[EMCpp]Item-27 Alternatives to Overloading on Universal References
· β 5 min read
Universal reference parameters often have efficiency advantages, but they typically have usability disadvantages.
Coding
[EMCpp]Item-26 Avoid Overloading on Universal References
· β 4 min read
Overloading on universal references almost always leads to the universal reference overload being called more frequently than expected.
[EMCpp]Item-25 Use std::move on Rvalue References, std::forward on Universal References
· β 4 min read
But don’t apply std::move or std::forward to local objects if they would otherwise be eligible for the return value optimization.
[EMCpp]Item-24 Distinguish Universal References From Rvalue References
· β 3 min read
If a function template parameter has type T&& for a deduced type T, or if an object is declared using auto&&, the parameter or object is a universal reference.
[EMCpp]Item-23 Understand std::Move and std::Forward
· β 2 min read
std::move performs an unconditional cast to an rvalue, while std::forward casts its argument to an rvalue only if that argument is bound to an rvalue.
