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...y be reasonable to implement a graph traversal algorithm in the form of an iterator, which returns the processed nodes and/or the traversed arcs step-by-step.

** [[Iterator]]

...utgoing arc <math>a_v=(v,w)</math> of <math>v</math>. (May be viewed as an iterator over the list of all outgoing arcs.) ...ursive procedure. However, this excludes the option to implement DFS as an iterator, which means to turn the loop inside-out (cf. remarks on [[Graph traversal|

...fact, then the modification may be simply added to the loop that runs the iterator.

...tminus\{t\}</math> has a '''current arc''', which may be implemented as an iterator on the list of outgoing arcs of <math>v</math>.

...tminus\{t\}</math> has a '''current arc''', which may be implemented as an iterator on the list of outgoing residual arcs of <math>v</math>.

...ly, a loop may be implemented as an [http://en.wikipedia.org/wiki/Iterator iterator] whose method for going one step forward implements the execution of one it