cppdraft_translate/cppdraft/uninitialized/construct/default.md

[uninitialized.construct.default]

26 Algorithms library [algorithms]

26.11 Specialized algorithms [specialized.algorithms]

26.11.3 uninitialized_default_construct [uninitialized.construct.default]

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template<class NoThrowForwardIterator> constexpr void uninitialized_default_construct(NoThrowForwardIterator first, NoThrowForwardIterator last);

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Effects: Equivalent to:for (; first != last; ++first)::new (voidify(*first))typename iterator_traits::value_type;

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namespace ranges { template<[nothrow-forward-iterator](special.mem.concepts#concept:nothrow-forward-iterator "26.11.2 Special memory concepts [special.mem.concepts]") I, [nothrow-sentinel-for](special.mem.concepts#concept:nothrow-sentinel-for "26.11.2 Special memory concepts [special.mem.concepts]")<I> S> requires [default_initializable](concept.default.init#concept:default_initializable "18.4.12 Concept default_­initializable [concept.default.init]")<iter_value_t<I>> constexpr I uninitialized_default_construct(I first, S last); template<[nothrow-forward-range](special.mem.concepts#concept:nothrow-forward-range "26.11.2 Special memory concepts [special.mem.concepts]") R> requires [default_initializable](concept.default.init#concept:default_initializable "18.4.12 Concept default_­initializable [concept.default.init]")<range_value_t<R>> constexpr borrowed_iterator_t<R> uninitialized_default_construct(R&& r); }

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Effects: Equivalent to:for (; first != last; ++first)::new (voidify(*first)) remove_reference_t<iter_reference_t>;return first;

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template<class NoThrowForwardIterator, class Size> constexpr NoThrowForwardIterator uninitialized_default_construct_n(NoThrowForwardIterator first, Size n);

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Effects: Equivalent to:for (; n > 0; (void)++first, --n)::new (voidify(*first))typename iterator_traits::value_type;return first;

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namespace ranges { template<[nothrow-forward-iterator](special.mem.concepts#concept:nothrow-forward-iterator "26.11.2 Special memory concepts [special.mem.concepts]") I> requires [default_initializable](concept.default.init#concept:default_initializable "18.4.12 Concept default_­initializable [concept.default.init]")<iter_value_t<I>> constexpr I uninitialized_default_construct_n(I first, iter_difference_t<I> n); }

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Effects: Equivalent to:return uninitialized_default_construct(counted_iterator(first, n), default_sentinel).base();