A doubly linked list.

All classes inheriting from TObject can be inserted in a TList. Before being inserted into the list the object pointer is wrapped in a TObjLink object which contains, besides the object pointer also a previous and next pointer.

There are several ways to iterate over a TList; in order of preference, if not forced by other constraints: 0. (Preferred way) Using the C++ range-based for or begin() / end():

for(const auto&& obj: *GetListOfPrimitives())

obj->Write();

Using the R__FOR_EACH macro:
GetListOfPrimitives()->R__FOR_EACH(TObject,Paint)(option);

TCollection::Paint
virtual void Paint(Option_t *option="")
Paint all objects in this collection.
Definition: TCollection.cxx:415

TObject
Mother of all ROOT objects.
Definition: TObject.h:37
Using the TList iterator TListIter (via the wrapper class TIter):
TIter next(GetListOfPrimitives());

while ((TObject *obj = next()))

obj->Draw(next.GetOption());

TIter
Definition: TCollection.h:233
Using the TList iterator TListIter and std::for_each algorithm:
// A function object, which will be applied to each element

// of the given range.

struct STestFunctor {

bool operator()(TObject *aObj) {

...

return true;

}

}

...

...

TIter iter(mylist);

for_each( iter.Begin(), TIter::End(), STestFunctor() );

TCollection::operator()
TObject * operator()(const char *name) const
Find an object in this collection by name.
Definition: TCollection.cxx:323

TIter::End
static TIter End()
Pointing to the element after the last - to a nullptr value in our case.
Definition: TCollection.cxx:808
Using the TObjLink list entries (that wrap the TObject*):
TObjLink *lnk = GetListOfPrimitives()->FirstLink();

while (lnk) {

lnk->GetObject()->Draw(lnk->GetOption());

lnk = lnk->Next();

}

TObjLink
Wrapper around a TObject so it can be stored in a TList.
Definition: TList.h:127

TObjLink::GetObject
TObject * GetObject() const
Definition: TList.h:149

TObjLink::GetOption
virtual Option_t * GetOption() const
Definition: TList.h:153

TObjLink::Next
TObjLink * Next()
Definition: TList.h:155

TObject::Draw
virtual void Draw(Option_t *option="")
Default Draw method for all objects.
Definition: TObject.cxx:195
Using the TList's After() and Before() member functions:
TFree *idcur = this;

while (idcur) {

...

...

idcur = (TFree*)GetListOfFree()->After(idcur);

}

TFree
Service class for TFile.
Definition: TFree.h:27

Methods 2, 3 and 4 can also easily iterate backwards using either a backward TIter (using argument kIterBackward) or by using LastLink() and lnk->Prev() or by using the Before() member.

Definition at line 44 of file TList.h.

Public Types
typedef TListIter	Iterator_t

Public Types inherited from TCollection
enum	{ kInitCapacity = 16 , kInitHashTableCapacity = 17 }

Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = BIT(0) , kOverwrite = BIT(1) , kWriteDelete = BIT(2) }

enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }

enum	EStatusBits { kCanDelete = BIT(0) , kMustCleanup = BIT(3) , kIsReferenced = BIT(4) , kHasUUID = BIT(5) , kCannotPick = BIT(6) , kNoContextMenu = BIT(8) , kInvalidObject = BIT(13) }

Public Member Functions
	TList ()

	TList (TObject *)

virtual	~TList ()
	Delete the list. More...

virtual void	Add (TObject *obj)

virtual void	Add (TObject obj, Option_t opt)

virtual void	AddAfter (const TObject after, TObject obj)
	Insert object after object after in the list. More...

virtual void	AddAfter (TObjLink after, TObject obj)
	Insert object after the specified ObjLink object. More...

virtual void	AddAt (TObject *obj, Int_t idx)
	Insert object at position idx in the list. More...

virtual void	AddBefore (const TObject before, TObject obj)
	Insert object before object before in the list. More...

