What is exception safety in C++?

What is exception safety in C++?

Exception safety refers to the guarantees that a function provides when an exception is thrown. It ensures that resources are managed properly and that the program remains in a valid state.

Can you explain the different levels of exception safety?

Sure! There are three main levels: no-throw guarantee, strong guarantee, and basic guarantee. Each level defines how the function behaves in the event of an exception.

What is the no-throw guarantee?

The no-throw guarantee means that a function will not throw any exceptions. If it does, it indicates a serious error in the code.

How can I implement exception safety in my code?

You can implement exception safety by using RAII (Resource Acquisition Is Initialization), smart pointers, and ensuring that your functions adhere to the guarantees.

Are there any best practices for writing exception-safe code?

Yes, some best practices include using standard library containers, avoiding raw pointers, and writing small, focused functions that handle exceptions properly.