def __init__(self):
"""
Initialize a graph.
"""
common.__init__(self)
labeling.__init__(self)
self.node_neighbors = {} # Pairing: Node -> Neighbors
def __init__(self):
"""
Initialize a graph.
"""
common.__init__(self)
labeling.__init__(self)
self.node_neighbors = {} # Pairing: Node -> Neighbors
def __init__(self):
"""
Initialize a digraph.
"""
common.__init__(self)
labeling.__init__(self)
self.node_neighbors = {} # Pairing: Node -> Neighbors
self.node_incidence = {} # Pairing: Node -> Incident nodes
def __init__(self):
"""
Initialize a hypergraph.
"""
common.__init__(self)
labeling.__init__(self)
self.node_links = {} # Pairing: Node -> Hyperedge
self.edge_links = {} # Pairing: Hyperedge -> Node
self.graph = graph() # Ordinary graph
def __init__(self):
"""
Initialize a hypergraph.
"""
common.__init__(self)
labeling.__init__(self)
self.node_links = {} # Pairing: Node -> Hyperedge
self.edge_links = {} # Pairing: Hyperedge -> Node
self.graph = graph() # Ordinary graph