template<class InputIterator, class Predicate>
constexpr bool is_partitioned(InputIterator first, InputIterator last, Predicate pred);
template<class ExecutionPolicy, class ForwardIterator, class Predicate>
bool is_partitioned(ExecutionPolicy&& exec,
ForwardIterator first, ForwardIterator last, Predicate pred);
template<input_iterator I, sentinel_for<I> S, class Proj = identity,
indirect_unary_predicate<projected<I, Proj>> Pred>
constexpr bool ranges::is_partitioned(I first, S last, Pred pred, Proj proj = {});
template<input_range R, class Proj = identity,
indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
constexpr bool ranges::is_partitioned(R&& r, Pred pred, Proj proj = {});
template<class ForwardIterator, class Predicate>
constexpr ForwardIterator
partition(ForwardIterator first, ForwardIterator last, Predicate pred);
template<class ExecutionPolicy, class ForwardIterator, class Predicate>
ForwardIterator
partition(ExecutionPolicy&& exec,
ForwardIterator first, ForwardIterator last, Predicate pred);
template<permutable I, sentinel_for<I> S, class Proj = identity,
indirect_unary_predicate<projected<I, Proj>> Pred>
constexpr subrange<I>
ranges::partition(I first, S last, Pred pred, Proj proj = {});
template<forward_range R, class Proj = identity,
indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
requires permutable<iterator_t<R>>
constexpr borrowed_subrange_t<R>
ranges::partition(R&& r, Pred pred, Proj proj = {});
template<class BidirectionalIterator, class Predicate>
BidirectionalIterator
stable_partition(BidirectionalIterator first, BidirectionalIterator last, Predicate pred);
template<class ExecutionPolicy, class BidirectionalIterator, class Predicate>
BidirectionalIterator
stable_partition(ExecutionPolicy&& exec,
BidirectionalIterator first, BidirectionalIterator last, Predicate pred);
template<bidirectional_iterator I, sentinel_for<I> S, class Proj = identity,
indirect_unary_predicate<projected<I, Proj>> Pred>
requires permutable<I>
subrange<I> ranges::stable_partition(I first, S last, Pred pred, Proj proj = {});
template<bidirectional_range R, class Proj = identity,
indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
requires permutable<iterator_t<R>>
borrowed_subrange_t<R> ranges::stable_partition(R&& r, Pred pred, Proj proj = {});
template<class InputIterator, class OutputIterator1, class OutputIterator2, class Predicate>
constexpr pair<OutputIterator1, OutputIterator2>
partition_copy(InputIterator first, InputIterator last,
OutputIterator1 out_true, OutputIterator2 out_false, Predicate pred);
template<class ExecutionPolicy, class ForwardIterator, class ForwardIterator1,
class ForwardIterator2, class Predicate>
pair<ForwardIterator1, ForwardIterator2>
partition_copy(ExecutionPolicy&& exec,
ForwardIterator first, ForwardIterator last,
ForwardIterator1 out_true, ForwardIterator2 out_false, Predicate pred);
template<input_iterator I, sentinel_for<I> S, weakly_incrementable O1, weakly_incrementable O2,
class Proj = identity, indirect_unary_predicate<projected<I, Proj>> Pred>
requires indirectly_copyable<I, O1> && indirectly_copyable<I, O2>
constexpr ranges::partition_copy_result<I, O1, O2>
ranges::partition_copy(I first, S last, O1 out_true, O2 out_false, Pred pred,
Proj proj = {});
template<input_range R, weakly_incrementable O1, weakly_incrementable O2,
class Proj = identity,
indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
requires indirectly_copyable<iterator_t<R>, O1> &&
indirectly_copyable<iterator_t<R>, O2>
constexpr ranges::partition_copy_result<borrowed_iterator_t<R>, O1, O2>
ranges::partition_copy(R&& r, O1 out_true, O2 out_false, Pred pred, Proj proj = {});
template<class ForwardIterator, class Predicate>
constexpr ForwardIterator
partition_point(ForwardIterator first, ForwardIterator last, Predicate pred);
template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
indirect_unary_predicate<projected<I, Proj>> Pred>
constexpr I ranges::partition_point(I first, S last, Pred pred, Proj proj = {});
template<forward_range R, class Proj = identity,
indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
constexpr borrowed_iterator_t<R>
ranges::partition_point(R&& r, Pred pred, Proj proj = {});