DIterator is an iterator adaptor class. More...

#include <DIterator.h>

Public Types
typedef std::iterator_traits< BaseIterator >	Traits
	Forward typedef from underlying iterator.

typedef Traits::iterator_category	iterator_category
	Forward typedef from underlying iterator.

typedef Traits::difference_type	difference_type
	Forward typedef from underlying iterator.

typedef Traits::value_type	PtrType
	Forward typedef from underlying iterator.

typedef std::iterator_traits< PtrType >	PtrTraits
	Forward typedef from underlying iterator.

typedef PtrTraits::value_type	value_type
	Forward typedef from underlying iterator.

typedef PtrTraits::pointer	pointer
	Forward typedef from underlying iterator.

typedef PtrTraits::reference	reference
	Forward typedef from underlying iterator.

Public Member Functions
	DIterator (const BaseIterator &in)
	Constructor from a normal iterator.

	DIterator (const DIterator &pi)
	Copy constructor.

reference	operator* () const
	Dereference the pointer referred to by the underlying iterator.

pointer	operator-> () const
	Select member from the pointer referred to by the underlying iterator.

DIterator &	operator= (const DIterator &pi)
	Standard assignment operator.

DIterator &	operator= (const BaseIterator &pi)
	Assignment from a a normal iterator.

reference	operator[] (difference_type n)
	Select a pointer with the given index and return a reference to the object pointed to.

difference_type	operator- (const DIterator &pi)
	Return the distance to the given iterator.

Increment and decrement operators.
DIterator &	operator++ ()
	Pre increment the underlying iterator. More...

DIterator	operator++ (int)
	Post increment the underlying iterator. More...

DIterator &	operator-- ()
	Pre decrement the underlying iterator. More...

DIterator	operator-- (int)
	Post decrement the underlying iterator. More...

DIterator &	operator+= (int n)
	Jump forward n steps.

DIterator	operator+ (int n)
	Get an iterator n steps forward. More...

DIterator &	operator-= (int n)
	Jump backward n steps.

DIterator	operator- (int n)
	Get an iterator n steps backward. More...

Comparison operators.
bool	operator== (const DIterator &pi)
	Test for equality. More...

bool	operator!= (const DIterator &pi)
	Test for inequality. More...

bool	operator< (const DIterator &pi)
	Test for less. More...

bool	operator> (const DIterator &pi)
	Test for greater. More...

bool	operator<= (const DIterator &pi)
	Test for less or equal. More...

bool	operator>= (const DIterator &pi)
	Test for greater or equal. More...

bool	operator== (const BaseIterator &bi)
	Test for equality. More...

bool	operator!= (const BaseIterator &bi)
	Test for inequality. More...

bool	operator< (const BaseIterator &bi)
	Test for less. More...

bool	operator> (const BaseIterator &bi)
	Test for greater. More...

bool	operator<= (const BaseIterator &bi)
	Test for less or equal. More...

bool	operator>= (const BaseIterator &bi)
	Test for greater or equal. More...

Private Member Functions
	DIterator ()
	The default constructor should never be used.

Private Attributes
BaseIterator	i
	The underlying standard iterator.

Detailed Description

template<typename BaseIterator>
class ThePEG::DIterator< BaseIterator >

DIterator is an iterator adaptor class.

It can be used whenever one has a container with pointers to facilitate member selection. The only requirement is that the underlying pointer is pointing to a valid object. Given e.g. a vector of pointers, vector<A*> pv where the class A has a member function dosomething(), it can be used as follows:
typedef DIterator<typename vector<A*>::iterator> It;
for ( It i = dv.begin(), i != dv.end(), ++i ) i->dosomething();

Definition at line 29 of file DIterator.h.