What are the key features introduced in C++20 compared to C++17?

What are the key features introduced in C++20 compared to C++17?

C++20 introduced several significant features, including concepts, ranges, and coroutines. Concepts allow for more expressive template constraints, while ranges provide a new way to work with sequences of data. Coroutines enable asynchronous programming more naturally.

Can you explain what concepts are in C++20?

Sure! Concepts are a way to specify constraints on template parameters. They allow you to define requirements that types must meet to be used with a template, improving code readability and error messages.

What are ranges and how do they improve C++ programming?

Ranges provide a new way to work with collections of data by allowing you to express algorithms in a more readable and concise manner. They enable lazy evaluation and can work seamlessly with standard algorithms.

What are coroutines and when should I use them?

Coroutines are a feature that allows functions to be paused and resumed, making it easier to write asynchronous code. You should use them when you need to handle tasks that can be paused, like I/O operations or long-running computations.