[push.heap]

🔗

template<class RandomAccessIterator>
  constexpr void push_heap(RandomAccessIterator first, RandomAccessIterator last);

template<class RandomAccessIterator, class Compare>
  constexpr void push_heap(RandomAccessIterator first, RandomAccessIterator last,
                           Compare comp);

template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
         class Proj = identity>
  requires sortable<I, Comp, Proj>
  constexpr I
    ranges::push_heap(I first, S last, Comp comp = {}, Proj proj = {});
template<random_access_range R, class Comp = ranges::less, class Proj = identity>
  requires sortable<iterator_t<R>, Comp, Proj>
  constexpr borrowed_iterator_t<R>
    ranges::push_heap(R&& r, Comp comp = {}, Proj proj = {});

Let comp be less{} and proj be identity{} for the overloads with no parameters by those names.

Preconditions: The range [first, last - 1) is a valid heap with respect to comp and proj.

For the overloads in namespace std, RandomAccessIterator meets the Cpp17ValueSwappable requirements ([swappable.requirements]) and the type of *first meets the Cpp17MoveConstructible requirements (Table 31) and the Cpp17MoveAssignable requirements (Table 33).

Effects: Places the value in the location last - 1 into the resulting heap [first, last).

Complexity: At most

log (last - first) comparisons and twice as many projections .

26 Algorithms library [algorithms]

26.8 Sorting and related operations [alg.sorting]

26.8.8 Heap operations [alg.heap.operations]

26.8.8.2 push_heap [push.heap]