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Expression Semantics

Semantics of an expression is defined only where it is not defined in Forward Iterator.

Name Expression Precondition Semantics Postcondition
Predecrement --i i is dereferenceable or past-the-end. There exists a dereferenceable iterator j such that i == ++j. i is modified to point to the previous element. i is dereferenceable. &i = &--i . If i == j , then --i == --j . If j is dereferenceable and i == ++j , then --i == j.
Postdecrement i-- i is dereferenceable or past-the-end. There exists a dereferenceable iterator j such that i == ++j. Equivalent to { X tmp = i; --i; return tmp; }


Valid expressions | Standard Template Library Programmer`s Guide | Complexity guarantees







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