An Introduction to the Ranges Library

The previous section was dedicated to understanding the three main pillars of the standard library: containers, iterators, and algorithms. Throughout that section, we used the abstract concept of range to represent a sequence of elements delimited by two iterators. The C++20 standard makes it easier to work with ranges by providing a ranges library consisting of two main parts: on one hand, types that define nonowning ranges and adaptations of ranges, and on the other hand, algorithms that work with these range types and don’t require iterators to define a range of elements.

Overview of the ranges library