NullMap< K, V > Class Template Reference

Detailed Description

template<typename K, typename V>
class lemon::NullMap< K, V >

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 the ReadWriteMap concept.

See Also

ConstMap

#include <lemon/maps.h>

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 NullMap class.