Value Categories (L-Values and R-Values)

A straightforward guide to l-values and r-values, aimed at helping you understand the fundamentals

Ryan McCombe
Updated
Hello! I'm here to help you with any questions about this lesson. Feel free to ask me anything - whether it's about specific concepts, examples, or how to apply what you've learned!

Questions & Answers

Answers are generated by AI models and may not have been reviewed. Be mindful when running any code on your device.

Accepting L-value References to Const
Why should we pass by const l-value reference when we don't intend to modify the object?
Returning L-value References from Functions
When is it appropriate to return an l-value reference from a function?
Using R-value References for Function Overloading
How can r-value references be used to provide different implementations of a function based on the value category of the argument?
Move Semantics and Performance Optimization
How can move semantics improve the performance of my C++ code?
std::move vs static_cast
What are the differences between using std::move and static_cast for casting to r-value references?
Using R-value References in Function Templates
How can I use r-value references in function templates to optimize code based on the value category of the arguments?