What are promises in C++?

Can you explain what promises are in C++?

Sure! In C++, a promise is a mechanism that allows you to retrieve a value that will be available in the future, typically used in asynchronous programming.

How do I create a promise in C++?

You can create a promise using the std::promise class. Here's a simple example: std::promise<int> myPromise;.

What is the difference between promise and future?

A promise is used to set a value, while a future is used to retrieve that value. They work together to handle asynchronous tasks.

Can promises be used with threads?

Yes, promises are often used with threads to synchronize data between them, allowing one thread to set a value while another retrieves it.