remove-vertex ( vertex edges graph -- )
Factor handbook » The language » Collections » Directed graph utilities

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Vocabulary
graphs

Inputs

vertex	an object
edges	a sequence
graph	an assoc mapping vertices to sets of edges

Outputs
None

Word description
Removes a vertex from a graph, using the given edges sequence.

Notes
The edges sequence must have all the values passed to add-vertex, otherwise some vertices of the graph may continue to refer to the removed vertex.

Side effects
Modifies graph

Definition

USING: assocs kernel sequences sets ;

IN: graphs

: remove-vertex ( vertex edges graph -- )
    [ at delete ] curry with each ; inline