RooArgSet is a container object that can hold multiple RooAbsArg objects.

The container has set semantics which means that:

Every object it contains must have a unique name returned by GetName().
Contained objects are not ordered, although the set can be traversed using an iterator returned by createIterator(). The iterator does not necessarily follow the object insertion order.
Objects can be retrieved by name only, and not by index.

Ownership of contents

Unowned objects are inserted with the add() method. Owned objects are added with addOwned() or addClone(). A RooArgSet either owns all of it contents, or none, which is determined by the first add call. Once an ownership status is selected, inappropriate add calls will return error status. Clearing the list via removeAll() resets the ownership status. Arguments supplied in the constructor are always added as unowned elements.

Uniquely identifying RooArgSet objects

Warning: Before v6.28, it was ensured that no RooArgSet objects on the heap were located at an address that had already been used for a RooArgSet before. With v6.28, this is not guaranteed anymore. Hence, if your code uses pointer comparisons to uniquely identify RooArgSet instances, please consider using the new RooArgSet::uniqueId().

Definition at line 55 of file RooArgSet.h.

Public Member Functions
	RooArgSet ()
	Default constructor.

	RooArgSet (const char *name)
	Empty set constructor.

template<typename... Args_t>
	RooArgSet (const RooAbsArg &arg, Args_t &&... moreArgsOrName)
	Construct a (non-owning) RooArgSet from one or more RooFit objects.

	RooArgSet (const RooAbsCollection &coll)
	Constructor from a RooArgList.

	RooArgSet (const RooAbsCollection &collection, const RooAbsArg *var1)
	Constructor from a RooArgSet / RooArgList and a pointer to another RooFit object.

	RooArgSet (const RooArgSet &other, const char *name="")
	Copy constructor.

	RooArgSet (const RooArgSet &set1, const RooArgSet &set2, const char *name="")
	Construct a set from two existing sets.

	RooArgSet (const TCollection &tcoll, const char *name="")
	Constructor from a root TCollection.

template<typename... Args_t>
	RooArgSet (double arg, Args_t &&... moreArgsOrName)

template<typename Iterator_t , typename value_type = typename std::remove_pointer<typename std::iterator_traits<Iterator_t>::value_type>::type, typename = std::enable_if<std::is_convertible<const value_type, const RooAbsArg>::value>>
	RooArgSet (Iterator_t beginIt, Iterator_t endIt, const char *name="")
	Construct a (non-owning) RooArgSet from iterators.

template<typename... Args_t>
	RooArgSet (RooAbsArg &&arg, Args_t &&... moreArgsOrName)
	This constructor will provoke a `static_assert`, because passing a RooAbsArg as r-value reference is not allowed.

	RooArgSet (RooArgSet &&other)
	Move constructor.

	RooArgSet (std::vector< RooAbsArgPtrOrDouble > const &vec)
	Construct a non-owning RooArgSet from a vector of RooAbsArg pointers.

	~RooArgSet () override
	Destructor.

TObject *	clone (const char *newname) const override

bool	containsInstance (const RooAbsArg &var) const override
	Check if this exact instance is in this collection.

TObject *	create (const char *newname) const override

TClass *	IsA () const override

bool	isInRange (const char *rangeSpec)

RooArgSet &	operator= (const RooArgSet &other)

RooAbsArg &	operator[] (const TString &str) const
	Get reference to an element using its name.

bool	readFromFile (const char fileName, const char flagReadAtt=nullptr, const char *section=nullptr, bool verbose=false)
	Read contents of the argset from specified file.

virtual bool	readFromStream (std::istream &is, bool compact, bool verbose=false)
	Shortcut for readFromStream(std::istream&, bool, const char, const char, bool), setting `flagReadAtt` and `section` to 0.

bool	readFromStream (std::istream &is, bool compact, const char flagReadAtt, const char section, bool verbose=false)
	Read the contents of the argset in ASCII form from given stream.

RooArgSet *	snapshot (bool deepCopy=true) const
	Use RooAbsCollection::snapshot(), but return as RooArgSet.

bool	snapshot (RooAbsCollection &output, bool deepCopy=true) const
	Take a snap shot of current collection contents.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

void	writeToFile (const char *fileName) const
	Write contents of the argset to specified file.

virtual void	writeToStream (std::ostream &os, bool compact, const char *section=nullptr) const
	Write the contents of the argset in ASCII form to given stream.

