TTreeReader::Iterator_t Class Reference

Iterate through the entries of a TTree.

This iterator drives the associated TTreeReader; its dereferencing (and actually even the iteration) will set the entry number represented by this iterator. It does not really represent a data element; it simply returns the entry number (or -1 once the end of the tree is reached).

Definition at line 57 of file TTreeReader.h.

Public Types
using	const_pointer = const Long64_t *
using	difference_type = Long64_t
using	iterator_category = std::input_iterator_tag
using	pointer = const Long64_t *
using	reference = const Long64_t &
using	value_type = const Long64_t

Public Member Functions
	Iterator_t ()
	Default-initialize the iterator as "past the end".
	Iterator_t (TTreeReader &reader, Long64_t entry)
	Initialize the iterator with the reader it steers and a tree entry number; -1 is invalid.
bool	operator!= (const Iterator_t &lhs) const
	Compare two iterators for inequality.
const Long64_t &	operator* ()
	Set the entry number in the reader and return it.
const Long64_t &	operator* () const
Iterator_t &	operator++ ()
	Increment the iterator (prefix ++i).
Iterator_t	operator++ (int)
	Increment the iterator (postfix i++).
bool	operator== (const Iterator_t &lhs) const
	Compare two iterators for equality.

Private Member Functions
bool	IsValid () const
	Whether the iterator points to a valid entry.

Private Attributes
Long64_t	fEntry
	Entry number of the tree referenced by this iterator; -1 is invalid.
TTreeReader *	fReader
	The reader we select the entries on.

#include <TTreeReader.h>

Member Typedef Documentation

const_pointer

using TTreeReader::Iterator_t::const_pointer = const Long64_t *

Definition at line 70 of file TTreeReader.h.

difference_type

using TTreeReader::Iterator_t::difference_type = Long64_t

Definition at line 68 of file TTreeReader.h.

iterator_category

using TTreeReader::Iterator_t::iterator_category = std::input_iterator_tag

Definition at line 66 of file TTreeReader.h.

pointer

using TTreeReader::Iterator_t::pointer = const Long64_t *

Definition at line 69 of file TTreeReader.h.

reference

using TTreeReader::Iterator_t::reference = const Long64_t &

Definition at line 71 of file TTreeReader.h.

value_type

using TTreeReader::Iterator_t::value_type = const Long64_t

Definition at line 67 of file TTreeReader.h.

Constructor & Destructor Documentation

Iterator_t() [1/2]

TTreeReader::Iterator_t::Iterator_t ( )

inline

Default-initialize the iterator as "past the end".

Definition at line 74 of file TTreeReader.h.

Iterator_t() [2/2]

TTreeReader::Iterator_t::Iterator_t ( TTreeReader & reader, Long64_t entry )

inline

Initialize the iterator with the reader it steers and a tree entry number; -1 is invalid.

Definition at line 78 of file TTreeReader.h.

Member Function Documentation

IsValid()

bool TTreeReader::Iterator_t::IsValid ( ) const

inlineprivate

Whether the iterator points to a valid entry.

Definition at line 63 of file TTreeReader.h.

operator!=()

bool TTreeReader::Iterator_t::operator!= ( const Iterator_t & lhs ) const

inline

Compare two iterators for inequality.

Definition at line 107 of file TTreeReader.h.

operator*() [1/2]

const Long64_t & TTreeReader::Iterator_t::operator* ( )

inline

Set the entry number in the reader and return it.

Definition at line 132 of file TTreeReader.h.

operator*() [2/2]

const Long64_t & TTreeReader::Iterator_t::operator* ( ) const

inline

Definition at line 144 of file TTreeReader.h.

operator++() [1/2]

Iterator_t & TTreeReader::Iterator_t::operator++ ( )

inline

Increment the iterator (prefix ++i).

Definition at line 118 of file TTreeReader.h.

operator++() [2/2]

Iterator_t TTreeReader::Iterator_t::operator++ ( int )

inline

Increment the iterator (postfix i++).

Definition at line 110 of file TTreeReader.h.

operator==()

bool TTreeReader::Iterator_t::operator== ( const Iterator_t & lhs ) const

inline

Compare two iterators for equality.

Definition at line 81 of file TTreeReader.h.

Member Data Documentation

fEntry

Long64_t TTreeReader::Iterator_t::fEntry

private

Entry number of the tree referenced by this iterator; -1 is invalid.

Definition at line 59 of file TTreeReader.h.

fReader

TTreeReader* TTreeReader::Iterator_t::fReader

private

The reader we select the entries on.

Definition at line 60 of file TTreeReader.h.