lib/yargi/vertex_set.rb in yargi-0.1.2 vs lib/yargi/vertex_set.rb in yargi-0.2.0

@@ -1,32 +1,32 @@
 module Yargi
-  
+
   # A set of vertices
   class VertexSet < ElementSet
-    
+
     ### Factory section #######################################################
-    
+
     # Creates a VertexSet instance using _elements_ varargs.
     def self.[](*elements)
       VertexSet.new(elements)
     end
-    
-    
+
+
     ### Walking section #######################################################
-    
+
     # Returns incoming edges of all vertices of this set
     def in_edges(filter=nil, &block)
       r = self.collect {|v| v.in_edges(filter, &block) }
       EdgeSet.new(r).flatten.uniq
     end
-    
+
     # Returns all back-adjacent vertices reachable from this set
     def in_adjacent(filter=nil, &block)
       r = self.collect {|v| v.in_adjacent(filter, &block) }
       VertexSet.new(r).flatten.uniq
     end
-    
+
     # Returns all outgoing edges of all vertices of this set
     def out_edges(filter=nil, &block)
       r = self.collect {|v| v.out_edges(filter, &block) }
       EdgeSet.new(r).flatten.uniq
     end
@@ -34,19 +34,19 @@
     # Returns all forward-adjacent vertices reachable from this set
     def out_adjacent(filter=nil, &block)
       r = self.collect {|v| v.out_adjacent(filter, &block) }
       VertexSet.new(r).flatten.uniq
     end
-    
+
     # Returns all adjacent vertices reachable from this set
     def adjacent(filter=nil, &block)
       (in_adjacent(filter, &block)+out_adjacent(filter, &block)).uniq
     end
-    
-    
+
+
     ### Protected section #####################################################
     protected
-        
+
     # Extends with VertexSet instead of ElementSet
     def extend_result(result)
       VertexSet.new(result)
     end
 
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