virtual void	AddBefore (TObjLink before, TObject obj)
	Insert object before the specified ObjLink object. More...

virtual void	AddFirst (TObject *obj)
	Add object at the beginning of the list. More...

virtual void	AddFirst (TObject obj, Option_t opt)
	Add object at the beginning of the list and also store option. More...

virtual void	AddLast (TObject *obj)
	Add object at the end of the list. More...

virtual void	AddLast (TObject obj, Option_t opt)
	Add object at the end of the list and also store option. More...

virtual TObject *	After (const TObject *obj) const
	Returns the object after object obj. More...

virtual TObject *	At (Int_t idx) const
	Returns the object at position idx. Returns 0 if idx is out of range. More...

virtual TObject *	Before (const TObject *obj) const
	Returns the object before object obj. More...

virtual void	Clear (Option_t *option="")
	Remove all objects from the list. More...

virtual void	Delete (Option_t *option="")
	Remove all objects from the list AND delete all heap based objects. More...

virtual TObject *	FindObject (const char *name) const
	Delete a TObjLink object. More...

virtual TObject *	FindObject (const TObject *obj) const
	Find an object in this list using the object's IsEqual() member function. More...

virtual TObject *	First () const
	Return the first object in the list. Returns 0 when list is empty. More...

virtual TObjLink *	FirstLink () const

virtual TObject **	GetObjectRef (const TObject *obj) const
	Return address of pointer to obj. More...

Bool_t	IsAscending ()

virtual TObject *	Last () const
	Return the last object in the list. Returns 0 when list is empty. More...

virtual TObjLink *	LastLink () const

virtual TIterator *	MakeIterator (Bool_t dir=kIterForward) const
	Return a list iterator. More...

virtual void	RecursiveRemove (TObject *obj)
	Remove object from this collection and recursively remove the object from all other objects (and collections). More...

TObject *	Remove (const TObjLinkPtr_t &lnk)

virtual TObject *	Remove (TObject *obj)
	Remove object from the list. More...

virtual TObject *	Remove (TObjLink *lnk)
	Remove object link (and therefore the object it contains) from the list. More...

virtual void	RemoveLast ()
	Remove the last object of the list. More...

virtual void	Sort (Bool_t order=kSortAscending)
	Sort linked list. More...

Public Member Functions inherited from TSeqCollection
virtual	~TSeqCollection ()

virtual void	Add (TObject *obj)

virtual void	AddAfter (const TObject after, TObject obj)=0

virtual void	AddAt (TObject *obj, Int_t idx)=0

virtual void	AddBefore (const TObject before, TObject obj)=0

virtual void	AddFirst (TObject *obj)=0

virtual void	AddLast (TObject *obj)=0

virtual TObject *	After (const TObject *obj) const =0

virtual TObject *	At (Int_t idx) const =0

virtual TObject *	Before (const TObject *obj) const =0

virtual TObject *	First () const =0

virtual Int_t	GetLast () const
	Returns index of last object in collection. More...

virtual Int_t	IndexOf (const TObject *obj) const
	Return index of object in collection. More...

virtual Bool_t	IsSorted () const

virtual TObject *	Last () const =0

Int_t	LastIndex () const

Long64_t	Merge (TCollection *list)
	Merge this collection with all collections coming in the input list. More...

virtual void	RemoveAfter (TObject *after)

virtual TObject *	RemoveAt (Int_t idx)

virtual void	RemoveBefore (TObject *before)

virtual void	RemoveFirst ()

virtual void	RemoveLast ()

void	UnSort ()

Public Member Functions inherited from TCollection
virtual	~TCollection ()
	TNamed destructor. More...

virtual void	Add (TObject *obj)=0

virtual void	AddAll (const TCollection *col)
	Add all objects from collection col to this collection. More...

void	AddVector (TObject *obj1,...)
	Add all arguments to the collection. More...

Bool_t	AssertClass (TClass *cl) const
	Make sure all objects in this collection inherit from class cl. More...

