What are const rvalue references in C++11?

What are const rvalue references in C++11?

Const rvalue references are a new feature in C++11 that allow you to bind a temporary object to a const reference.

Can you give me an example of how to use const rvalue references?

Sure! Here's a simple example:

void process(const std::string&& str) {
    // Do something with str
}

process("Hello, World!");

What are the benefits of using const rvalue references?

They allow for more efficient code by enabling move semantics, which can reduce unnecessary copying of objects.

Are there any drawbacks to using them?

One drawback is that you cannot bind a non-const lvalue to a const rvalue reference, which can limit flexibility.