operator+,-(ranges::transform_view::iterator)

 

C++

Language

Standard Library Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Technical Specifications

 

Ranges library

Range access
begin cbegin end cend	rbegin crbegin rend crend	size ssize data cdata	empty
Range primitives
iterator_tsentinel_t	range_size_trange_difference_t	range_value_t	range_reference_trange_rvalue_reference_t
Dangling iterator handling
dangling	borrowed_iterator_t	borrowed_subrange_t
Range concepts
range borrowed_range sized_range	common_range view viewable_range	input_range output_range forward_range	bidirectional_range random_access_range contiguous_range
Views
view_interface	subrange
Semiregular wrapper
Factories
empty_viewviews::empty	single_viewviews::single	iota_viewviews::iota	views::counted
Adaptors
views::all_tviews::all join_viewviews::join take_viewviews::take basic_istream_viewistream_view	ref_view                                split_viewviews::split take_while_viewviews::take_while elements_viewviews::elements	common_viewviews::common transform_viewviews::transform drop_viewviews::drop keys_viewviews::keys	reverse_viewviews::reverse filter_viewviews::filter drop_while_viewviews::drop_while values_viewviews::values

 

std::ranges::transform_view

Member functions

transform_view::transform_view

transform_view::base

transform_view::begin

transform_view::end

transform_view::size

Deduction guides

Iterator

transform_view::iterator::iterator

transform_view::iterator::base

transform_view::iterator::operator*

transform_view::iterator::operator[]

transform_view::iterator::operator++ transform_view::iterator::operator++(int) transform_view::iterator::operator-- transform_view::iterator::operator--(int) transform_view::iterator::operator+= transform_view::iterator::operator-=

operator==(transform_view::iterator) operator<(transform_view::iterator) operator>(transform_view::iterator) operator<=(transform_view::iterator) operator>=(transform_view::iterator) operator<=>(transform_view::iterator)

operator+(transform_view::iterator) operator-(transform_view::iterator)

iter_move(transform_view::iterator)

iter_swap(transform_view::iterator)

Sentinel

transform_view::sentinel::sentinel

transform_view::sentinel::base

operator==(transform_view::iterator,transform_view::sentinel)

operator-(transform_view::iterator,transform_view::sentinel)

 

friend constexpr /*iterator*/ operator+( /*iterator*/ i, difference_type n )     requires ranges::random_access_range<Base>;	(1)	(since C++20)
friend constexpr /*iterator*/ operator+( difference_type n, /*iterator*/ i )     requires ranges::random_access_range<Base>;	(2)	(since C++20)
friend constexpr /*iterator*/ operator-( /*iterator*/ i, difference_type n )     requires ranges::random_access_range<Base>;	(3)	(since C++20)
friend constexpr difference_type operator-( const /*iterator*/& x,                                             const /*iterator*/& y )     requires ranges::random_access_range<Base>;	(4)	(since C++20)

1,2) Returns the iterator i incremented by n.

3) Returns the iterator i decremented by n.

4) Returns the distance between x and y.

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when transform_view::iterator<Const> is an associated class of the arguments.

Return value

Let parent_ denote the pointer to the parent transform_view, current_ denote the underlying iterator.

1,2) /*iterator*/{*i.parent_, i.current_ + n}

3) /*iterator*/{*i.parent_, i.current_ - n}

4) x.current_ - y.current_