What are some common exception handling mistakes in C++?

What are some common exception handling mistakes in C++?

Some common mistakes include not catching exceptions, catching by value instead of reference, and failing to rethrow exceptions.

Can you explain why catching by value is a mistake?

Catching by value can lead to unnecessary object copies, which can be inefficient and may lose the original exception's context.

What should I do instead?

You should catch exceptions by reference, using catch (const ExceptionType& e) to avoid copying and maintain the original exception.

Are there any other best practices I should follow?

Yes, always ensure that your catch blocks are specific, use std::exception for generic handling, and avoid empty catch blocks.