std::experimental::ranges::find_end(3)

NAME
std::experimental::ranges::find_end - std::experimental::ranges::find_end

Synopsis
   Defined in header <experimental/ranges/algorithm>
   template< ForwardIterator I1, Sentinel<I1> S1, ForwardIterator I2,
   Sentinel<I2> S2,
   class Proj = ranges::identity,
   IndirectRelation<I2, projected<I1, Proj>> Pred = ranges::equal_to<> (1) (ranges TS)
   >
   I1 find_end(I1 first1, S1 last1, I2 first2, S2 last2,
   Pred pred = Pred{}, Proj proj = Proj{});
   template< ForwardRange R1, ForwardRange R2, class Proj =
   ranges::identity,
   IndirectRelation<ranges::iterator_t<R2>, (2) (ranges TS)
   projected<ranges::iterator_t<R1>, Proj>> Pred = ranges::equal_to<> >
   ranges::safe_iterator_t<R1> find_end(Rng1&& rng1, Rng2&& rng2,
   Pred pred = Pred{}, Proj proj = Proj{});
   1) Searches for the last occurrence of the sequence [first2, last2) in the range
   [first1, last1) (after projection with proj).
   2) Same as (1), but uses r1 as the first source range and r2 as the second source
   range, as if using ranges::begin(r1) as first1, ranges::end(r1) as last1,
   ranges::begin(r2) as first2, and ranges::end(r2) as last2.
   Notwithstanding the declarations depicted above, the actual number and order of
   template parameters for algorithm declarations is unspecified. Thus, if explicit
   template arguments are used when calling an algorithm, the program is probably
   non-portable.

Parameters
   first1, last1 - the range of elements to examine
   r1 - the range of elements to examine
   first2, last2 - the range of elements to search for
   r2 - the range of elements to search for
   pred - predicate to compare the elements
   proj - projection to apply to the elements in the first range

Return value
   Iterator to the beginning of last occurrence of the sequence [first2, last2) in
   range [first1, last1) (after projection with proj).
   If [first2, last2) is empty or if no such sequence is found, an iterator that
   compares equal to last1 is returned.

Complexity
   At most S*(N-S+1) applications of the predicate and projection, where S = last2 -
   first2 and N = last1 - first1.

Notes
   The projection is only applied to the range [first1, last1).

Possible implementation
   template< ForwardIterator I1, Sentinel<I1> S1, ForwardIterator I2, Sentinel<I2> S2,
             class Proj = ranges::identity,
             IndirectRelation<I2, projected<I1, Proj>> Pred = ranges::equal_to<> >
   I1 find_end(I1 first1, S1 last1, I2 first2, S2 last2,
               Pred pred = Pred{}, Proj proj = Proj{})
   {
       I1 result = ranges::next(first1, last1);
       if (first2 == last2)
           return result;
       while (true) {
           I1 new_result = ranges::search(first1, last1, first2, last2, pred, proj);
           if (new_result == last1) {
               break;
           } else {
               result = new_result;
               first1 = result;
               ++first1;
           }
       }
       return result;
   }

Example
    This section is incomplete
    Reason: no example

See also
   find_end finds the last sequence of elements in a certain range
                 (function template)
   search searches for a range of elements
                 (function template)
   includes returns true if one set is a subset of another
                 (function template)
                 finds the first two adjacent items that are equal (or satisfy a given
   adjacent_find predicate)
                 (function template)
   find finds the first element satisfying specific criteria
   find_if (function template)
   find_if_not
   find_first_of searches for any one of a set of elements
                 (function template)
   search_n searches for a number consecutive copies of an element in a range
                 (function template)