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. More... | |
 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. More... | |
| virtual bool | equals (Object *other) |
| Returns, whether two objects are equal. More... | |
| virtual int | hashValue () |
| Return a hash value for the object. More... | |
| virtual Object * | clone () |
| Return an exact copy of the object. More... | |
| virtual void | intoStringBuffer (misc::StringBuffer *sb) |
| Store a textual representation of the object in a misc::StringBuffer. More... | |
| const char * | toString () |
| Use object::Object::intoStringBuffer to return a textual representation of the object. More... | |
| virtual size_t | sizeOf () |
| Return the number of bytes, this object totally uses. More... | |
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**). More... | |
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.
Member Function Documentation
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 lout::object::StandardComparator.
Referenced by lout::container::untyped::Vector::bsearch(), and compareFun().
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static |
This static method may be used as compare function for qsort(3) and bsearch(3), for an array of Object* (Object*[] or Object**).
"compareFunComparator" should be set before.
- Todo:
- Not reentrant. Consider switching to reentrant variants (qsort_r), and compare function with an additional argument.
References compare(), and compareFunComparator.
Referenced by lout::container::untyped::Vector::sort().
Member Data Documentation
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static |
Referenced by compareFun(), and lout::container::untyped::Vector::sort().
The documentation for this class was generated from the following files:
