TIteratorToSTLInterface< STLContainer > Class Template Reference

template<class STLContainer>
class TIteratorToSTLInterface< STLContainer >

TIterator and GenericRooFIter front end with STL back end.

By default, this iterators counts, at which position the current element should be. On request, it does an index access to the underlying collection, and returns the element. This happens because the RooLinkedList, which used to be the default collection in RooFit, will not invalidate iterators when inserting elements. Since the default is now an STL collection, reallocations might invalidate the iterator.

With an iterator that counts, only inserting before or at the iterator position will create problems. deal with reallocations while iterating. Therefore, this iterator will also check that the last element it was pointing to is the current element when it is invoked again. This ensures that inserting or removing before this iterator does not happen, which was possible with the linked list iterators of RooFit. When NDEBUG is defined, these checks will disappear.

Note

This is a legacy iterator that only exists to not break old code. Use begin(), end() and range-based for loops with RooArgList and RooArgSet.

Definition at line 98 of file RooLinkedListIter.h.

Public Member Functions
	TIteratorToSTLInterface (const STLContainer &container)
const TCollection *	GetCollection () const override
RooAbsArg *	next () override
	Return next element or nullptr if at end.
TObject *	Next () override
bool	operator!= (const TIterator &other) const override
	Compare two iterator objects.
TObject *	operator* () const override
	Return current object or nullptr.
TIterator &	operator= (const TIterator &) override
void	Reset () override
Public Member Functions inherited from TIterator
virtual	~TIterator ()
virtual Option_t *	GetOption () const
virtual TClass *	IsA () const
TObject *	operator() ()
Bool_t	operator== (const TIterator &other) const
virtual void	Streamer (TBuffer &)
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
Public Member Functions inherited from GenericRooFIter
virtual	~GenericRooFIter ()

Private Member Functions
bool	atEnd () const
RooAbsArg *	nextChecked ()

Private Attributes
const RooAbsArg *	fCurrentElem
	!
std::size_t	fIndex
	!
const STLContainer &	fSTLContainer
	!

Additional Inherited Members
Static Public Member Functions inherited from TIterator
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
Protected Member Functions inherited from TIterator
	TIterator ()
	TIterator (const TIterator &)

#include <RooLinkedListIter.h>

Inheritance diagram for TIteratorToSTLInterface< STLContainer >:

Constructor & Destructor Documentation

TIteratorToSTLInterface()

template<class STLContainer >

TIteratorToSTLInterface< STLContainer >::TIteratorToSTLInterface ( const STLContainer &  container )

inline

Definition at line 101 of file RooLinkedListIter.h.

Member Function Documentation

atEnd()

template<class STLContainer >

bool TIteratorToSTLInterface< STLContainer >::atEnd ( ) const

inlineprivate

Definition at line 166 of file RooLinkedListIter.h.

GetCollection()

template<class STLContainer >

const TCollection * TIteratorToSTLInterface< STLContainer >::GetCollection ( ) const

inlineoverridevirtual

Implements TIterator.

Definition at line 119 of file RooLinkedListIter.h.

next()

template<class STLContainer >

RooAbsArg * TIteratorToSTLInterface< STLContainer >::next ( )

inlineoverridevirtual

Return next element or nullptr if at end.

Implements GenericRooFIter.

Definition at line 123 of file RooLinkedListIter.h.

Next()

template<class STLContainer >

TObject * TIteratorToSTLInterface< STLContainer >::Next ( )

inlineoverridevirtual

Implements TIterator.

Definition at line 134 of file RooLinkedListIter.h.

nextChecked()

template<class STLContainer >

RooAbsArg * TIteratorToSTLInterface< STLContainer >::nextChecked ( )

inlineprivate

Definition at line 172 of file RooLinkedListIter.h.

operator!=()

template<class STLContainer >

bool TIteratorToSTLInterface< STLContainer >::operator!= ( const TIterator &  ) const

inlineoverridevirtual

Compare two iterator objects.

For backward compatibility reasons we have to provide this default implementation.

Reimplemented from TIterator.

Definition at line 146 of file RooLinkedListIter.h.

operator*()

template<class STLContainer >

TObject * TIteratorToSTLInterface< STLContainer >::operator* ( ) const

inlineoverridevirtual

Return current object or nullptr.

For backward compatibility reasons we have to provide this default implementation.

Reimplemented from TIterator.

Definition at line 153 of file RooLinkedListIter.h.

operator=()

template<class STLContainer >

TIterator & TIteratorToSTLInterface< STLContainer >::operator= ( const TIterator &  )

inlineoverridevirtual

Implements TIterator.

Definition at line 115 of file RooLinkedListIter.h.

Reset()

template<class STLContainer >

void TIteratorToSTLInterface< STLContainer >::Reset ( )

inlineoverridevirtual

Implements TIterator.

Definition at line 138 of file RooLinkedListIter.h.

Member Data Documentation

fCurrentElem

template<class STLContainer >

const RooAbsArg* TIteratorToSTLInterface< STLContainer >::fCurrentElem

private

!

Definition at line 186 of file RooLinkedListIter.h.

fIndex

template<class STLContainer >

std::size_t TIteratorToSTLInterface< STLContainer >::fIndex

private

!

Definition at line 185 of file RooLinkedListIter.h.

fSTLContainer

template<class STLContainer >

const STLContainer& TIteratorToSTLInterface< STLContainer >::fSTLContainer

private

!

Definition at line 184 of file RooLinkedListIter.h.