O_o
Well, it is true that friendship could be avoided altogether. What you quoted says as much.
However, the rest of that isn't really relevant in the context of operator overloads unless you...
Type: Posts; User: phantomotap
O_o
Well, it is true that friendship could be avoided altogether. What you quoted says as much.
However, the rest of that isn't really relevant in the context of operator overloads unless you...
It seems perfectly likely to me.
Even the one temporary, assuming "RVO" here, would be more expensive than creating none simply because the normal constructor was designed to be expensive.
The...
O_o
It should be noted that if the code in post #6 appropriately satisfies what you query in post #3 then the `std::vector<double>' instance `vx' is probably not part of state that is normally...