Public Member Functions inherited from RooAbsCollection
	RooAbsCollection ()
	Default constructor.

	RooAbsCollection (const char *name)
	Empty collection constructor.

	RooAbsCollection (const RooAbsCollection &other, const char *name="")
	Copy constructor.

	RooAbsCollection (RooAbsCollection &&other)
	Move constructor.

	~RooAbsCollection () override
	Destructor.

virtual bool	add (const RooAbsArg &var, bool silent=false)
	Add the specified argument to list.

bool	add (const RooAbsCollection &list, bool silent=false)
	Add a collection of arguments to this collection by calling add() for each element in the source collection.

template<typename Iterator_t , typename value_type = typename std::remove_pointer<typename std::iterator_traits<Iterator_t>::value_type>, typename = std::enable_if<std::is_convertible<const value_type, const RooAbsArg>::value>>
bool	add (Iterator_t beginIt, Iterator_t endIt, bool silent=false)

virtual RooAbsArg *	addClone (const RooAbsArg &var, bool silent=false)
	Add a clone of the specified argument to list.

virtual void	addClone (const RooAbsCollection &list, bool silent=false)
	Add a collection of arguments to this collection by calling addOwned() for each element in the source collection.

virtual bool	addOwned (const RooAbsCollection &list, bool silent=false)
	for each element in the source collection.

virtual bool	addOwned (RooAbsArg &var, bool silent=false)
	Add an argument and transfer the ownership to the collection.

bool	addOwned (RooAbsCollection &&list, bool silent=false)
	Add a collection of arguments to this collection by calling addOwned() for each element in the source collection.

bool	addOwned (std::unique_ptr< RooAbsArg > var, bool silent=false)
	Add an argument and transfer the ownership to the collection from a `std::unique_ptr`.

bool	allInRange (const char *rangeSpec) const
	Return true if all contained object report to have their value inside the specified range.

void	assign (const RooAbsCollection &other) const
	Sets the value, cache and constant attribute of any argument in our set that also appears in the other set.

void	assignFast (const RooAbsCollection &other, bool setValDirty=true) const
	Functional equivalent of assign() but assumes this and other collection have same layout.

RooAbsCollection &	assignValueOnly (const RooAbsCollection &other, bool forceIfSizeOne=false)
	Sets the value of any argument in our set that also appears in the other set.

const_iterator	begin () const

void	clear ()
	Clear contents. If the collection is owning, it will also delete the contents.

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

bool	contains (const RooAbsArg &var) const
	Check if collection contains an argument with the same name as var.

std::string	contentsString () const
	Return comma separated list of contained object names as STL string.

TIterator *	createIterator (bool dir=kIterForward) const
	TIterator-style iteration over contained elements.

Int_t	defaultPrintContents (Option_t *opt) const override
	Define default RooPrinable print options for given Print() flag string For inline printing only show value of objects, for default print show name,class name value and extras of each object.

void	dump () const
	Base contents dumper for debugging purposes.

bool	empty () const

const_iterator	end () const

bool	equals (const RooAbsCollection &otherColl) const
	Check if this and other collection have identically-named contents.

RooAbsArg *	find (const char *name) const
	Find object with given name in list.

RooAbsArg *	find (const RooAbsArg &) const
	Find object with given name in list.

TObject *	FindObject (const char *name) const override
	Find object by name in the collection.

TObject *	FindObject (const TObject *obj) const override
	Find object in the collection, Note: matching by object name, like the find() method.

RooAbsArg *	first () const

RooFIter	fwdIterator () const
	One-time forward iterator.

Storage_t const &	get () const
	Const access to the underlying stl container.

Int_t	getCatIndex (const char *name, Int_t defVal=0, bool verbose=false) const
	Get index value of a RooAbsCategory stored in set with given name.

const char *	getCatLabel (const char name, const char defVal="", bool verbose=false) const
	Get state name of a RooAbsCategory stored in set with given name.

Int_t	getHashTableSize () const
	Query the size at which the collection will automatically start using an extra lookup table instead of performing a linear search.

const char *	GetName () const override
	Returns name of object.

double	getRealValue (const char *name, double defVal=0.0, bool verbose=false) const
	Get value of a RooAbsReal stored in set with given name.