TIter	begin () const

void	Browse (TBrowser *b)
	Browse this collection (called by TBrowser). More...

Int_t	Capacity () const

virtual void	Clear (Option_t *option="")=0

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an collection using the Streamer facility. More...

Int_t	Compare (const TObject *obj) const
	Compare two TCollection objects. More...

Bool_t	Contains (const char *name) const

Bool_t	Contains (const TObject *obj) const

virtual void	Delete (Option_t *option="")=0
	Delete this object. More...

virtual void	Draw (Option_t *option="")
	Draw all objects in this collection. More...

virtual void	Dump () const
	Dump all objects in this collection. More...

TIter	end () const

virtual TObject *	FindObject (const char *name) const
	Find an object in this collection using its name. More...

virtual TObject *	FindObject (const TObject *obj) const
	Find an object in this collection using the object's IsEqual() member function. More...

virtual Int_t	GetEntries () const

virtual const char *	GetName () const
	Return name of this collection. More...

virtual TObject **	GetObjectRef (const TObject *obj) const =0

virtual Int_t	GetSize () const
	Return the capacity of the collection, i.e. More...

virtual Int_t	GrowBy (Int_t delta) const
	Increase the collection's capacity by delta slots. More...

ULong_t	Hash () const
	Return hash value for this object. More...

Bool_t	IsArgNull (const char where, const TObject obj) const
	Returns true if object is a null pointer. More...

virtual Bool_t	IsEmpty () const

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...

Bool_t	IsOwner () const

Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsUsingRWLock () const

virtual void	ls (Option_t *option="") const
	List (ls) all objects in this collection. More...

virtual TIterator *	MakeIterator (Bool_t dir=kIterForward) const =0

virtual TIterator *	MakeReverseIterator () const

virtual Bool_t	Notify ()
	'Notify' all objects in this collection. More...

TObject *	operator() (const char *name) const
	Find an object in this collection by name. More...

virtual void	Paint (Option_t *option="")
	Paint all objects in this collection. More...

virtual void	Print (Option_t option, const char wildcard, Int_t recurse=1) const
	Print the collection header and its elements that match the wildcard. More...

virtual void	Print (Option_t *option, Int_t recurse) const
	Print the collection header and its elements. More...

virtual void	Print (Option_t *option, TPRegexp &regexp, Int_t recurse=1) const
	Print the collection header and its elements that match the regexp. More...

virtual void	Print (Option_t *option="") const
	Default print for collections, calls Print(option, 1). More...

virtual void	RecursiveRemove (TObject *obj)
	Remove object from this collection and recursively remove the object from all other objects (and collections). More...

virtual TObject *	Remove (TObject *obj)=0

void	RemoveAll ()

virtual void	RemoveAll (TCollection *col)
	Remove all objects in collection col from this collection. More...

void	SetCurrentCollection ()
	Set this collection to be the globally accesible collection. More...

void	SetName (const char *name)

virtual void	SetOwner (Bool_t enable=kTRUE)
	Set whether this collection is the owner (enable==true) of its content. More...

virtual bool	UseRWLock ()
	Set this collection to use a RW lock upon access, making it thread safe. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write all objects in this collection. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write all objects in this collection. More...

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor. More...

	TObject (const TObject &object)
	TObject copy ctor. More...

virtual	~TObject ()
	TObject destructor. More...

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad. More...

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action. More...

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More...

virtual const char *	ClassName () const
	Returns name of class to which the object belongs. More...

virtual void	Clear (Option_t *="")

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility. More...

virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method. More...

virtual void	Copy (TObject &object) const
	Copy this to obj. More...

virtual void	Delete (Option_t *option="")
	Delete this object. More...

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object. More...

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects. More...

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs. More...

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`. More...

virtual void	Dump () const
	Dump contents of object on stdout. More...

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message. More...

virtual void	Execute (const char method, const char params, Int_t *error=0)
	Execute method on this object with the given parameter string, e.g. More...

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray. More...

