23 Algorithms library [algorithms]

23.5 Non-modifying sequence operations [alg.nonmodifying]

23.5.1 All of [alg.all_of]

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template<class InputIterator, class Predicate> constexpr bool all_of(InputIterator first, InputIterator last, Predicate pred); template<class ExecutionPolicy, class ForwardIterator, class Predicate> bool all_of(ExecutionPolicy&& exec, ForwardIterator first, ForwardIterator last, Predicate pred);
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Returns: true if [first, last) is empty or if pred(*i) is true for every iterator i in the range [first, last), and false otherwise.
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Complexity: At most last - first applications of the predicate.