What is the performance impact of exceptions in C++20?

What is the performance impact of exceptions in C++20?

In C++20, the performance impact of exceptions is generally reduced due to improved optimizations. However, it still depends on how exceptions are used in your code.

Can you explain how these optimizations work?

Sure! C++20 introduces features like 'noexcept' specifications, which allow the compiler to optimize code paths that don't throw exceptions, leading to better performance.

Are there any scenarios where exceptions can still be costly?

Yes, exceptions can be costly in scenarios where they are frequently thrown and caught, especially in performance-critical sections of code.

What are some best practices for using exceptions in C++20?

Best practices include using 'noexcept' where possible, minimizing the use of exceptions in performance-critical code, and ensuring exceptions are used for exceptional cases only.