Class template counting_iterator . Boost , Chapter 1. Boost.Compute , Reference

Class template counting_iterator

boost::compute::counting_iterator — The counting_iterator class implements a counting iterator.

Synopsis

// In header: <boost/compute/iterator/counting_iterator.hpp>
template<typename T> 
class counting_iterator {
public:
  // types
  typedef unspecified                 super_type;     
  typedef super_type::reference       reference;      
  typedef super_type::difference_type difference_type;
  // construct/copy/destruct
  counting_iterator(const T &);
  counting_iterator(const counting_iterator< T > &);
  counting_iterator< T > & operator=(const counting_iterator< T > &);
  ~counting_iterator();
  // public member functions
  size_t get_index() const;
  template<typename Expr> unspecified operator[](const Expr &) const;
  // private member functions
  reference dereference() const;
  bool equal(const counting_iterator< T > &) const;
  void increment();
  void decrement();
  void advance(difference_type);
  difference_type distance_to(const counting_iterator< T > &) const;
};

Description

Итератор подсчета возвращает внутреннее значение (инициализируется с<init>), которое увеличивается каждый раз, когда итератор увеличивается.

Например, это может быть использовано для реализации алгоритма iota() в терминах алгоритма copy() путем копирования из ряда итераторов подсчета:

См. также:

make_counting_iterator()

`counting_iterator` public construct/copy/destruct

<
```
counting_iterator(constT&init);
```
>

counting_iterator(constcounting_iterator<T>&other);

counting_iterator<T>&operator=(constcounting_iterator<T>&other);

<
```
~counting_iterator();
```
>

`counting_iterator` public member functions

<
```
size_tget_index()const;
```
>

template<typenameExpr>unspecifiedoperator[](constExpr&expr)const;

`counting_iterator` private member functions

<
```
referencedereference()const;
```
>

boolequal(constcounting_iterator<T>&other)const;

<
```
voidincrement();
```
>
<
```
voiddecrement();
```
>
<
```
voidadvance(difference_typen);
```
>

difference_typedistance_to(constcounting_iterator<T>&other)const;

Статья Class template counting_iterator раздела Chapter 1. Boost.Compute Reference может быть полезна для разработчиков на c++ и boost.

Class template counting_iterator

Boost , Chapter 1. Boost.Compute , Reference

Boost C++ Libraries

Class template counting_iterator

Synopsis

Description

counting_iterator public construct/copy/destruct

counting_iterator public member functions

counting_iterator private member functions

`counting_iterator` public construct/copy/destruct

`counting_iterator` public member functions

`counting_iterator` private member functions