SubMap< M1, M2 > Class Template Reference

Detailed Description

template<typename M1, typename M2>
class lemon::SubMap< M1, M2 >

This read-only map returns the difference of the values of the two given maps. Its Key and Value types are inherited from M1. The Key and Value of M2 must be convertible to those of M1.

If m1 is of type M1 and m2 is of M2, then for

*    SubMap<M1,M2> sm(m1,m2);
*  

sm[x] will be equal to m1[x]-m2[x].

The simplest way of using this map is through the subMap() function.

See Also

AddMap, MulMap, DivMap

#include <lemon/maps.h>

Inheritance diagram for SubMap< M1, M2 >:

Public Types
typedef M1::Key	Key
typedef M1::Value	Value
Public Types inherited from MapBase< M1::Key, M1::Value >
typedef M1::Key	Key
	The key type of the map.
typedef M1::Value	Value
	The value type of the map. (The type of objects associated with the keys).

Public Member Functions
	SubMap (const M1 &m1, const M2 &m2)
	Constructor.
Value	operator[] (const Key &k) const

Related Functions
(Note that these are not member functions.)
template<typename M1 , typename M2 >
SubMap< M1, M2 >	subMap (const M1 &m1, const M2 &m2)
	Returns a SubMap class. More...