SimplePath< GR > Class Template Reference

Detailed Description

template<typename GR>
class lemon::SimplePath< GR >

A structure for representing directed path in a digraph.

Template Parameters

GR	The digraph type in which the path is.

In a sense, the path can be treated as a list of arcs. The LEMON path type stores just this list. As a consequence it cannot enumerate the nodes in the path and the zero length paths cannot store the source.

This implementation is a just back insertable and erasable path type. It can be indexed in O(1) time. The back insertion and erasure is amortized O(1) time. This implementation is faster then the Path type because it use just one vector for the arcs.

#include <lemon/path.h>

Classes
class	ArcIt
	Iterator class to iterate on the arcs of the paths. More...

Public Member Functions
	SimplePath ()
	Default constructor.
	SimplePath (const SimplePath &cpath)
	Copy constructor.
template<typename CPath >
	SimplePath (const CPath &cpath)
	Template copy constructor.
SimplePath &	operator= (const SimplePath &cpath)
	Copy assignment.
template<typename CPath >
SimplePath &	operator= (const CPath &cpath)
	Template copy assignment.
int	length () const
	Length of the path.
bool	empty () const
	Return true if the path is empty.
void	clear ()
	Reset the path to an empty one.
const Arc &	nth (int n) const
	The n-th arc.
ArcIt	nthIt (int n) const
	Initializes arc iterator to point to the n-th arc.
const Arc &	front () const
	The first arc of the path.
const Arc &	back () const
	The last arc of the path.
void	addBack (const Arc &arc)
	Add a new arc behind the current path.
void	eraseBack ()
	Erase the last arc of the path.

Constructor & Destructor Documentation

SimplePath ( )

inline

Default constructor

SimplePath ( const CPath &  cpath )

inline

This path can be initialized with any other path type. It just makes a copy of the given path.

Member Function Documentation

SimplePath& operator= ( const CPath &  cpath )

inline

This path can be initialized with any other path type. It just makes a copy of the given path.

const Arc& nth ( int  n ) const

inline

Precondition

n is in the [0..length() - 1] range.