Complete Modern C++ - Constant Expressions - constexpr (C++11)

The video tutorial explains the constexpr keyword introduced in C++11, highlighting its ability to evaluate expressions at compile time, thus improving performance. It contrasts constexpr with the constant keyword, emphasizing that not all constants are evaluated at compile time. The tutorial covers how to create constexpr functions, their limitations, and enhancements in C++14. It also discusses practical considerations for using constexpr and constant keywords effectively.

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