all_any_none.hpp#

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

namespace hpx

Functions

template<typename ExPolicy, typename FwdIter, typename F> util::detail::algorithm_result<ExPolicy, bool>::type none_of(ExPolicy &&policy, FwdIter first, FwdIter last, F &&f)#

Checks if unary predicate f returns true for no elements in the range [first, last).

The application of function objects in parallel algorithm invoked with an execution policy object of type sequenced_policy execute in sequential order in the calling thread.

The application of function objects in parallel 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.

Note

Complexity: At most last - first applications of the predicate f

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 applies user-provided function objects.
FwdIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of an forward iterator.
F – The type of the function/function object to use (deduced). Unlike its sequential form, the parallel overload of none_of requires F to meet the requirements of CopyConstructible.

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.
last – Refers to the end of the sequence of elements the algorithm will be applied to.
f – Specifies the function (or function object) which will be invoked for each of the elements in the sequence specified by [first, last). The signature of this predicate should be equivalent to:
```
bool pred(const Type &a);
```
The signature does not need to have const&, but the function must not modify the objects passed to it. The type Type must be such that an object of type FwdIter can be dereferenced and then implicitly converted to Type.

Returns

The none_of algorithm returns a hpx::future<bool> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns bool otherwise. The none_of algorithm returns true if the unary predicate f returns true for no elements in the range, false otherwise. It returns true if the range is empty.

template<typename InIter, typename F> bool none_of(InIter first, InIter last, F &&f)#

Checks if unary predicate f returns true for no elements in the range [first, last).

Note

Complexity: At most last - first applications of the predicate f

Template Parameters

InIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of an input iterator.
F – The type of the function/function object to use (deduced). Unlike its sequential form, the parallel overload of none_of requires F to meet the requirements of CopyConstructible.

Parameters

first – Refers to the beginning of the sequence of elements the algorithm will be applied to.
last – Refers to the end of the sequence of elements the algorithm will be applied to.
f – Specifies the function (or function object) which will be invoked for each of the elements in the sequence specified by [first, last). The signature of this predicate should be equivalent to:
```
bool pred(const Type &a);
```
The signature does not need to have const&, but the function must not modify the objects passed to it. The type Type must be such that an object of type InIter can be dereferenced and then implicitly converted to Type.

Returns

The none_of algorithm returns a bool . The none_of algorithm returns true if the unary predicate f returns true for no elements in the range, false otherwise. It returns true if the range is empty.

template<typename ExPolicy, typename FwdIter, typename F> util::detail::algorithm_result<ExPolicy, bool>::type any_of(ExPolicy &&policy, FwdIter first, FwdIter last, F &&f)#

Checks if unary predicate f returns true for at least one element in the range [first, last).

The application of function objects in parallel algorithm invoked with an execution policy object of type sequenced_policy execute in sequential order in the calling thread.

Note

Complexity: At most last - first applications of the predicate f

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 applies user-provided function objects.
FwdIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of an forward iterator.
F – The type of the function/function object to use (deduced). Unlike its sequential form, the parallel overload of any_of requires F to meet the requirements of CopyConstructible.

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.
last – Refers to the end of the sequence of elements the algorithm will be applied to.
f – Specifies the function (or function object) which will be invoked for each of the elements in the sequence specified by [first, last). The signature of this predicate should be equivalent to:
```
bool pred(const Type &a);
```
The signature does not need to have const&, but the function must not modify the objects passed to it. The type Type must be such that an object of type FwdIter can be dereferenced and then implicitly converted to Type.

Returns

The any_of algorithm returns a hpx::future<bool> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns bool otherwise. The any_of algorithm returns true if the unary predicate f returns true for at least one element in the range, false otherwise. It returns false if the range is empty.

template<typename InIter, typename F> bool any_of(InIter first, InIter last, F &&f)#

Checks if unary predicate f returns true for at least one element in the range [first, last).

Note

Complexity: At most last - first applications of the predicate f

Template Parameters

InIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of an input iterator.
F – The type of the function/function object to use (deduced). Unlike its sequential form, the parallel overload of any_of requires F to meet the requirements of CopyConstructible.

Parameters

first – Refers to the beginning of the sequence of elements the algorithm will be applied to.
last – Refers to the end of the sequence of elements the algorithm will be applied to.
f – Specifies the function (or function object) which will be invoked for each of the elements in the sequence specified by [first, last). The signature of this predicate should be equivalent to:
```
bool pred(const Type &a);
```
The signature does not need to have const&, but the function must not modify the objects passed to it. The type Type must be such that an object of type InIter can be dereferenced and then implicitly converted to Type.

Returns

The any_of algorithm returns a bool . The any_of algorithm returns true if the unary predicate f returns true for at least one element in the range, false otherwise. It returns false if the range is empty.

template<typename ExPolicy, typename FwdIter, typename F> util::detail::algorithm_result<ExPolicy, bool>::type all_of(ExPolicy &&policy, FwdIter first, FwdIter last, F &&f)#

Checks if unary predicate f returns true for all elements in the range [first, last).

The application of function objects in parallel algorithm invoked with an execution policy object of type sequenced_policy execute in sequential order in the calling thread.

Note

Complexity: At most last - first applications of the predicate f

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 applies user-provided function objects.
FwdIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of an forward iterator.
F – The type of the function/function object to use (deduced). Unlike its sequential form, the parallel overload of all_of requires F to meet the requirements of CopyConstructible.

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.
last – Refers to the end of the sequence of elements the algorithm will be applied to.
f – Specifies the function (or function object) which will be invoked for each of the elements in the sequence specified by [first, last). The signature of this predicate should be equivalent to:
```
bool pred(const Type &a);
```
The signature does not need to have const&, but the function must not modify the objects passed to it. The type Type must be such that an object of type FwdIter can be dereferenced and then implicitly converted to Type.

Returns

The all_of algorithm returns a hpx::future<bool> if the execution policy is of type sequenced_task_policy or parallel_task_policy and returns bool otherwise. The all_of algorithm returns true if the unary predicate f returns true for all elements in the range, false otherwise. It returns true if the range is empty.

template<typename ExPolicy, typename InIter, typename F> bool all_of(InIter first, InIter last, F &&f)#

Checks if unary predicate f returns true for all elements in the range [first, last).

Note

Complexity: At most last - first applications of the predicate f

Template Parameters

InIter – The type of the source iterators used (deduced). This iterator type must meet the requirements of an input iterator.
F – The type of the function/function object to use (deduced). Unlike its sequential form, the parallel overload of all_of requires F to meet the requirements of CopyConstructible.

Parameters

first – Refers to the beginning of the sequence of elements the algorithm will be applied to.
last – Refers to the end of the sequence of elements the algorithm will be applied to.
f – Specifies the function (or function object) which will be invoked for each of the elements in the sequence specified by [first, last). The signature of this predicate should be equivalent to:
```
bool pred(const Type &a);
```
The signature does not need to have const&, but the function must not modify the objects passed to it. The type Type must be such that an object of type InIter can be dereferenced and then implicitly converted to Type.

Returns

The all_of algorithm returns a bool . The all_of algorithm returns true if the unary predicate f returns true for all elements in the range, false otherwise. It returns true if the range is empty.