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std::future<T>:: operator=

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std::future
future & operator = ( future && other ) noexcept ;
(1) (seit C++11)
future & operator = ( const future & other ) = delete ;
(2) (seit C++11)

Weist den Inhalt eines anderen Future-Objekts zu.

1) Gibt jeden gemeinsamen Zustand frei und weist die Inhalte von other per Move-Operation zu an * this . Nach der Zuweisung gilt other. valid ( ) == false und this - > valid ( ) liefert denselben Wert wie other. valid ( ) vor der Zuweisung.
2) std::future ist nicht CopyAssignable .

Parameter

other - ein std::future , das seinen Zustand an * this übertragen wird

Rückgabewert

* this