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py). More...

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message. More...

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes. More...

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object. More...

virtual const char *	GetIconName () const
	Returns mime type name of object. More...

virtual const char *	GetName () const
	Returns name of object. More...

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py). More...

virtual Option_t *	GetOption () const

virtual const char *	GetTitle () const
	Returns title of object. More...

virtual UInt_t	GetUniqueID () const
	Return the unique object id. More...

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out. More...

virtual ULong_t	Hash () const
	Return hash value for this object. More...

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. More...

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message. More...

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname". More...

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl. More...

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas. More...

void	InvertBit (UInt_t f)

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory). More...

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout. More...

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification. More...

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete. More...

void	operator delete (void *ptr)
	Operator delete. More...

void	operator delete[] (void *ptr)
	Operator delete []. More...

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator. More...

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself. More...

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list. More...

virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself. More...

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory. More...

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list. More...

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename. More...

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out". More...

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f. More...

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object. More...

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id. More...

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message. More...

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory. More...

Protected Types
using	TObjLinkPtr_t = std::shared_ptr< TObjLink >

using	TObjLinkWeakPtr_t = std::weak_ptr< TObjLink >

Protected Types inherited from TCollection
enum	EStatusBits { kIsOwner = BIT(14) , kUseRWLock = BIT(16) }

Protected Member Functions
TObjLinkPtr_t *	DoSort (TObjLinkPtr_t *head, Int_t n)
	Sort linked list. More...

TObjLink *	FindLink (const TObject *obj, Int_t &idx) const
	Returns the TObjLink object that contains object obj. More...

void	InsertAfter (const TObjLinkPtr_t &newlink, const TObjLinkPtr_t &prev)
	Insert a new link in the chain. More...

TObjLink *	LinkAt (Int_t idx) const
	sorting order (when calling Sort() or for TSortedList) More...

Bool_t	LnkCompare (const TObjLinkPtr_t &l1, const TObjLinkPtr_t &l2)
	Compares the objects stored in the TObjLink objects. More...

TObjLinkPtr_t	NewLink (TObject *obj, const TObjLinkPtr_t &prev=nullptr)
	Return a new TObjLink. More...

TObjLinkPtr_t	NewLink (TObject obj, TObjLink prev)

TObjLinkPtr_t	NewOptLink (TObject obj, Option_t opt, const TObjLinkPtr_t &prev=nullptr)
	Return a new TObjOptLink (a TObjLink that also stores the option). More...

TObjLinkPtr_t	NewOptLink (TObject obj, Option_t opt, TObjLink *prev)

Protected Member Functions inherited from TSeqCollection
	TSeqCollection ()

virtual void	Changed ()

Protected Member Functions inherited from TCollection
	TCollection ()

virtual const char *	GetCollectionEntryName (TObject *entry) const
	For given collection entry return the string that is used to identify the object and, potentially, perform wildcard/regexp filtering on. More...

virtual void	PrintCollectionEntry (TObject entry, Option_t option, Int_t recurse) const
	Print the collection entry. More...

virtual void	PrintCollectionHeader (Option_t *option) const
	Print the collection header. More...

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected). More...

void	MakeZombie ()

Protected Attributes
Bool_t	fAscending
	cache to speedup sequential calling of Before() and After() functions More...

TObjLinkWeakPtr_t	fCache
	pointer to last entry in linked list More...

TObjLinkPtr_t	fFirst

TObjLinkPtr_t	fLast
	pointer to first entry in linked list More...

