std:: common_iterator

std::common_iterator is an iterator I / sentinel S adaptor that may represent a non-common range (where the types of I and S differ) as a common_range , by containing either an iterator or a sentinel, and defining the appropriate equality comparison operators operator == .

std::common_iterator can be used as a "bridge" between sequences represented by iterator/sentinel pair and legacy functions that expect common_range -like sequences.

Data members

Member functions

Non-member functions

Helper classes

Example

#include <algorithm>
#include <iostream>
#include <iterator>
#include <list>
#include <string>
 
template<class ForwardIter>
void fire(ForwardIter first, ForwardIter last)
{
    std::copy(first, last, std::ostream_iterator<std::string>{std::cout, " "});    
}
 
int main()
{
    std::list<std::string> stars{"Pollux", "Arcturus", "Mira", "Aldebaran", "Sun"};
 
    using IT = std::common_iterator<
                   std::counted_iterator<std::list<std::string>::iterator>,
                   std::default_sentinel_t>;
 
    fire(IT(std::counted_iterator(stars.begin(), stars.size() - 1)),
         IT(std::default_sentinel));
}

Pollux Arcturus Mira Aldebaran

References

See also