Int_t	getSize () const
	Return the number of elements in the collection.

const char *	getStringValue (const char name, const char defVal="", bool verbose=false) const
	Get string value of a RooStringVar stored in set with given name.

bool	hasSameLayout (const RooAbsCollection &other) const
	Check that all entries where the collections overlap have the same name.

Int_t	index (const char *name) const
	Return index of item with given name, or -1 in case it's not in the collection.

Int_t	index (const RooAbsArg &arg) const
	Returns index of given arg, or -1 if arg is not in the collection.

Int_t	index (const RooAbsArg *arg) const
	Returns index of given arg, or -1 if arg is not in the collection.

bool	isOwning () const

RooLinkedListIter	iterator (bool dir=kIterForward) const
	TIterator-style iteration over contained elements.

RooAbsCollection &	operator= (const RooAbsCollection &other)
	Assign values from the elements in `other` to our elements.

RooAbsArg *	operator[] (Storage_t::size_type i) const

bool	overlaps (const RooAbsCollection &otherColl) const
	Check if this and other collection have common entries.

template<typename Iterator_t , typename value_type = typename std::remove_pointer<typename std::iterator_traits<Iterator_t>::value_type>, typename = std::enable_if<std::is_convertible<const value_type, const RooAbsArg>::value>>
bool	overlaps (Iterator_t otherCollBegin, Iterator_t otherCollEnd) const

void	Print (Option_t *options=nullptr) const override
	This method must be overridden when a class wants to print itself.

void	printClassName (std::ostream &os) const override
	Return collection class name.

void	printLatex (const RooCmdArg &arg1=RooCmdArg(), const RooCmdArg &arg2=RooCmdArg(), const RooCmdArg &arg3=RooCmdArg(), const RooCmdArg &arg4=RooCmdArg(), const RooCmdArg &arg5=RooCmdArg(), const RooCmdArg &arg6=RooCmdArg(), const RooCmdArg &arg7=RooCmdArg(), const RooCmdArg &arg8=RooCmdArg()) const
	Output content of collection as LaTex table.

void	printLatex (std::ostream &ofs, Int_t ncol, const char option="NEYU", Int_t sigDigit=1, const RooLinkedList &siblingLists=RooLinkedList(), const RooCmdArg formatCmd=nullptr) const
	Internal implementation function of printLatex.

void	printMultiline (std::ostream &os, Int_t contents, bool verbose=false, TString indent="") const override
	Implement multiline printing of collection, one line for each contained object showing the requested content.

void	printName (std::ostream &os) const override
	Return collection name.

void	printTitle (std::ostream &os) const override
	Return collection title.

void	printValue (std::ostream &os) const override
	Print value of collection, i.e.

Storage_t::const_reverse_iterator	rbegin () const

void	RecursiveRemove (TObject *obj) override
	If one of the TObject we have a referenced to is deleted, remove the reference.

void	releaseOwnership ()

virtual bool	remove (const RooAbsArg &var, bool silent=false, bool matchByNameOnly=false)
	Remove the specified argument from our list.

bool	remove (const RooAbsCollection &list, bool silent=false, bool matchByNameOnly=false)
	Remove each argument in the input list from our list.

template<class forwardIt >
void	remove (forwardIt rangeBegin, forwardIt rangeEnd, bool silent=false, bool matchByNameOnly=false)

virtual void	removeAll ()
	Remove all arguments from our set, deleting them if we own them.

Storage_t::const_reverse_iterator	rend () const

virtual bool	replace (const RooAbsArg &var1, const RooAbsArg &var2)
	Replace var1 with var2 and return true for success.

bool	replace (const RooAbsCollection &other)
	Replace any args in our set with args of the same name from the other set and return true for success.

void	reserve (Storage_t::size_type count)

RooAbsCollection *	selectByAttrib (const char *name, bool value) const
	Create a subset of the current collection, consisting only of those elements with the specified attribute set.

RooAbsCollection *	selectByName (const char *nameList, bool verbose=false) const
	Create a subset of the current collection, consisting only of those elements with names matching the wildcard expressions in nameList, supplied as a comma separated list.

