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There are two destructor calls because there are two objects the argument to push_back, and the newly added element within vector t STL containers store copies. In your example the element added to the vector by push_back is copy constructed from the argument passed to push_back.The argument is A , which is a temporary object, see here variant . .

There are two destructor calls because there are two objects the argument to push_back, and the newly added element within vector t STL containers store copies. In your example the element added to the vector by push_back is copy constructed from the argument passed to push_back.The argument is A , which is a temporary object, see here variant . .

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  • C Why Is The Destructor Of The Class Called Twice

    There are two destructor calls because there are two objects the argument to push_back, and the newly added element within vector t STL containers store copies. In your example the element added to the vector by push_back is copy constructed from the argument passed to push_back.The argument is A , which is a temporary object, see here variant . .