Why doesn't this C++0x code call the move constructor?

Question

For some reason, the following code never calls Event::Event(Event&& e)

Event a;
Event b;
Event temp;
temp = move(a);
a = move(b);
b = m         


        

Answer 1

You are not using the move constructor. I think swap is implemented something like this

Event a;
Event b;

Event temp(move(a)); // this one wants to use a move constructor
a = move(b);
b = move(temp);

You want to use the move assignment operator, which doesn't exist in your code, so it falls back to the copy assignment operator.