RooAbsCollection *	selectCommon (const RooAbsCollection &refColl) const
	Create a subset of the current collection, consisting only of those elements that are contained as well in the given reference collection.

bool	selectCommon (const RooAbsCollection &refColl, RooAbsCollection &outColl) const
	Create a subset of the current collection, consisting only of those elements that are contained as well in the given reference collection.

void	setAttribAll (const Text_t *name, bool value=true)
	Set given attribute in each element of the collection by calling each elements setAttribute() function.

bool	setCatIndex (const char *name, Int_t newVal=0, bool verbose=false)
	Set index value of a RooAbsCategoryLValue stored in set with given name to newVal.

bool	setCatLabel (const char name, const char newVal="", bool verbose=false)
	Set state name of a RooAbsCategoryLValue stored in set with given name to newVal.

void	setHashTableSize (Int_t number)
	Set the size at which the collection will automatically start using an extra lookup table instead of performing a linear search.

void	setName (const char *name)

bool	setRealValue (const char *name, double newVal=0.0, bool verbose=false)
	Set value of a RooAbsRealLValye stored in set with given name to newVal No error messages are printed unless the verbose flag is set.

bool	setStringValue (const char name, const char newVal="", bool verbose=false)
	Set string value of a RooStringVar stored in set with given name to newVal.

Storage_t::size_type	size () const

RooAbsCollection *	snapshot (bool deepCopy=true) const
	Take a snap shot of current collection contents.

bool	snapshot (RooAbsCollection &output, bool deepCopy=true) const
	Take a snap shot of current collection contents: A collection that owns its elements is returned containing clones of.

void	sort (bool reverse=false)
	Sort collection using std::sort and name comparison.

void	sortTopologically ()
	Sort collection topologically: the servers of any RooAbsArg will be before that RooAbsArg in the collection.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

void	takeOwnership ()

RooFit::UniqueId< RooAbsCollection > const &	uniqueId () const
	Returns a unique ID that is different for every instantiated RooAbsCollection.

void	useHashMapForFind (bool flag) const

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

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

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

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

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

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.

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

virtual void	Clear (Option_t *="")

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

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

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

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

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

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

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: `gROOT->SetSelectedPad(c1)`.

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

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

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

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

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

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

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

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

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

virtual Option_t *	GetOption () const

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

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

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

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

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.

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

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

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

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

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

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

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

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.

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).

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

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

void	operator delete (void *ptr)
	Operator delete.

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

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.

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

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

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

void	ResetBit (UInt_t f)

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

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

void	SetBit (UInt_t f)

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

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

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

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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

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.

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

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

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

Public Member Functions inherited from RooPrintable
	RooPrintable ()

virtual	~RooPrintable ()

virtual StyleOption	defaultPrintStyle (Option_t *opt) const

virtual void	printAddress (std::ostream &os) const
	Print class name of object.

virtual void	printArgs (std::ostream &os) const
	Interface for printing of object arguments.

virtual void	printExtras (std::ostream &os) const
	Interface to print extras of object.

virtual void	printStream (std::ostream &os, Int_t contents, StyleOption style, TString indent="") const
	Print description of object on ostream, printing contents set by contents integer, which is interpreted as an OR of 'enum ContentsOptions' values and in the style given by 'enum StyleOption'.

virtual void	printTree (std::ostream &os, TString indent="") const
	Interface for tree structure printing of object.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static void	cleanup ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from RooAbsCollection
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

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

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

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

Static Public Member Functions inherited from RooPrintable
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static std::ostream &	defaultPrintStream (std::ostream *os=nullptr)
	Return a reference to the current default stream to use in Print().

static void	nameFieldLength (Int_t newLen)
	Set length of field reserved from printing name of RooAbsArgs in multi-line collection printing to given amount.

Protected Member Functions
bool	canBeAdded (const RooAbsArg &arg, bool silent) const override
	Determine whether it's possible to add a given RooAbsArg to the collection or not.

bool	checkForDup (const RooAbsArg &arg, bool silent) const
	Check if element with var's name is already in set.