Protected Attributes inherited from TSeqCollection
Bool_t	fSorted

Protected Attributes inherited from TCollection
TString	fName

Int_t	fSize

Private Member Functions
	TList (const TList &)

TList &	operator= (const TList &)

Friends
class	TListIter

Additional Inherited Members
Static Public Member Functions inherited from TSeqCollection
static Int_t	ObjCompare (TObject a, TObject b)
	Compare to objects in the collection. Use member Compare() of object a. More...

static void	QSort (TObject **a, Int_t first, Int_t last)
	Sort array of TObject pointers using a quicksort algorithm. More...

static void	QSort (TObject a, Int_t nBs, TObject *b, Int_t first, Int_t last)
	Sort array a of TObject pointers using a quicksort algorithm. More...

static void	QSort (TObject a, TObject b, Int_t first, Int_t last)

Static Public Member Functions inherited from TCollection
static void	EmptyGarbageCollection ()
	Do the garbage collection. More...

static void	GarbageCollect (TObject *obj)
	Add to the list of things to be cleaned up. More...

static TCollection *	GetCurrentCollection ()
	Return the globally accessible collection. More...

static void	StartGarbageCollection ()
	Set up for garbage collection. More...

Static Public Member Functions inherited from TObject
static Long_t	GetDtorOnly ()
	Return destructor only flag. More...

static Bool_t	GetObjectStat ()
	Get status of object stat flag. More...

static void	SetDtorOnly (void *obj)
	Set destructor only flag. More...

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable. More...

#include <TList.h>

Inheritance diagram for TList:

[legend]

Member Typedef Documentation

◆ Iterator_t

typedef TListIter TList::Iterator_t

Definition at line 76 of file TList.h.

◆ TObjLinkPtr_t

using TList::TObjLinkPtr_t = std::shared_ptr<TObjLink>

protected

Definition at line 49 of file TList.h.

◆ TObjLinkWeakPtr_t

using TList::TObjLinkWeakPtr_t = std::weak_ptr<TObjLink>

protected

Definition at line 50 of file TList.h.

Constructor & Destructor Documentation

◆ TList() [1/3]

TList::TList ( const TList & )

private

◆ TList() [2/3]

TList::TList ( )

inline

Definition at line 78 of file TList.h.

◆ TList() [3/3]

TList::TList ( TObject * )

inline

Definition at line 79 of file TList.h.

◆ ~TList()

TList::~TList ( )

virtual

Delete the list.

Objects are not deleted unless the TList is the owner (set via SetOwner()).

Definition at line 89 of file TList.cxx.

Member Function Documentation

◆ Add() [1/2]

virtual void TList::Add ( TObject * obj )

inlinevirtual

Reimplemented from TSeqCollection.

Reimplemented in TQCommand, TQUndoManager, and TSortedList.

Definition at line 87 of file TList.h.

◆ Add() [2/2]

virtual void TList::Add	(	TObject *	obj,
		Option_t *	opt
	)

inlinevirtual

Reimplemented in TQCommand, TQUndoManager, and TSortedList.

Definition at line 88 of file TList.h.

◆ AddAfter() [1/2]

void TList::AddAfter	(	const TObject *	after,
		TObject *	obj
	)

virtual

Insert object after object after in the list.

Implements TSeqCollection.

Reimplemented in TSortedList, THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 247 of file TList.cxx.

◆ AddAfter() [2/2]

void TList::AddAfter	(	TObjLink *	after,
		TObject *	obj
	)

virtual

Insert object after the specified ObjLink object.

If after = 0 then add to the tail of the list. An ObjLink can be obtained by looping over a list using the above describe iterator method 3.

Reimplemented in TSortedList, THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 279 of file TList.cxx.

◆ AddAt()

void TList::AddAt	(	TObject *	obj,
		Int_t	idx
	)

virtual

Insert object at position idx in the list.

Implements TSeqCollection.

Reimplemented in THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, TListOfEnumsWithLock, and TSortedList.

Definition at line 303 of file TList.cxx.

◆ AddBefore() [1/2]

void TList::AddBefore	(	const TObject *	before,
		TObject *	obj
	)

virtual

Insert object before object before in the list.

Implements TSeqCollection.

Reimplemented in TSortedList, THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 193 of file TList.cxx.

◆ AddBefore() [2/2]

void TList::AddBefore	(	TObjLink *	before,
		TObject *	obj
	)

virtual

Insert object before the specified ObjLink object.

