This is the base type of each node iterator, thus each kind of node iterator converts to this. More precisely each kind of node iterator should be inherited from the trivial node iterator.
#include <lemon/concepts/graph.h>
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Node () | |
Default constructor. | |
Node (const Node &) | |
Node (Invalid) | |
Invalid constructor & conversion. | |
bool | operator== (Node) const |
Equality operator. | |
bool | operator!= (Node) const |
Inequality operator. | |
bool | operator< (Node) const |
Artificial ordering operator. | |
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This constructor initializes the iterator to be invalid.
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Two iterators are equal if and only if they point to the same object or both are invalid.
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To allow the use of graph descriptors as key type in std::map or similar associative container we require this.