DGtal::OneItemOutputIterator< T > Class Template Reference

Aim: model of output iterator, ie incrementable and writable iterator, which only stores in a variable the last assigned item. More...

#include <DGtal/base/OneItemOutputIterator.h>

Public Types
using	iterator_category = std::output_iterator_tag
using	value_type = void
using	difference_type = void
using	pointer = void
using	reference = void

Public Member Functions
	BOOST_CONCEPT_ASSERT ((boost::DefaultConstructible< T >))
	BOOST_CONCEPT_ASSERT ((boost::CopyConstructible< T >))
	BOOST_CONCEPT_ASSERT ((boost::Assignable< T >))
	OneItemOutputIterator ()
	OneItemOutputIterator (const OneItemOutputIterator &other)
OneItemOutputIterator &	operator= (const T &aItem)
OneItemOutputIterator &	operator* ()
OneItemOutputIterator &	operator++ ()
OneItemOutputIterator	operator++ (int)
T	get () const
bool	isValid () const

Private Attributes
T *	myItemPtr
	pointer that stores the last assigned item

Detailed Description

template<typename T>
class DGtal::OneItemOutputIterator< T >

Aim: model of output iterator, ie incrementable and writable iterator, which only stores in a variable the last assigned item.

Description of template class 'OneItemOutputIterator'

Template Parameters

T	at least a default constructible, copy constuctible and assignable type.

Definition at line 59 of file OneItemOutputIterator.h.

Member Typedef Documentation

difference_type

template<typename T>

using DGtal::OneItemOutputIterator< T >::difference_type = void

Definition at line 65 of file OneItemOutputIterator.h.

iterator_category

template<typename T>

using DGtal::OneItemOutputIterator< T >::iterator_category = std::output_iterator_tag

Definition at line 63 of file OneItemOutputIterator.h.

pointer

template<typename T>

using DGtal::OneItemOutputIterator< T >::pointer = void

Definition at line 66 of file OneItemOutputIterator.h.

reference

template<typename T>

using DGtal::OneItemOutputIterator< T >::reference = void

Definition at line 67 of file OneItemOutputIterator.h.

value_type

template<typename T>

using DGtal::OneItemOutputIterator< T >::value_type = void

Definition at line 64 of file OneItemOutputIterator.h.

Constructor & Destructor Documentation

OneItemOutputIterator() [1/2]

template<typename T>

DGtal::OneItemOutputIterator< T >::OneItemOutputIterator ( )

inline

Default constructor.

Definition at line 80 of file OneItemOutputIterator.h.

                           : myItemPtr(NULL)
    {
      myItemPtr = new T(); 
    }

References myItemPtr.

Referenced by OneItemOutputIterator(), operator*(), operator++(), operator++(), and operator=().

OneItemOutputIterator() [2/2]

template<typename T>

DGtal::OneItemOutputIterator< T >::OneItemOutputIterator ( const OneItemOutputIterator< T > & other )

inline

Copy constructor.

Definition at line 87 of file OneItemOutputIterator.h.

: myItemPtr(other.myItemPtr) {}

References myItemPtr, and OneItemOutputIterator().

Member Function Documentation

BOOST_CONCEPT_ASSERT() [1/3]

template<typename T>

DGtal::OneItemOutputIterator< T >::BOOST_CONCEPT_ASSERT

(

(boost::Assignable< T >)

)

BOOST_CONCEPT_ASSERT() [2/3]

template<typename T>

DGtal::OneItemOutputIterator< T >::BOOST_CONCEPT_ASSERT

(

(boost::CopyConstructible< T >)

)

BOOST_CONCEPT_ASSERT() [3/3]

template<typename T>

DGtal::OneItemOutputIterator< T >::BOOST_CONCEPT_ASSERT

(

(boost::DefaultConstructible< T >)

)

get()

template<typename T>

T DGtal::OneItemOutputIterator< T >::get ( ) const

inline

Accessor to the last assigned item.

Returns

the content of myItem.

Definition at line 126 of file OneItemOutputIterator.h.

    {
      ASSERT( isValid() ); 
      return *myItemPtr; 
    }

References isValid(), and myItemPtr.

isValid()

template<typename T>

bool DGtal::OneItemOutputIterator< T >::isValid ( ) const

inline

Checks the validity/consistency of the object.

Returns

'true' if the object is valid, 'false' otherwise.

Definition at line 136 of file OneItemOutputIterator.h.

{ return (myItemPtr != NULL); }

References myItemPtr.

Referenced by get(), and operator=().

operator*()

template<typename T>

OneItemOutputIterator & DGtal::OneItemOutputIterator< T >::operator* ( )

inline

Dereference operator

Returns

a reference to *this

Definition at line 108 of file OneItemOutputIterator.h.

{ return *this; }

References OneItemOutputIterator().

operator++() [1/2]

template<typename T>

OneItemOutputIterator & DGtal::OneItemOutputIterator< T >::operator++ ( )

inline

Pre-increment operator

Returns

a reference to *this

Definition at line 114 of file OneItemOutputIterator.h.

{ return *this; }

References OneItemOutputIterator().

operator++() [2/2]

template<typename T>

OneItemOutputIterator DGtal::OneItemOutputIterator< T >::operator++ ( int )

inline

Post-increment operator

Returns

*this

Definition at line 120 of file OneItemOutputIterator.h.

{ return *this; } 

References OneItemOutputIterator().

operator=()

template<typename T>

OneItemOutputIterator & DGtal::OneItemOutputIterator< T >::operator= ( const T & aItem )

inline

Assignment

Parameters

aItem

any item

Returns

a reference to *this

Definition at line 97 of file OneItemOutputIterator.h.

    { 
      ASSERT( isValid() ); 
      *myItemPtr = aItem;
      return *this; 
    }

References isValid(), myItemPtr, and OneItemOutputIterator().

Field Documentation

myItemPtr

template<typename T>

T* DGtal::OneItemOutputIterator< T >::myItemPtr

private

pointer that stores the last assigned item

Definition at line 141 of file OneItemOutputIterator.h.

Referenced by get(), isValid(), OneItemOutputIterator(), OneItemOutputIterator(), and operator=().

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

• OneItemOutputIterator.h