&&) is a r...