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[alg.none.of]
# 26 Algorithms library [[algorithms]](./#algorithms)
## 26.6 Non-modifying sequence operations [[alg.nonmodifying]](alg.nonmodifying#alg.none.of)
### 26.6.3 None of [alg.none.of]
[🔗](#lib:none_of)
`template<class InputIterator, class Predicate>
constexpr bool none_of(InputIterator first, InputIterator last, Predicate pred);
template<class ExecutionPolicy, class ForwardIterator, class Predicate>
bool none_of(ExecutionPolicy&& exec, ForwardIterator first, ForwardIterator last,
Predicate pred);
template<[input_iterator](iterator.concept.input#concept:input_iterator "24.3.4.9Concept input_­iterator[iterator.concept.input]") I, [sentinel_for](iterator.concept.sentinel#concept:sentinel_for "24.3.4.7Concept sentinel_­for[iterator.concept.sentinel]")<I> S, class Proj = identity,
[indirect_unary_predicate](indirectcallable.indirectinvocable#concept:indirect_unary_predicate "24.3.6.3Indirect callables[indirectcallable.indirectinvocable]")<projected<I, Proj>> Pred>
constexpr bool ranges::none_of(I first, S last, Pred pred, Proj proj = {});
template<[input_range](range.refinements#concept:input_range "25.4.6Other range refinements[range.refinements]") R, class Proj = identity,
[indirect_unary_predicate](indirectcallable.indirectinvocable#concept:indirect_unary_predicate "24.3.6.3Indirect callables[indirectcallable.indirectinvocable]")<projected<iterator_t<R>, Proj>> Pred>
constexpr bool ranges::none_of(R&& r, Pred pred, Proj proj = {});
template<[execution-policy](algorithms.parallel.defns#concept:execution-policy "26.3.1Preamble[algorithms.parallel.defns]") Ep, [random_access_iterator](iterator.concept.random.access#concept:random_access_iterator "24.3.4.13Concept random_­access_­iterator[iterator.concept.random.access]") I, [sized_sentinel_for](iterator.concept.sizedsentinel#concept:sized_sentinel_for "24.3.4.8Concept sized_­sentinel_­for[iterator.concept.sizedsentinel]")<I> S,
class Proj = identity, [indirect_unary_predicate](indirectcallable.indirectinvocable#concept:indirect_unary_predicate "24.3.6.3Indirect callables[indirectcallable.indirectinvocable]")<projected<I, Proj>> Pred>
bool ranges::none_of(Ep&& exec, I first, S last, Pred pred, Proj proj = {});
template<[execution-policy](algorithms.parallel.defns#concept:execution-policy "26.3.1Preamble[algorithms.parallel.defns]") Ep, [sized-random-access-range](range.refinements#concept:sized-random-access-range "25.4.6Other range refinements[range.refinements]") R, class Proj = identity,
[indirect_unary_predicate](indirectcallable.indirectinvocable#concept:indirect_unary_predicate "24.3.6.3Indirect callables[indirectcallable.indirectinvocable]")<projected<iterator_t<R>, Proj>> Pred>
bool ranges::none_of(Ep&& exec, R&& r, Pred pred, Proj proj = {});
`
[1](#1)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/algorithms.tex#L4502)
Let E be:
- [(1.1)](#1.1)
pred(*i) for the overloads in namespace std;
- [(1.2)](#1.2)
invoke(pred, invoke(proj, *i)) for the overloads in namespace ranges[.](#1.sentence-1)
[2](#2)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/algorithms.tex#L4512)
*Returns*: false if E is true for some iterator i in the range [first, last), andtrue otherwise[.](#2.sentence-1)
[3](#3)
[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/algorithms.tex#L4518)
*Complexity*: At most last - first applications of the predicate and any projection[.](#3.sentence-1)