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Action:
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Returns a list of all the kinds on a vertex or edge.
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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:kinds? in-graph item1 [item2])
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Arg Types:
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in-graph
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graph
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item1
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string | entity
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item2
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entity
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Returns:
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boolean
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Description:
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Given a graph and a vertex or edge, returns a list containing all kinds on that vertex or edge. A graph can have any number of
kind types assigned to edges of the graph.
kind is an integer for the type and can take a Boolean value. If not specified, it is assumed to be
#f. The assignment of
kind and its value is done on a per edge basis.
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in-graph specifies a graph.
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item1 could be either a string or an entity. When it is a string, it is tested to see whether it represents the name of an edge in the graph or a vertex in the graph.
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item2 is only used when
item1 is an entity representing a vertex, in which case
item2 must also be an entity representing a vertex.
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Example:
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; graph:kinds?
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; Create some simple graphs.
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(define g (graph "a-b b-c c-d c-e"))
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;; g
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(graph:set-kind g 3 #t "a-b")
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;; #[graph "a-b b-c c-d c-e"]
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(graph:set-kind g 3 #t "b-c")
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;; #[graph "a-b b-c c-d c-e"]
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(graph:kinds? g "a-b")
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;; (#f #f #f #t)
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(graph:kinds? g "b-c")
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;; (#f #f #f #t)
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(graph:kinds? g "c-d")
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;; ()
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