Protected Member Functions inherited from RooAbsCollection
bool	addServerClonesToList (const RooAbsArg &var)
	Add clones of servers of given argument to end of list.

void	clearStructureTags ()

void	deleteList ()
	Delete contents of the list.

void	makeStructureTag ()

void	makeTypedStructureTag ()

TNamed *	structureTag ()

TNamed *	typedStructureTag ()

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).

void	MakeZombie ()

Private Member Functions
template<class Arg_t >
void	processArg (Arg_t &&arg)

void	processArg (const char *name)

void	processArg (const RooAbsArg &arg)

void	processArg (const RooAbsArg *arg)

void	processArg (const RooAbsCollection &coll)

void	processArg (const RooArgList &list)

void	processArg (double value)

void	processArg (RooAbsArg *var)

void	processArg (RooAbsCollection &&coll)

template<typename... Args_t>
void	processArgs (Args_t &&... args)

Additional Inherited Members
Public Types inherited from RooAbsCollection
using	const_iterator = Storage_t::const_iterator

using	Storage_t = std::vector< RooAbsArg * >

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

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

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Public Types inherited from RooPrintable
enum	ContentsOption { kName =1 , kClassName =2 , kValue =4 , kArgs =8 , kExtras =16 , kAddress =32 , kTitle =64 , kCollectionHeader =128 }

enum	StyleOption { kInline =1 , kSingleLine =2 , kStandard =3 , kVerbose =4 , kTreeStructure =5 }

Protected Types inherited from RooAbsCollection
using	LegacyIterator_t = TIteratorToSTLInterface< Storage_t >

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

Static Protected Member Functions inherited from RooAbsCollection
template<class T >
static void	assert_is_no_temporary (T &&)

Protected Attributes inherited from RooAbsCollection
bool	_allRRV = true
	All contents are RRV.

Storage_t	_list
	Actual object storage.

TString	_name
	Our name.

bool	_ownCont = false
	Flag to identify a list that owns its contents.

TNamed *	_structureTag {nullptr}
	! Structure tag

TNamed *	_typedStructureTag {nullptr}
	! Typed structure tag

Static Protected Attributes inherited from RooPrintable
static Int_t	_nameLength

#include <RooArgSet.h>

Inheritance diagram for RooArgSet:

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Constructor & Destructor Documentation

◆ RooArgSet() [1/13]

RooArgSet::RooArgSet ( )

Default constructor.

Definition at line 153 of file RooArgSet.cxx.

◆ RooArgSet() [2/13]

template<typename... Args_t>

RooArgSet::RooArgSet	(	const RooAbsArg &	arg,
		Args_t &&...	moreArgsOrName
	)

inline

Construct a (non-owning) RooArgSet from one or more RooFit objects.

The set will not own its contents.

Template Parameters

Ts	Parameter pack of objects that derive from RooAbsArg or RooFit collections; or a name.

Parameters

arg	A RooFit object. Note that you can also pass a `double` as first argument when constructing a RooArgSet, and another templated constructor will be used where a RooConstVar is implicitly created from the `double` value.
moreArgsOrName	Arbitrary number of Further RooFit objects that derive from RooAbsArg RooFit collections of such objects `double`s from which a RooConstVar is implicitly created via `RooFit::RooConst`. A name for the set. Given multiple names, the last-given name prevails.

Definition at line 81 of file RooArgSet.h.

◆ RooArgSet() [3/13]

template<typename... Args_t>

RooArgSet::RooArgSet	(	RooAbsArg &&	arg,
		Args_t &&...	moreArgsOrName
	)

inline

This constructor will provoke a static_assert, because passing a RooAbsArg as r-value reference is not allowed.

Definition at line 99 of file RooArgSet.h.

◆ RooArgSet() [4/13]

template<typename... Args_t>

RooArgSet::RooArgSet	(	double	arg,
		Args_t &&...	moreArgsOrName
	)

inlineexplicit

Definition at line 103 of file RooArgSet.h.

◆ RooArgSet() [5/13]

template<typename Iterator_t , typename value_type = typename std::remove_pointer<typename std::iterator_traits<Iterator_t>::value_type>::type, typename = std::enable_if<std::is_convertible<const value_type*, const RooAbsArg*>::value>>

RooArgSet::RooArgSet	(	Iterator_t	beginIt,
		Iterator_t	endIt,
		const char *	name = `""`
	)

inline

Construct a (non-owning) RooArgSet from iterators.

