What are the throw specifications in C++11?

What are the throw specifications in C++11?

In C++11, throw specifications were introduced to specify which exceptions a function might throw. However, they are deprecated in C++11 and removed in C++17.

Can you explain how to use noexcept instead?

Sure! The noexcept specifier indicates whether a function is allowed to throw exceptions. If a function is marked as noexcept, it guarantees that it will not throw any exceptions.

What happens if a noexcept function throws an exception?

If a noexcept function throws an exception, the program will call std::terminate, leading to program termination.

Are there any best practices for using noexcept?

Yes, it's best to use noexcept for functions that are not expected to throw, especially in performance-critical code, to avoid unnecessary overhead.