std::uninitialized_copy
From cppreference.com
| Defined in header <memory>
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| template< class InputIt, class ForwardIt >
ForwardIt uninitialized_copy( InputIt first, InputIt last, ForwardIt d_first ); |
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Copies elements from the range [first, last) to an uninitialized memory area beginning at d_first. The elements in the uninitialized area are constructed using copy constructor.
Contents |
[edit] Parameters
| first, last | - | the range of the elements to copy |
| d_first | - | the beginning of the destination range |
| Type requirements | ||
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InputIt must meet the requirements of InputIterator.
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ForwardIt must meet the requirements of ForwardIterator.
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[edit] Return value
Iterator to the element past the last element copied.
[edit] Complexity
Linear in the distance between first and last
[edit] Possible implementation
template<class InputIt, class ForwardIt> ForwardIt uninitialized_copy(InputIt first, InputIt last, ForwardIt d_first) { typedef typename std::iterator_traits<ForwardIt>::value_type Value; for (; first != last; ++first, ++d_first) { ::new (static_cast<void*>(&*d_first)) Value(*first); } return d_first; } |
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| (C++11)
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copies a number of objects to an uninitialized area of memory (function template) |