std::ranges::zip_view<Views...>::iterator - cppreference.com

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template< bool Const > class /iterator/;		(exposition only*)

The iterator type of a possibly const-qualified zip_view, returned by zip_view::begin and in certain cases by zip_view::end.

The type /*iterator*/<true> or /*iterator*/<false> treats the underlying views as const-qualified or non-const-qualified respectively.

Member	Definition
`iterator_concept`	std::random_access_iterator_tag if `all-random-access<Const, Views...>` is `true`, otherwise std::bidirectional_iterator_tag if `all-bidirectional<Const, Views...>` is `true`, otherwise std::forward_iterator_tag if `all-forward<Const, Views...>` is `true`, otherwise std::input_iterator_tag.
`iterator_category` (conditionally present)	std::input_iterator_tag if `all-forward<Const, Views...>` is `true`, not defined otherwise.
`value_type`	`std::tuple<ranges::range_value_t<Views>...>` if `Const` is `false`, `std::tuple<ranges::range_value_t<const Views>...>` otherwise.
`difference_type`	`std::common_type_t<ranges::range_difference_t<Views>...>` if `Const` is `false`, `std::common_type_t<ranges::range_difference_t<const Views>...>` otherwise.

Member	Definition
`current_` (private)	`std::tuple<ranges::iterator_t<Views>...>` if `Const` is `false`, or `std::tuple<ranges::iterator_t<const Views>...>` otherwise. (exposition-only member object*)