If before = 0 then add to the head of the list. An ObjLink can be obtained by looping over a list using the above describe iterator method 3.

Reimplemented in TSortedList, THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 225 of file TList.cxx.

◆ AddFirst() [1/2]

void TList::AddFirst ( TObject * obj )

virtual

Add object at the beginning of the list.

Implements TSeqCollection.

Reimplemented in THashList, TSortedList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 97 of file TList.cxx.

◆ AddFirst() [2/2]

void TList::AddFirst	(	TObject *	obj,
		Option_t *	opt
	)

virtual

Add object at the beginning of the list and also store option.

Storing an option is useful when one wants to change the behaviour of an object a little without having to create a complete new copy of the object. This feature is used, for example, by the Draw() method. It allows the same object to be drawn in different ways.

Reimplemented in THashList, TSortedList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 125 of file TList.cxx.

◆ AddLast() [1/2]

void TList::AddLast ( TObject * obj )

virtual

Add object at the end of the list.

Implements TSeqCollection.

Reimplemented in THashList, TSortedList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 149 of file TList.cxx.

◆ AddLast() [2/2]

void TList::AddLast	(	TObject *	obj,
		Option_t *	opt
	)

virtual

Add object at the end of the list and also store option.

Storing an option is useful when one wants to change the behaviour of an object a little without having to create a complete new copy of the object. This feature is used, for example, by the Draw() method. It allows the same object to be drawn in different ways.

Reimplemented in THashList, TSortedList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TSelectorList, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 173 of file TList.cxx.

◆ After()

TObject * TList::After ( const TObject * obj ) const

virtual

Returns the object after object obj.

Obj is found using the object's IsEqual() method. Returns 0 if obj is last in list.

Implements TSeqCollection.

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 327 of file TList.cxx.

◆ At()

TObject * TList::At ( Int_t idx ) const

virtual

Returns the object at position idx. Returns 0 if idx is out of range.

Implements TSeqCollection.

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 354 of file TList.cxx.

◆ Before()

TObject * TList::Before ( const TObject * obj ) const

virtual

Returns the object before object obj.

Obj is found using the object's IsEqual() method. Returns 0 if obj is first in list.

Implements TSeqCollection.

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 368 of file TList.cxx.

◆ Clear()

void TList::Clear ( Option_t * option = "" )

virtual

Remove all objects from the list.

Does not delete the objects unless the TList is the owner (set via SetOwner()) and option "nodelete" is not set. If option="nodelete" then don't delete any heap objects that were marked with the kCanDelete bit, otherwise these objects will be deleted (this option is used by THashTable::Clear()).

Implements TCollection.

Reimplemented in TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TListOfEnums, TListOfEnumsWithLock, THashList, TViewPubDataMembers, and TViewPubFunctions.

Definition at line 399 of file TList.cxx.

◆ Delete()

void TList::Delete ( Option_t * option = "" )

virtual

Remove all objects from the list AND delete all heap based objects.

If option="slow" then keep list consistent during delete. This allows recursive list operations during the delete (e.g. during the dtor of an object in this list one can still access the list to search for other not yet deleted objects).

Implements TCollection.

Reimplemented in TQCommand, THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 467 of file TList.cxx.

◆ DoSort()

std::shared_ptr< TObjLink > * TList::DoSort	(	TObjLinkPtr_t *	head,
		Int_t	n
	)

protected

Sort linked list.

Definition at line 980 of file TList.cxx.

◆ FindLink()

TObjLink * TList::FindLink	(	const TObject *	obj,
		Int_t &	idx
	)		const

protected

Returns the TObjLink object that contains object obj.

In idx it returns the position of the object in the list.

Definition at line 624 of file TList.cxx.

◆ FindObject() [1/2]

TObject * TList::FindObject ( const char * name ) const

virtual

Delete a TObjLink object.

