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Action:
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Determines whether or not the specified vertex is a cutting vertex.
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Filename:
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kern/kern_scm/graph_scm.cxx
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Syntax:
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(graph:cut-vertex? in-graph test-vertex)
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Arg Types:
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in-graph
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graph
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test-vertex
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string | entity |
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Returns:
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boolean
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Description:
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A cutting vertex is vertex whose removal creates more components in the graph than are present when the vertex is not removed.
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in-graph specifies a graph.
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test-vertex could be either the designation string in the graph or an entity associated with that graph vertex.
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Example:
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; graph:cut-vertex?
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; Create a simple example
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(define g1 (graph "me-you us-them
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we-they them-they
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FIDO-SPOT SPOT-KING SPOT-PETEY"))
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;; g1
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; CAREFUL: The order of the graph output may
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; not be the same each time.
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(define g2 (graph:cut-vertices g1))
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;; g2
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(graph:cut-vertex? g1 "us")
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;; #f
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(graph:cut-vertex? g1 "SPOT")
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;; #t
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