# Gst::Iterator<CppType> Class Template Reference

Gst::Iterator - Class that retrieve multiple reference counted elements in a thread safe way. More...

`#include <iterator.h>`

Inheritance diagram for Gst::Iterator< CppType >:

List of all members.

## Public Member Functions

| Iterator ()
| Default constructor.
| Iterator (GstIterator* castitem, bool take_ownership=true)
| Creates a Gst::Iterator wrapper for a GstIterator object.
IteratorResult | next ()
| Moves to the next iterator item.
Glib::RefPtr<CppType> | operator* () const
| Dereferences the iterator and obtains the underlying Glib::RefPtr<>.
CppType* | operator-> () const
| Accesses underlying object member through the RefPtr<>.
Iterator<CppType>& | operator++ ()
| Prefix auto-increment operator.
Iterator<CppType> | operator++ (int)
| Postfix auto-increment operator.

## Detailed Description

### template <class CppType>
class Gst::Iterator< CppType >

Gst::Iterator - Class that retrieve multiple reference counted elements in a thread safe way.

Gst::Iterator iterates specifically through elements that are reference counted and therefore dereferencing the elements of the iterator yields a Glib::RefPtr<> to the C++ element type.

## Constructor& Destructor Documentation

template <class CppType>

Gst::Iterator<CppType>::Iterator | ( |  | ) |

Default constructor.

template <class CppType>

Gst::Iterator<CppType>::Iterator | ( | GstIterator< CppType > * | castitem,
|  | bool | take_ownership = `true` |
| ) |  |  |

Creates a Gst::Iterator wrapper for a GstIterator object.

The underlying castitem will be freed with the Gst::Iterator destruction if a take_ownership value of true is given.

Parameters:

  | castitem | The C instance to wrap.
  | take_ownership | Whether to take over the underlying C object. If true, C object is freed when wrapper is destroyed.

## Member Function Documentation

template <class CppType>

IteratorResult Gst::Iterator<CppType>::next | ( |  | ) | `[virtual]`

Moves to the next iterator item.

Returns:
  The result of the iteration. MT safe.

Reimplemented from Gst::IteratorBase<CppType>.

template <class CppType>

Glib::RefPtr<CppType> Gst::Iterator<CppType>::operator* | ( |  | ) | const

Dereferences the iterator and obtains the underlying Glib::RefPtr<>.

Reimplemented from Gst::IteratorBasic<CppType>.

template <class CppType>

CppType* Gst::Iterator<CppType>::operator-> | ( |  | ) | const

Accesses underlying object member through the RefPtr<>.

Reimplemented from Gst::IteratorBasic<CppType>.

template <class CppType>

Iterator<CppType>& Gst::Iterator<CppType>::operator++ | ( |  | ) |

Prefix auto-increment operator.

It advances to the next item in the iterator. It is faster than the postfix operator.

Exceptions:

  | std::runtime_error | (if a Gst::ITERATOR_ERROR is encountered or if a concurrent update to the iterator occurs while it iterates).

Reimplemented from Gst::IteratorBasic<CppType>.

template <class CppType>

Iterator<CppType> Gst::Iterator<CppType>::operator++ | ( | int |  | ) |

Postfix auto-increment operator.

It advances to the next item in the iterator.

Exceptions:

  | std::runtime_error | (if a Gst::ITERATOR_ERROR is encountered or if a concurrent update to the iterator occurs while it iterates).

Reimplemented from Gst::IteratorBasic<CppType>.

The documentation for this class was generated from the following file:

- iterator.h