Move Semantics
We will talk about properties of the move semantic in this lesson that are not mentioned as often.
We'll cover the following...
Containers of the STL can have non-movable elements. The copy semantic is the fallback for the move semantic.
Let’s learn more about the move semantic.
std::move
The function std::move moves its resource.
- Needs the header
<utility>. - Converts the type of its argument into a rvalue reference.
- The compiler applies the move semantic to the rvalue reference.
- Is a
static_castto a rvalue reference under the hood.
static_cast<std::remove_reference<decltype(arg)>::type&&>(arg);
- What is happening here?