Understanding Ranges Views and View Adaptors Objects in C++20/C++23

2023/07/31

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The article provides an explanation of ranges::reverse_view and std::views::reverse in C++20/C++23. It compares the two to understand the differences between views and their adaptor objects. The ranges::reverse_view is a range adaptor representing a view of an underlying range in reversed order. It provides member functions such as constructor, base, begin, end, and size. On the other hand, std::views::reverse is a range adaptor object that unwraps reversed views if possible. The article also dives into the implementation of these features, discussing strategies for efficient range reversal. It highlights the differences between the two approaches and provides use cases for developers to consider. Overall, the article offers insights into working with ranges and view adaptors in C++20/C++23.