Used for other orders as the one defined by Comparable. More...

#include <object.hh>

Public Member Functions
virtual int	compare (Object o1, Object o2)=0
	Compare two objects o1 and o2.

Public Member Functions inherited from lout::object::Object
virtual	~Object ()
	The destructor is defined as virtual (but not abstract), so that destruction of Object's works properly.

virtual bool	equals (Object *other)
	Returns, whether two objects are equal.

virtual int	hashValue ()
	Return a hash value for the object.

virtual Object *	clone ()
	Return an exact copy of the object.

virtual void	intoStringBuffer (misc::StringBuffer *sb)
	Store a textual representation of the object in a misc::StringBuffer.

const char *	toString ()
	Use object::Object::intoStringBuffer to return a textual representation of the object.

virtual size_t	sizeOf ()
	Return the number of bytes, this object totally uses.

Static Public Member Functions
static int	compareFun (const void p1, const void p2)
	This static method may be used as compare function for qsort(3) and bsearch(3), for an array of Object* (Object[] or Object*).

Static Public Attributes
static Comparator *	compareFunComparator = NULL

Detailed Description

Used for other orders as the one defined by Comparable.

Compared objects must not neccessary be instances of Comparable.

Definition at line 66 of file object.hh.

Member Function Documentation

◆ compare()

virtual int lout::object::Comparator::compare	(	Object *	o1,
		Object *	o2
	)

pure virtual

Compare two objects o1 and o2.

Return a value < 0, when o1 is less than o2, a value > 0, when o1 is greater than o2, or 0, when o1 and o2 are equal.

If o1.equals(o2) (as defined in Object), compare(o1, o2) must be 0, but, unlike you may expect, the reversed is not necessarily true. This method returns 0, if, according to the rules for sorting, there is no difference, but there may still be differences (not relevant for sorting), which "equals" will care about.

Implemented in dw::oof::OOFFloatsMgr::Float::ComparePosition, dw::oof::OOFFloatsMgr::Float::CompareSideSpanningIndex, dw::oof::OOFFloatsMgr::Float::CompareGBAndExtIndex, dw::oof::OOFFloatsMgr::TBInfo::ComparePosition, and lout::object::StandardComparator.

Referenced by lout::container::untyped::Vector::bsearch(), and compareFun().