TArray Class Reference

Abstract array base class.

Used by TArrayC, TArrayS, TArrayI, TArrayL, TArrayF and TArrayD. Data member is public for historical reasons.

PyROOT

When used from Python, the subclasses of TArray (TArrayC, TArrayS, TArrayI, TArrayL, TArrayF and TArrayD) benefit from the following extra features:

• Their size can be obtained with len, which is equivalent to TArray::GetSize():

  import ROOT
   
  a = ROOT.TArrayD(2)
  print(len(a)) # prints '2'

• Their elements can be read and written with the getitem and setitem operators, respectively:

  a[0] = 0.2
  a[1] = 1.7
  print(a[0]) # prints '0.2'

• They are iterable:

  for elem in a:
      print(elem)

Definition at line 31 of file TArray.h.

Public Member Functions
	TArray ()
	TArray (const TArray &a)
	TArray (Int_t n)
virtual	~TArray ()
virtual Double_t	GetAt (Int_t i) const =0
Int_t	GetSize () const
TArray &	operator= (const TArray &rhs)
virtual void	Set (Int_t n)=0
virtual void	SetAt (Double_t v, Int_t i)=0

Static Public Member Functions
static TArray *	ReadArray (TBuffer &b, const TClass *clReq)
	Read TArray object from buffer.
static void	WriteArray (TBuffer &b, const TArray *a)
	Write TArray object to buffer.

Public Attributes
Int_t	fN

Protected Member Functions
Bool_t	BoundsOk (const char *where, Int_t at) const
Bool_t	OutOfBoundsError (const char *where, Int_t i) const
	Generate an out-of-bounds error. Always returns false.

Friends
TBuffer &	operator<< (TBuffer &b, const TArray *obj)
	Write TArray or derived object to buffer.

#include <TArray.h>

Inheritance diagram for TArray:

Constructor & Destructor Documentation

TArray() [1/3]

TArray::TArray ( )

inline

Definition at line 40 of file TArray.h.

TArray() [2/3]

TArray::TArray ( Int_t  n )

inline

Definition at line 41 of file TArray.h.

TArray() [3/3]

TArray::TArray ( const TArray &  a )

inline

Definition at line 42 of file TArray.h.

~TArray()

virtual TArray::~TArray ( )

inlinevirtual

Definition at line 45 of file TArray.h.

Member Function Documentation

BoundsOk()

Bool_t TArray::BoundsOk ( const char *  where, Int_t  at  ) const

inlineprotected

Definition at line 77 of file TArray.h.

GetAt()

virtual Double_t TArray::GetAt ( Int_t  i ) const

pure virtual

Implemented in TArrayC, TArrayD, TArrayF, TArrayI, TArrayL, TArrayL64, and TArrayS.

GetSize()

Int_t TArray::GetSize ( ) const

inline

Definition at line 47 of file TArray.h.

operator=()

TArray & TArray::operator= ( const TArray &  rhs )

inline

Definition at line 43 of file TArray.h.

OutOfBoundsError()

Bool_t TArray::OutOfBoundsError ( const char *  where, Int_t  i  ) const

protected

Generate an out-of-bounds error. Always returns false.

Definition at line 30 of file TArray.cxx.

ReadArray()

TArray * TArray::ReadArray ( TBuffer &  b, const TClass *  clReq  )

static

Read TArray object from buffer.

Simplified version of TBuffer::ReadObject (does not keep track of multiple references to same array).

Definition at line 41 of file TArray.cxx.

Set()

virtual void TArray::Set ( Int_t  n )

pure virtual

Implemented in TArrayC, TArrayD, TArrayF, TArrayI, TArrayL, TArrayL64, and TArrayS.

SetAt()

virtual void TArray::SetAt ( Double_t  v, Int_t  i  )

pure virtual

Implemented in TArrayC, TArrayD, TArrayF, TArrayI, TArrayL, TArrayL64, and TArrayS.

WriteArray()

void TArray::WriteArray ( TBuffer &  b, const TArray *  a  )

static

Write TArray object to buffer.

Simplified version of TBuffer::WriteObject (does not keep track of multiple references to the same array).

Definition at line 82 of file TArray.cxx.

Friends And Related Symbol Documentation

operator<<

TBuffer & operator<< ( TBuffer &  b, const TArray *  obj  )

friend

Write TArray or derived object to buffer.

Definition at line 112 of file TArray.cxx.

Member Data Documentation

fN

Int_t TArray::fN

Definition at line 38 of file TArray.h.