NAME¶

std::make_reverse_iterator - std::make_reverse_iterator

Synopsis¶

Defined in header <iterator>
template <class Iter> (since C++14)
std::reverse_iterator<Iter> make_reverse_iterator( Iter i ); (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 (which must be a
LegacyBidirectionalIterator) 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

Notes¶

Feature-test macro: __cpp_lib_make_reverse_iterator

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)
rbegin returns a reverse iterator to the beginning of a container or array
crbegin (function template)
(C++14)
rend returns a reverse end iterator for a container or array
crend (function template)
(C++14)