This map can be used if you have to provide a map only for its type definitions, or if you have to provide a writable map, but data written to it is not required (i.e. it will be sent to /dev/null). It conforms to the ReadWriteMap concept.
#include <lemon/maps.h>
 Inheritance diagram for NullMap< K, V >:
 Inheritance diagram for NullMap< K, V >:| Public Types | |
| typedef K | Key | 
|  | |
| typedef V | Value | 
|  | |
|  Public Types inherited from MapBase< K, V > | |
| typedef K | Key | 
| The key type of the map. | |
| typedef V | Value | 
| The value type of the map. (The type of objects associated with the keys). | |
| Public Member Functions | |
| Value | operator[] (const Key &) const | 
| Gives back a default constructed element. | |
| void | set (const Key &, const Value &) | 
| Absorbs the value. | |
| Related Functions | |
| (Note that these are not member functions.) | |
| template<typename K , typename V > | |
| NullMap< K, V > | nullMap () | 
| Returns a NullMapclass.  More... | |
 1.8.5
 1.8.5