Find an object in this list using its name. Requires a sequential scan till the object has been found. Returns 0 if object with specified name is not found. This method overrides the generic FindObject() of TCollection for efficiency reasons.

Reimplemented from TCollection.

Reimplemented in THashList, TListOfDataMembers, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 574 of file TList.cxx.

◆ FindObject() [2/2]

TObject * TList::FindObject ( const TObject * obj ) const

virtual

Find an object in this list using the object's IsEqual() member function.

Requires a sequential scan till the object has been found. Returns 0 if object is not found. This method overrides the generic FindObject() of TCollection for efficiency reasons.

Reimplemented from TCollection.

Reimplemented in THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 601 of file TList.cxx.

◆ First()

TObject * TList::First ( ) const

virtual

Return the first object in the list. Returns 0 when list is empty.

Implements TSeqCollection.

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 655 of file TList.cxx.

◆ FirstLink()

virtual TObjLink * TList::FirstLink ( ) const

inlinevirtual

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 108 of file TList.h.

◆ GetObjectRef()

TObject ** TList::GetObjectRef ( const TObject * obj ) const

virtual

Return address of pointer to obj.

Implements TCollection.

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 667 of file TList.cxx.

◆ InsertAfter()

void TList::InsertAfter	(	const TObjLinkPtr_t &	newlink,
		const TObjLinkPtr_t &	prev
	)

protected

Insert a new link in the chain.

Definition at line 1031 of file TList.cxx.

◆ IsAscending()

Bool_t TList::IsAscending ( )

inline

Definition at line 114 of file TList.h.

◆ Last()

TObject * TList::Last ( ) const

virtual

Return the last object in the list. Returns 0 when list is empty.

Implements TSeqCollection.

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 689 of file TList.cxx.

◆ LastLink()

virtual TObjLink * TList::LastLink ( ) const

inlinevirtual

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 111 of file TList.h.

◆ LinkAt()

TObjLink * TList::LinkAt ( Int_t idx ) const

protected

sorting order (when calling Sort() or for TSortedList)

Return the TObjLink object at index idx.

Definition at line 701 of file TList.cxx.

◆ LnkCompare()

Bool_t TList::LnkCompare	(	const TObjLinkPtr_t &	l1,
		const TObjLinkPtr_t &	l2
	)

protected

Compares the objects stored in the TObjLink objects.

Depending on the flag IsAscending() the function returns true if the object in l1 <= l2 (ascending) or l2 <= l1 (descending).

Definition at line 968 of file TList.cxx.

◆ MakeIterator()

TIterator * TList::MakeIterator ( Bool_t dir = kIterForward ) const

virtual

Return a list iterator.

Implements TCollection.

Reimplemented in TListOfFunctions, TViewPubDataMembers, TViewPubFunctions, and TListOfEnumsWithLock.

Definition at line 718 of file TList.cxx.

◆ NewLink() [1/2]

TList::TObjLinkPtr_t TList::NewLink	(	TObject *	obj,
		const TObjLinkPtr_t &	prev = `nullptr`
	)

protected

Return a new TObjLink.

Definition at line 729 of file TList.cxx.

◆ NewLink() [2/2]

TList::TObjLinkPtr_t TList::NewLink	(	TObject *	obj,
		TObjLink *	prev
	)

inlineprotected

Definition at line 241 of file TList.h.

◆ NewOptLink() [1/2]

TList::TObjLinkPtr_t TList::NewOptLink	(	TObject *	obj,
		Option_t *	opt,
		const TObjLinkPtr_t &	prev = `nullptr`
	)

protected

Return a new TObjOptLink (a TObjLink that also stores the option).

Definition at line 744 of file TList.cxx.

◆ NewOptLink() [2/2]

TList::TObjLinkPtr_t TList::NewOptLink	(	TObject *	obj,
		Option_t *	opt,
		TObjLink *	prev
	)

inlineprotected

Definition at line 244 of file TList.h.

