Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is an older version of Boost and was released in 2024. The current version is 1.89.0.

row::const_iterator

A random access iterator to an element.

using const_iterator = iterator;

The exact type of the iterator is unspecified.