class RGL::BellmanFordVisitor
Bellman-Ford shortest paths algorithm has the following event points:
* examine_edge * edge_relaxed * edge_not_relaxed * edge_minimized * edge_not_minimized
Public Class Methods
new(graph)
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Calls superclass method
# File lib/rgl/bellman_ford.rb, line 21 def initialize(graph) super(graph) # by default, through an exception if a negative-weight cycle is detected @edge_not_minimized_event_handler = lambda do |u, v| raise ArgumentError.new("there is a negative-weight cycle including edge (#{u}, #{v})") end end