Rvalue References Overview
Rvalue references, introduced in C++11, use the syntax T&&. They allow functions to distinguish between lvalues and rvalues, enabling move semantics.
main.cpp
12345678910111213141516171819#include <iostream> void process(int& x) { std::cout << "Lvalue reference called with " << x << std::endl; } void process(int&& x) { std::cout << "Rvalue reference called with " << x << std::endl; } int main() { int a = 42; process(a); // lvalue, calls process(int&) process(99); // rvalue, calls process(int&&) process(std::move(a)); // rvalue, calls process(int&&) }
Notice in the example above how the function overloads are selected based on whether the argument is an lvalue or an rvalue. This distinction is the foundation for move semantics.
¡Gracias por tus comentarios!
Pregunte a AI
Pregunte a AI
Pregunte lo que quiera o pruebe una de las preguntas sugeridas para comenzar nuestra charla
Genial!
Completion tasa mejorada a 10Rvalue References Overview
Desliza para mostrar el menú
Rvalue references, introduced in C++11, use the syntax T&&. They allow functions to distinguish between lvalues and rvalues, enabling move semantics.
main.cpp
12345678910111213141516171819#include <iostream> void process(int& x) { std::cout << "Lvalue reference called with " << x << std::endl; } void process(int&& x) { std::cout << "Rvalue reference called with " << x << std::endl; } int main() { int a = 42; process(a); // lvalue, calls process(int&) process(99); // rvalue, calls process(int&&) process(std::move(a)); // rvalue, calls process(int&&) }
Notice in the example above how the function overloads are selected based on whether the argument is an lvalue or an rvalue. This distinction is the foundation for move semantics.
¡Gracias por tus comentarios!
