Feb 5, 2022 · Fundamentals

Understanding && in C++: Rvalue References, Forwarding References, and Their Use as Function Parameters

The article explains the different meanings of the && operator in C++—as a true rvalue reference in non‑template functions, as a forwarding (universal) reference in templates, and its behavior when binding to function return values—illustrated with code examples and practical guidelines.

C++Function Parametersforwarding reference

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Understanding && in C++: Rvalue References, Forwarding References, and Their Use as Function Parameters