Move assignment operator: Difference between revisions

Revision as of 16:45, 29 February 2016

Revision as of 16:45, 29 February 2016

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{{copy edit|date=February 2016}}

yoIn mamahethe [[C++|C++ programming language]], the move assignment operator <code>=</code>, is used for transferring ownership (moving) of a temporary object to another existing object. The move assignment operator, like most of the other C++ operators, can be [[Operator overloading|overloaded]]. It is one the of the [[special member functions]].<ref>{{Cite journal|title = Special member functions|url = https://en.wikipedia.org/w/index.php?title=Special_member_functions&oldid=662581955|journal = Wikipedia, the free encyclopedia|language = en}}</ref>

If the move assignment operator is not explicitly defined, then the compiler will generate an implicit move assignment operator ([[C++11]] and newer). The parameter of a move assignment operator is an [[rvalue reference]] (T&&) to type ''T'', ''T'' being 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 would be called on an object being created. One must also signify that the other object's data is not valid anymore, and has been moved.