What are the standard views in C++20?

Can you explain what standard views are in C++20?

Standard views in C++20 provide a way to create lightweight, non-owning views over sequences of data, allowing for more flexible data manipulation.

How do I use views with vectors?

You can use views with vectors by including the <ranges> header and applying views like views::filter or views::transform to your vector.

Can you give me an example of using a filter view?

Sure! Here's a simple example: auto even_numbers = my_vector | views::filter([](int n) { return n % 2 == 0; }); This creates a view of only the even numbers.

What are the benefits of using views?

Views are efficient as they do not copy data, they allow for lazy evaluation, and they can be easily composed to create complex data transformations.