What are the performance improvements in C++20?

What are the performance improvements in C++20?

C++20 introduces several performance enhancements, including concepts, ranges, and coroutines, which optimize code execution.

Can you explain how concepts improve performance?

Concepts allow for more precise template programming, reducing the need for SFINAE and improving compile-time checks, which can lead to faster code.

What about the new ranges feature?

Ranges provide a more efficient way to work with sequences of data, allowing for lazy evaluation and reducing unnecessary copies.

Are there any performance drawbacks to using coroutines?

While coroutines can improve performance by allowing asynchronous programming, they may introduce overhead if not used judiciously.

How do these features compare to previous C++ standards?

C++20 features are designed to simplify code and improve performance compared to C++11 and C++14, making it easier to write efficient programs.