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Incrementable Iterator Concept

A class or built-in type X models the Incrementable Iterator concept if, in addition to X being Assignable and Copy Constructible, the following expressions are valid and respect the stated semantics.

Incrementable Iterator Requirements (in addition to Assignable, Copy Constructible)
Expression Return Type Assertion/Semantics
++r X& &r == &++r
r++ X
   X tmp = r;
   return tmp;
iterator_traversal<X>::type Convertible to incrementable_traversal_tag