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Move assignment operator
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<p>In the <a href="/facts/C%252B%252B/Et0F2qn9">C++ programming language</a>, the move assignment operator = is used for transferring a temporary object to an existing object. The move assignment operator, like most C++ operators, can be <a href="/facts/Operator_overloading/hRyHs4Qf">overloaded</a>. Like the <a href="/facts/Copy_assignment_operator/1TsvByvM">copy assignment operator</a> it is a <a href="/facts/Special_member_functions/WQmKXedH">special member function</a>. </p><p>If the move assignment operator is not explicitly defined, the <a href="/facts/Compiler/WNfCDFJe">compiler</a> generates an implicit move assignment operator (<a href="/facts/C%252B%252B11/fI3YCoKQ">C++11</a> and newer) provided that <a href="/facts/Copy_constructor_(C%252B%252B)/16xaBsq8">copy</a>/<a href="/facts/Move_constructor/fI3YCoKQ">move constructors</a>, <a href="/facts/Assignment_operator_(C%252B%252B)/1TsvByvM">copy assignment operator</a> or <a href="/facts/Destructor_(computer_programming)/gr4051ve">destructors</a> have not been declared. The parameter of a move assignment operator is an <a href="/facts/Rvalue_reference/fI3YCoKQ">rvalue reference</a> (T&&) to type <i>T</i>, where <i>T</i> is the object that defines the move assignment operator. The move assignment operator is different than a move constructor because a move assignment operator is called on an existing object, while a move constructor is called on an object created by the operation. Thereafter, the other object's data is no longer valid. </p>