std::ranges::transform_view::iterator(3)

NAME
std::ranges::transform_view::iterator - std::ranges::transform_view::iterator

Synopsis
   template< bool Const > (since C++20)
   class /*iterator*/
   The return type of transform_view::begin, and of transform_view::end when the
   underlying view is a common_range.
   The type /*iterator*/<true> is returned by the const-qualified overloads. The type
   /*iterator*/<false> is returned by the non-const-qualified overloads.
   The name of this class template (shown here as iterator) is unspecified.
   Typical implementation holds two data members: an iterator into (possibly
   const-qualified) V, and a pointer to parent transform_view.

Member types
   Member type Definition
   Parent (private) const ranges::transform_view<V, F> if Const is true, otherwise
                     ranges::transform_view<V, F>. The name is for exposition only.
   Base (private) const V if Const is true, otherwise V. The name is for exposition
                     only.
                     std::random_access_iterator_tag if Base models
                     random_access_range,
   iterator_concept std::bidirectional_iterator_tag if Base models
                     bidirectional_range,
                     std::forward_iterator_tag if Base models forward_range,
                     std::input_iterator_tag otherwise.
                     Not defined if Base does not model forward_range.
                     Otherwise, if std::invoke_result_t<F&,
                     ranges::range_reference_t<Base>> is not an lvalue reference,
                     std::input_iterator_tag.
   iterator_category
                     Else, let C be
                     std::iterator_traits<ranges::iterator_t<Base>>::iterator_category.
                     If C is std::contiguous_iterator_tag, the type is
                     std::random_access_iterator_tag; otherwise, the type is C.
   value_type std::remove_cvref_t<std::invoke_result_t<F&,
                     ranges::range_reference_t<Base>>>
   difference_type ranges::range_difference_t<Base>

Member functions
   constructor constructs an iterator
   (C++20) (public member function)
   base returns the underlying iterator
   (C++20) (public member function)
   operator* accesses the transformed element
   (C++20) (public member function)
   operator[] accesses an element by index
   (C++20) (public member function)
   operator++
   operator++(int)
   operator-- advances or decrements the underlying iterator
   operator--(int) (public member function)
   operator+=
   operator-=
   (C++20)

Non-member functions
   operator==
   operator<
   operator> compares the underlying iterators
   operator<= (function)
   operator>=
   operator<=>
   (C++20)
   operator+ performs iterator arithmetic
   operator- (function)
   (C++20)
   iter_move obtains an rvalue reference to the transformed element
   (C++20) (function)
  Defect reports
   The following behavior-changing defect reports were applied retroactively to
   previously published C++ standards.
      DR Applied to Behavior as published Correct behavior
   P2259R1 C++20 member iterator_category is always defined only if Base models
                       defined forward_range
   LWG 3555 C++20 the definition of iterator_concept made to consider
                       ignores const