Template Parameters

Iterator_t An iterator pointing to RooFit objects or to pointers/references of those.

Parameters

beginIt	Iterator to first element to add.
endIt	Iterator to end of range to be added.
name	Optional name of the collection.

Definition at line 115 of file RooArgSet.h.

◆ RooArgSet() [6/13]

RooArgSet::RooArgSet ( std::vector< RooAbsArgPtrOrDouble > const & vec )

inline

Construct a non-owning RooArgSet from a vector of RooAbsArg pointers.

This constructor is mainly intended for pyROOT. With cppyy, a Python list or tuple can be implicitly converted to an std::vector, and by enabling implicit construction of a RooArgSet from a std::vector, we indirectly enable implicit conversion from a Python list/tuple to RooArgSets.

Parameters

vec	A vector with pointers to the arguments or doubles for RooFit::RooConst().

Definition at line 128 of file RooArgSet.h.

◆ RooArgSet() [7/13]

RooArgSet::RooArgSet	(	const RooArgSet &	other,
		const char *	name = `""`
	)

Copy constructor.

Note that a copy of a set is always non-owning, even if the source set owns its contents. To create an owning copy of a set (owning or not), use the snapshot() method.

Definition at line 235 of file RooArgSet.cxx.

◆ RooArgSet() [8/13]

RooArgSet::RooArgSet ( RooArgSet && other )

inline

Move constructor.

Definition at line 137 of file RooArgSet.h.

◆ RooArgSet() [9/13]

RooArgSet::RooArgSet	(	const RooArgSet &	set1,
		const RooArgSet &	set2,
		const char *	name = `""`
	)

Construct a set from two existing sets.

The new set will not own its contents.

Definition at line 203 of file RooArgSet.cxx.

◆ RooArgSet() [10/13]

RooArgSet::RooArgSet ( const RooAbsCollection & coll )

Constructor from a RooArgList.

If the list contains multiple objects with the same name, only the first is store in the set. Warning messages will be printed for dropped items.

Definition at line 164 of file RooArgSet.cxx.

◆ RooArgSet() [11/13]

RooArgSet::RooArgSet	(	const RooAbsCollection &	collection,
		const RooAbsArg *	var1
	)

Constructor from a RooArgSet / RooArgList and a pointer to another RooFit object.

Parameters

[in]	collection	Collection of RooFit objects to be added. If a list contains multiple objects with the same name, only the first is stored in the set. Warning messages will be printed for dropped items.
[in]	var1	Further object to be added. If it is already in `collection`, nothing happens, and the warning message is suppressed.

Definition at line 180 of file RooArgSet.cxx.

◆ RooArgSet() [12/13]

RooArgSet::RooArgSet	(	const TCollection &	tcoll,
		const char *	name = `""`
	)

explicit

Constructor from a root TCollection.

Elements in the collection that do not inherit from RooAbsArg will be skipped. A warning message will be printed for every skipped item.

Definition at line 216 of file RooArgSet.cxx.

◆ RooArgSet() [13/13]

RooArgSet::RooArgSet ( const char * name )

explicit

Empty set constructor.

Definition at line 193 of file RooArgSet.cxx.

◆ ~RooArgSet()

RooArgSet::~RooArgSet ( )

override

Destructor.

Definition at line 245 of file RooArgSet.cxx.

Member Function Documentation

◆ canBeAdded()

bool RooArgSet::canBeAdded	(	const RooAbsArg &	arg,
		bool	silent
	)		const

inlineoverrideprotectedvirtual

Determine whether it's possible to add a given RooAbsArg to the collection or not.

Implements RooAbsCollection.

Definition at line 189 of file RooArgSet.h.

◆ checkForDup()

bool RooArgSet::checkForDup	(	const RooAbsArg &	arg,
		bool	silent
	)		const

protected

Check if element with var's name is already in set.

Definition at line 278 of file RooArgSet.cxx.

◆ Class()

static TClass * RooArgSet::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * RooArgSet::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t RooArgSet::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 225 of file RooArgSet.h.

◆ cleanup()

void RooArgSet::cleanup ( )

static

Definition at line 80 of file RooArgSet.cxx.

◆ clone()

TObject * RooArgSet::clone ( const char * newname ) const

inlineoverridevirtual

Implements RooAbsCollection.

