operator+(std::reverse_iterator)

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Iterator library

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std::reverse_iterator

Member functions
reverse_iterator::reverse_iterator
reverse_iterator::operator=
reverse_iterator::base
reverse_iterator::operator*reverse_iterator::operator->
reverse_iterator::operator[]
reverse_iterator::operator++reverse_iterator::operator+reverse_iterator::operator+=reverse_iterator::operator--reverse_iterator::operator-reverse_iterator::operator-=
Non-member functions
operator==operator!=operator<operator<=operator>operator>=operator<=> (C++20)
operator+
operator-
iter_move (C++20)
iter_swap (C++20)
make_reverse_iterator (C++14)

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Defined in header`<iterator>`
template<class Iter> reverse_iterator<Iter> operator+ (typename reverse_iterator<Iter>::difference_type n, const reverse_iterator<Iter>& it);		(constexpr since C++17) (until C++23)
template<class Iter> constexpr reverse_iterator<Iter> operator+ (std::iter_difference_t<Iter> n,const reverse_iterator<Iter>& it);		(since C++23)

Returns the iteratorit incremented byn. In fact, the underlying iterator is decremented byn.

[edit]Parameters

n	-	the number of positions to increment the iterator
it	-	the iterator adaptor to increment

[edit]Return value

reverse_iterator<Iter>(it.base()- n)

[edit]Example

Run this code

#include <iostream>#include <iterator>#include <list>#include <vector> int main(){{std::vector v{0,1,2,3};std::reverse_iterator<std::vector<int>::iterator>            ri1{std::reverse_iterator{v.rbegin()}};std::cout<<*ri1<<' ';// 3std::reverse_iterator<std::vector<int>::iterator> ri2{2+ ri1};std::cout<<*ri2<<' ';// 1} {std::list l{5,6,7,8};std::reverse_iterator<std::list<int>::iterator>            ri1{std::reverse_iterator{l.rbegin()}};std::cout<<*ri1<<'\n';// 8//  auto ri2{2 + ri1}; // Error: the underlying iterator does not//        model random access iterator}}

Output:

3 1 8

[edit]See also

operator++operator++(int)operator+=operator+operator--operator--(int)operator-=operator-	advances or decrements the`reverse_iterator` (public member function)[edit]
operator-	computes the distance between two iterator adaptors (function template)[edit]

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operator+(std::reverse_iterator)

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