RangeMap< V > Class Template Reference

Detailed Description

template<typename V>
class lemon::RangeMap< V >

This map is essentially a wrapper for std::vector. It assigns values to integer keys from the range [0..size-1]. It can be used together with some data structures, e.g. heap types and UnionFind, when the used items are small integers. This map conforms to the ReferenceMap concept.

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

#include <lemon/maps.h>

Inheritance diagram for RangeMap< V >:

Public Types
typedef int	Key
	Key type.
typedef V	Value
	Value type.
typedef Vector::reference	Reference
	Reference type.
typedef Vector::const_reference	ConstReference
	Const reference type.
Public Types inherited from MapBase< int, V >
typedef int	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
	RangeMap (int size=0, const Value &value=Value())
	Constructor with specified default value.
template<typename V1 >
	RangeMap (const std::vector< V1 > &vector)
	Constructs the map from an appropriate std::vector.
template<typename V1 >
	RangeMap (const RangeMap< V1 > &c)
	Constructs the map from another RangeMap.
int	size ()
	Returns the size of the map.
void	resize (int size, const Value &value=Value())
	Resizes the map.
Reference	operator[] (const Key &k)
ConstReference	operator[] (const Key &k) const
void	set (const Key &k, const Value &v)

Related Functions
(Note that these are not member functions.)
template<typename V >
RangeMap< V >	rangeMap (int size=0, const V &value=V())
	Returns a RangeMap class.
template<typename V >
RangeMap< V >	rangeMap (const std::vector< V > &vector)
	Returns a RangeMap class created from an appropriate std::vector.

Member Function Documentation

void resize ( int  size, const Value &  value = Value()  )

inline

Resizes the underlying std::vector container, so changes the keyset of the map.

Parameters

size	The new size of the map. The new keyset will be the range [0..size-1].
value	The default value to assign to the new keys.