destroy.hpp¶

See Public API for a list of names and headers that are part of the public HPX API.

namespace hpx

namespace ranges

Functions

template<typename ExPolicy> util::detail::algorithm_result<ExPolicy, typename traits::range_iterator<Rng>::type>::type destroy(ExPolicy &&policy, Rng &&rng)¶

Destroys objects of type typename iterator_traits<ForwardIt>::value_type in the range [first, last).

The operations in the parallel

destroy algorithm invoked with an execution policy object of type sequenced_policy execute in sequential order in the calling thread.

Note

Complexity: Performs exactly last - first operations.

Template Parameters

ExPolicy: The type of the execution policy to use (deduced). It describes the manner in which the execution of the algorithm may be parallelized and the manner in which it executes the assignments.
Rng: The type of the source range used (deduced). The iterators extracted from this range type must meet the requirements of an input iterator.

Parameters

policy: The execution policy to use for the scheduling of the iterations.
rng: Refers to the sequence of elements the algorithm will be applied to.

The operations in the parallel destroy algorithm invoked with an execution policy object of type parallel_policy or parallel_task_policy are permitted to execute in an unordered fashion in unspecified threads, and indeterminately sequenced within each thread.

Return: The destroy algorithm returns a hpx::future<void>, if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns void otherwise.

template<typename ExPolicy, typename FwdIter, typename Size> util::detail::algorithm_result<ExPolicy, FwdIter>::type destroy_n(ExPolicy &&policy, FwdIter first, Size count)¶

Destroys objects of type typename iterator_traits<ForwardIt>::value_type in the range [first, first + count).

The operations in the parallel

destroy_n algorithm invoked with an execution policy object of type sequenced_policy execute in sequential order in the calling thread.

Note

Complexity: Performs exactly count operations, if count > 0, no assignments otherwise.

Template Parameters

ExPolicy: The type of the execution policy to use (deduced). It describes the manner in which the execution of the algorithm may be parallelized and the manner in which it executes the assignments.
FwdIter: The type of the source iterators used (deduced). This iterator type must meet the requirements of an forward iterator.
Size: The type of the argument specifying the number of elements to apply this algorithm to.

Parameters

policy: The execution policy to use for the scheduling of the iterations.
first: Refers to the beginning of the sequence of elements the algorithm will be applied to.
count: Refers to the number of elements starting at first the algorithm will be applied to.

The operations in the parallel destroy_n algorithm invoked with an execution policy object of type parallel_policy or parallel_task_policy are permitted to execute in an unordered fashion in unspecified threads, and indeterminately sequenced within each thread.

Return: The destroy_n algorithm returns a hpx::future<FwdIter> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns FwdIter otherwise. The destroy_n algorithm returns the iterator to the element in the source range, one past the last element constructed.