< cpp‎ | ranges‎ | join view
Ranges library
Range access
Range conversions
Range primitives
Dangling iterator handling
Range concepts

Range adaptor objects
Range adaptor closure objects
Helper items
template< bool Const >
class /*iterator*/
(since C++20)

The return type of join_view::begin, and of join_view::end when both the outer range V and the inner range ranges::range_reference_t<V> satisfy common_range and the parent join_view is a forward_range.

If V is not a simple view (e.g. if ranges::iterator_t<const V> is invalid or different from ranges::iterator_t<V>), Const is true for iterators returned from the const overloads, and false otherwise. If V is a simple view, Const is true if and only if ranges::range_reference_t<V> is a reference.

The name of this class template (shown here as /*iterator*/) is unspecified.


[edit] Member types

Member type Definition
Parent (private) const join_view<V> if Const is true, otherwise join_view<V>. The name is for exposition only.
Base (private) const V if Const is true, otherwise V. The name is for exposition only.
OuterIter (private) ranges::iterator_t<Base>. The name is for exposition only.
InnerIter (private) ranges::iterator_t<ranges::range_reference_t<Base>>. The name is for exposition only.
iterator_category Defined only if iterator::iterator_concept (see above) denotes std::forward_iterator_tag.

Let OUTERC be std::iterator_traits<ranges::iterator_t<Base>>::iterator_category, and let INNERC be std::iterator_traits<ranges::iterator_t<ranges::range_reference_t<Base>>>::iterator_category.

value_type ranges::range_value_t<ranges::range_reference_t<Base>>


[edit] Member objects

Member name Definition
outer_ (private) an object of type OuterIter. The name is for exposition only.
inner_ (private) an object of type InnerIter. The name is for exposition only.
parent_ (private) an object of type Parent. The name is for exposition only.

[edit] Member functions

constructs an iterator
(public member function)
accesses the element
(public member function)
advances or decrements the underlying iterators
(public member function)
skips over empty inner ranges; the name is for exposition only
(exposition-only member function)

[edit] Non-member functions

compares the underlying iterators
casts the result of dereferencing the underlying iterator to its associated rvalue reference type
swaps the objects pointed to by two underlying iterators