Digraph::Arc Class Reference

Detailed Description

This class identifies an arc of the digraph. It also serves as a base class of the arc iterators, thus they will convert to this type.

#include <lemon/concepts/digraph.h>

Inheritance diagram for Digraph::Arc:

Public Member Functions
	Arc ()
	Default constructor.
	Arc (const Arc &)
	Arc (Invalid)
bool	operator== (Arc) const
	Equality operator.
bool	operator!= (Arc) const
	Inequality operator.
bool	operator< (Arc) const
	Artificial ordering operator.

Constructor & Destructor Documentation

Arc ( )

inline

Warning

The default constructor sets the iterator to an undefined value.

Arc ( const Arc &  )

inline

Copy constructor.

Arc ( Invalid  )

inline

Initialize the iterator to be invalid.

Member Function Documentation

bool operator== ( Arc  ) const

inline

Two iterators are equal if and only if they point to the same object or both are invalid.

bool operator!= ( Arc  ) const

inline

See Also

operator==(Arc n)

bool operator< ( Arc  ) const

inline

To allow the use of digraph descriptors as key type in std::map or similar associative container we require this.

Note

This operator only have to define some strict ordering of the items; this order has nothing to do with the iteration ordering of the items.