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## CGAL::Arity_tag<int>

### Definition

The class Arity_tag<int> is used to define the arity of a functor, i.e., the number of arguments it takes. It is used as a compile time tag only, that is objects of this type are never created anywhere.

#include <CGAL/functional_base.h>

### See Also

AdaptableFunctor

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The CGAL Project . Tue, December 21, 2004 .