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logical_not<T>

logical_not<T> DescriptionLogical_not<T> is a function object; specifically, it is an Adaptable Predicate, which means it is a function object that tests the truth or falsehood of some condition. If f is an object of class logical_not<T> and x is an object of class T (where T is convertible to bool) then f(x) returns true if and only if x is false. Example Transforms a vector of bool into its logical complement. 
vector<bool> V;
...
transform(V.begin(), V.end(), V.begin(), logical_not<bool>());
Definition Defined in the standard header functional, and in the nonstandard backward-compatibility header function.h. Template parameters Parameter Description Default T The type of logical_not's argument   Model ofAdaptable Predicate, DefaultConstructible Type requirementsT must be convertible to bool. Public base classesunary_function<T, bool> Members Notes See also The function object overview, logical_or, logical_and. STL Main Page

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