What is std::exception_ptr in C++11?

Can you explain what std::exception_ptr is in C++11?

Sure! std::exception_ptr is a smart pointer that holds a copy of an exception object. It allows you to store exceptions that occur in one thread and rethrow them in another.

How does it differ from std::exception?

std::exception is a base class for all standard exceptions, while std::exception_ptr is specifically designed to capture and manage exceptions across threads.

Can you give me an example of how to use std::exception_ptr?

Certainly! You can use std::make_exception_ptr to create an exception pointer when an exception is thrown, and then use std::rethrow_exception to throw it again in another thread.

What are the benefits of using std::exception_ptr?

The main benefits are improved exception handling in multi-threaded applications and the ability to propagate exceptions without losing their context.