Definition at line 148 of file RooArgSet.h.

◆ containsInstance()

bool RooArgSet::containsInstance ( const RooAbsArg & var ) const

inlineoverridevirtual

Check if this exact instance is in this collection.

Reimplemented from RooAbsCollection.

Definition at line 169 of file RooArgSet.h.

◆ create()

TObject * RooArgSet::create ( const char * newname ) const

inlineoverridevirtual

Implements RooAbsCollection.

Definition at line 149 of file RooArgSet.h.

◆ DeclFileName()

static const char * RooArgSet::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 225 of file RooArgSet.h.

◆ IsA()

TClass * RooArgSet::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from RooAbsCollection.

Reimplemented in RooCollectionProxy< RooArgSet >.

Definition at line 225 of file RooArgSet.h.

◆ isInRange()

bool RooArgSet::isInRange ( const char * rangeSpec )

Definition at line 619 of file RooArgSet.cxx.

◆ operator=()

RooArgSet & RooArgSet::operator= ( const RooArgSet & other )

inline

Definition at line 150 of file RooArgSet.h.

◆ operator[]()

RooAbsArg & RooArgSet::operator[] ( const TString & name ) const

Get reference to an element using its name.

Named element must exist in set.

Exceptions

invalid_argument if an element with the given name is not in the set.

Note that since most RooFit objects use an assignment operator that copies values, an expression like

mySet["x"] = y;

y

Double_t y[n]

Definition legend1.C:17

will not replace the element "x", it just assigns the values of y.

Definition at line 263 of file RooArgSet.cxx.

◆ processArg() [1/9]

template<class Arg_t >

void RooArgSet::processArg ( Arg_t && arg )

inlineprivate

Definition at line 205 of file RooArgSet.h.

◆ processArg() [2/9]

void RooArgSet::processArg ( const char * name )

inlineprivate

Definition at line 209 of file RooArgSet.h.

◆ processArg() [3/9]

void RooArgSet::processArg ( const RooAbsArg & arg )

inlineprivate

Definition at line 201 of file RooArgSet.h.

◆ processArg() [4/9]

void RooArgSet::processArg ( const RooAbsArg * arg )

inlineprivate

Definition at line 202 of file RooArgSet.h.

◆ processArg() [5/9]

void RooArgSet::processArg ( const RooAbsCollection & coll )

inlineprivate

Definition at line 211 of file RooArgSet.h.

◆ processArg() [6/9]

void RooArgSet::processArg ( const RooArgList & list )

private

◆ processArg() [7/9]

void RooArgSet::processArg ( double value )

private

Definition at line 648 of file RooArgSet.cxx.

◆ processArg() [8/9]

void RooArgSet::processArg ( RooAbsArg * var )

inlineprivate

Definition at line 203 of file RooArgSet.h.

◆ processArg() [9/9]

void RooArgSet::processArg ( RooAbsCollection && coll )

inlineprivate

Definition at line 214 of file RooArgSet.h.

◆ processArgs()

template<typename... Args_t>

void RooArgSet::processArgs ( Args_t &&... args )

inlineprivate

Definition at line 196 of file RooArgSet.h.

◆ readFromFile()

bool RooArgSet::readFromFile	(	const char *	fileName,
		const char *	flagReadAtt = `nullptr`,
		const char *	section = `nullptr`,
		bool	verbose = `false`
	)

Read contents of the argset from specified file.

See readFromStream() for details

Definition at line 321 of file RooArgSet.cxx.

◆ readFromStream() [1/2]

virtual bool RooArgSet::readFromStream	(	std::istream &	is,
		bool	compact,
		bool	verbose = `false`
	)

inlinevirtual

Shortcut for readFromStream(std::istream&, bool, const char*, const char*, bool), setting flagReadAtt and section to 0.

Definition at line 158 of file RooArgSet.h.

◆ readFromStream() [2/2]

bool RooArgSet::readFromStream	(	std::istream &	is,
		bool	compact,
		const char *	flagReadAtt,
		const char *	section,
		bool	verbose = `false`
	)

Read the contents of the argset in ASCII form from given stream.