◆ operator=()

TList & TList::operator= ( const TList & )

private

◆ RecursiveRemove()

void TList::RecursiveRemove ( TObject * obj )

virtual

Remove object from this collection and recursively remove the object from all other objects (and collections).

Reimplemented from TCollection.

Reimplemented in THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 760 of file TList.cxx.

◆ Remove() [1/3]

TObject * TList::Remove ( const TObjLinkPtr_t & lnk )

inline

Definition at line 100 of file TList.h.

◆ Remove() [2/3]

TObject * TList::Remove ( TObject * obj )

virtual

Remove object from the list.

Implements TCollection.

Reimplemented in THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 818 of file TList.cxx.

◆ Remove() [3/3]

TObject * TList::Remove ( TObjLink * lnk )

virtual

Remove object link (and therefore the object it contains) from the list.

Reimplemented in THashList, TListOfDataMembers, TListOfFunctions, TListOfFunctionTemplates, TViewPubDataMembers, TViewPubFunctions, TListOfEnums, and TListOfEnumsWithLock.

Definition at line 866 of file TList.cxx.

◆ RemoveLast()

void TList::RemoveLast ( )

virtual

Remove the last object of the list.

Reimplemented from TSeqCollection.

Definition at line 905 of file TList.cxx.

◆ Sort()

void TList::Sort ( Bool_t order = kSortAscending )

virtual

Sort linked list.

Real sorting is done in private function DoSort(). The list can only be sorted when is contains objects of a sortable class.

Reimplemented in TSortedList.

Definition at line 933 of file TList.cxx.

Friends And Related Function Documentation

◆ TListIter

friend class TListIter

friend

Definition at line 46 of file TList.h.

Member Data Documentation

◆ fAscending

Bool_t TList::fAscending

protected

cache to speedup sequential calling of Before() and After() functions

Definition at line 55 of file TList.h.

◆ fCache

TObjLinkWeakPtr_t TList::fCache

protected

pointer to last entry in linked list

Definition at line 54 of file TList.h.

◆ fFirst

TObjLinkPtr_t TList::fFirst

protected

Definition at line 52 of file TList.h.

◆ fLast

TObjLinkPtr_t TList::fLast

protected

pointer to first entry in linked list

Definition at line 53 of file TList.h.

Libraries for TList:

[legend]

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Private Member Functions

Friends

Additional Inherited Members

Member Typedef Documentation

◆ Iterator_t

◆ TObjLinkPtr_t

◆ TObjLinkWeakPtr_t

Constructor & Destructor Documentation

◆ TList() [1/3]

◆ TList() [2/3]

◆ TList() [3/3]

◆ ~TList()

Member Function Documentation

◆ Add() [1/2]

◆ Add() [2/2]

◆ AddAfter() [1/2]

◆ AddAfter() [2/2]

◆ AddAt()

◆ AddBefore() [1/2]

◆ AddBefore() [2/2]

◆ AddFirst() [1/2]

◆ AddFirst() [2/2]

◆ AddLast() [1/2]

◆ AddLast() [2/2]

◆ After()

◆ At()

◆ Before()

◆ Clear()

◆ Delete()

◆ DoSort()

◆ FindLink()

◆ FindObject() [1/2]

◆ FindObject() [2/2]

◆ First()

◆ FirstLink()

◆ GetObjectRef()

◆ InsertAfter()

◆ IsAscending()

◆ Last()

◆ LastLink()

◆ LinkAt()

◆ LnkCompare()

◆ MakeIterator()

◆ NewLink() [1/2]

◆ NewLink() [2/2]

◆ NewOptLink() [1/2]

◆ NewOptLink() [2/2]

◆ operator=()

◆ RecursiveRemove()

◆ Remove() [1/3]

◆ Remove() [2/3]

◆ Remove() [3/3]

◆ RemoveLast()

◆ Sort()

Friends And Related Function Documentation

◆ TListIter

Member Data Documentation

◆ fAscending

◆ fCache

◆ fFirst

◆ fLast