library: libCore #include "TRefArray.h" |
TRefArrayIter
class description - source file - inheritance tree (.pdf)
private:
TRefArrayIter()
public:
TRefArrayIter(const TRefArray* arr, Bool_t dir = kIterForward)
TRefArrayIter(const TRefArrayIter& iter)
~TRefArrayIter()
static TClass* Class()
virtual const TCollection* GetCollection() const
virtual TClass* IsA() const
virtual TObject* Next()
virtual TIterator& operator=(const TIterator& rhs)
TRefArrayIter& operator=(const TRefArrayIter& rhs)
virtual void Reset()
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
private:
const TRefArray* fArray array being iterated
Int_t fCursor current position in array
Bool_t fDirection iteration direction
TRefArray
An array of references to TObjects. The array expands automatically
when objects are added (shrinking can be done by hand using Expand()
The TRefArray can be filled with:
array.Add(obj)
array.AddAt(obj,i)
but not array[i] = obj !!!
The array elements can be retrieved with:
TObject *obj = array.At(i);
When a TRefArray is Streamed, only the pointer unique id is written,
not the referenced object. TRefArray may be assigned to different
branches of one Tree or several Trees.
The branch containing the TRefArray can be read before or after the
array (eg TClonesArray, STL vector,..) of the referenced objects.
See an example in $ROOTSYS/test/Event.h
RESTRICTIONS when using TRefArray
---------------------------------
- Elements in a TRefArray cannot point to a TFile or TDirectory.
- All elements of a TRefArray must be set in the same process,
In particular, one cannot modify some elements of the array in
a different process.
Use an array of TRef when one of the above restrictions is met.
TRefArrayIter(const TRefArray *arr, Bool_t dir)
Create array iterator. By default the iteration direction
is kIterForward. To go backward use kIterBackward.
TRefArrayIter(const TRefArrayIter &iter) : TIterator(iter)
Copy ctor.
TObject* Next()
Return next object in array. Returns 0 when no more objects in array.
void Reset()
Reset array iterator.
Inline Functions
void ~TRefArrayIter()
TRefArrayIter TRefArrayIter(const TRefArrayIter& iter)
TIterator& operator=(const TIterator& rhs)
TRefArrayIter& operator=(const TRefArrayIter& rhs)
const TCollection* GetCollection() const
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
Author: Rene Brun 02/10/2001
Last update: root/cont:$Name: $:$Id: TRefArray.cxx,v 1.20 2005/03/26 07:02:14 brun Exp $
Copyright (C) 1995-2001, Rene Brun and Fons Rademakers. *
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