The stream is read to end-of-file and each line is assumed to be of the form

Lines starting with argNames not matching any element in the list will be ignored with a warning message. In addition limited C++ style preprocessing and flow control is provided. The following constructions are recognized:

include "include.file"

Include given file, recursive inclusion OK

if (<boolean_expression>)
  <name> = <value>
  ....
else if (<boolean_expression>)
  ....
else
  ....
endif

All expressions are evaluated by RooFormula, and may involve any of the sets variables.

echo <Message>

Print console message while reading from stream

abort

Force termination of read sequence with error status

The value of each argument is read by the arguments readFromStream function.

Definition at line 411 of file RooArgSet.cxx.

◆ snapshot() [1/2]

RooArgSet * RooArgSet::snapshot ( bool deepCopy = true ) const

inline

Use RooAbsCollection::snapshot(), but return as RooArgSet.

Definition at line 178 of file RooArgSet.h.

◆ snapshot() [2/2]

bool RooArgSet::snapshot	(	RooAbsCollection &	output,
		bool	deepCopy = `true`
	)		const

inline

Take a snap shot of current collection contents.

An owning collection is returned containing clones of

Elements in this collection
External dependents of all elements and recursively any dependents of those dependents (if deepCopy flag is set)

This is useful to save the values of variables or parameters. It doesn't require deep copying if the parameters are direct members of the collection.

If deepCopy is specified, the client-server links between the cloned list elements and the cloned external dependents are reconnected to each other, making the snapshot a completely self-contained entity.

Definition at line 183 of file RooArgSet.h.

◆ Streamer()

void RooArgSet::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from RooAbsCollection.

Reimplemented in RooCollectionProxy< RooArgSet >.

◆ StreamerNVirtual()

void RooArgSet::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 225 of file RooArgSet.h.

◆ writeToFile()

void RooArgSet::writeToFile ( const char * fileName ) const

Write contents of the argset to specified file.

See writeToStream() for details

Definition at line 305 of file RooArgSet.cxx.

◆ writeToStream()

void RooArgSet::writeToStream	(	std::ostream &	os,
		bool	compact,
		const char *	section = `nullptr`
	)		const

virtual

Write the contents of the argset in ASCII form to given stream.

A line is written for each element contained in the form <argName> = <argValue>

The <argValue> part of each element is written by the arguments' writeToStream() function.

Parameters

os	The stream to write to.
compact	Write only the bare values, separated by ' '.

Note: In compact mode, the stream cannot be read back into a RooArgSet, but only into a RooArgList, because the variable names are lost.

Parameters

section If non-null, add a section header like [<section>].

Definition at line 347 of file RooArgSet.cxx.

Libraries for RooArgSet:

[legend]

The documentation for this class was generated from the following files:

roofit/roofitcore/inc/RooArgSet.h
roofit/roofitcore/src/RooArgSet.cxx

Ownership of contents

Uniquely identifying RooArgSet objects

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ RooArgSet() [1/13]

◆ RooArgSet() [2/13]

◆ RooArgSet() [3/13]

◆ RooArgSet() [4/13]

◆ RooArgSet() [5/13]

◆ RooArgSet() [6/13]

◆ RooArgSet() [7/13]

◆ RooArgSet() [8/13]

◆ RooArgSet() [9/13]

◆ RooArgSet() [10/13]

◆ RooArgSet() [11/13]

◆ RooArgSet() [12/13]

◆ RooArgSet() [13/13]

◆ ~RooArgSet()

Member Function Documentation

◆ canBeAdded()

◆ checkForDup()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ cleanup()

◆ clone()

◆ containsInstance()

◆ create()

◆ DeclFileName()

◆ IsA()

◆ isInRange()

◆ operator=()

◆ operator[]()

◆ processArg() [1/9]

◆ processArg() [2/9]

◆ processArg() [3/9]

◆ processArg() [4/9]

◆ processArg() [5/9]

◆ processArg() [6/9]

◆ processArg() [7/9]

◆ processArg() [8/9]

◆ processArg() [9/9]

◆ processArgs()

◆ readFromFile()

◆ readFromStream() [1/2]

◆ readFromStream() [2/2]

◆ snapshot() [1/2]

◆ snapshot() [2/2]

◆ Streamer()

◆ StreamerNVirtual()

◆ writeToFile()

◆ writeToStream()