std::make_reverse_iterator

 

C++

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Language support library

Concepts library (C++20)

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Regular expressions library (C++11)

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Technical Specifications

 

Iterator library

Iterator primitives
iterator_traits
input_iterator_tagoutput_iterator_tagforward_iterator_tagbidirectional_iterator_tagrandom_access_iterator_tag
iterator
Iterator adaptors
reverse_iterator move_iterator (C++11) back_insert_iterator front_insert_iterator insert_iterator	make_reverse_iterator (C++14) make_move_iterator (C++11) back_inserter front_inserter inserter
Stream iterators
istream_iterator
ostream_iterator
istreambuf_iterator
ostreambuf_iterator
Iterator operations
advance
distance
prev (C++11)
next (C++11)
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begincbegin (C++11)(C++14)
endcend (C++11)(C++14)
rbegincrbegin (C++14)(C++14)
rendcrend (C++14)(C++14)
Container access
sizessize (C++17)(C++20)
empty (C++17)
data (C++17)

 

Defined in header <iterator>
template <class Iter> std::reverse_iterator<Iter> make_reverse_iterator( Iter i );		(since C++14) (until C++17)
template <class Iter> constexpr std::reverse_iterator<Iter> make_reverse_iterator( Iter i );		(since C++17)

make_reverse_iterator is a convenience function template that constructs a std::reverse_iterator for the given iterator i with the type deduced from the type of the argument.

Parameters

i

-

iterator to be converted to reverse iterator

Return value

A std::reverse_iterator constructed from i

Possible implementation

template< class Iter > constexpr std::reverse_iterator<Iter> make_reverse_iterator( Iter i ) { return std::reverse_iterator<Iter>(i); }

Example

Run this code

#include <iostream>
#include <iterator>
#include <vector>
#include <algorithm>
 
int main() {
    std::vector<int> v{ 1, 3, 10, 8, 22 };
 
    std::sort(v.begin(), v.end());
    std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, ", "));
 
    std::cout << '\n';
 
    std::copy(
        std::make_reverse_iterator(v.end()), 
        std::make_reverse_iterator(v.begin()),
        std::ostream_iterator<int>(std::cout, ", "));
}

Output:

1, 3, 8, 10, 22, 
22, 10, 8, 3, 1,

See also

reverse_iterator	iterator adaptor for reverse-order traversal (class template)
rbegincrbegin (C++14)	returns a reverse iterator to a container or array (function template)
rendcrend (C++14)	returns a reverse end iterator for a container or array (function template)