Difference between Copy assignment operator vs Move assignment operator
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| Copy Assignment Operators | Move Assignment Operators |
| Copy assignment operator takes lvalue reference as an argument. | Move assignment operator takes rvalue reference as argument. |
| Copy assignment operator create a new object from passed object by copying each and every item into a new memory location. | Move assignment operator create a new object by using as much memory from passed object. |
| Since, copy assignment operator use a lot of new memory allocation(for new object). Hence, copy constructors gives bad performance compared to move constructors | Since, move assignment operator use most of memory blocks from passed object. Hence, move constructors gave better performance compared to copy constructors. |
| Since, copy assignment operator doesn’t make any change to passed object. Hence, passed object can be used after copy operations also. | Since, move assignment operator utilizes memory blocks from passed object. Hence, passed object can’t be used after move operations. |
For more information related to move assignment operators click here.