31 Input/output library [input.output]

31.12 File systems [filesystems]

31.12.12 Class recursive_directory_iterator [fs.class.rec.dir.itr]

31.12.12.3 Non-member functions [fs.rec.dir.itr.nonmembers]

These functions enable use of recursive_directory_iterator with range-based for statements.
recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept;
Returns: iter.
recursive_directory_iterator end(recursive_directory_iterator) noexcept;
Returns: recursive_directory_iterator().