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template<class SinglePassRange, class Size, class OutputIterator> OutputIterator copy_n(const SinglePassRange& rng, Size n, OutputIterator out);
copy_n
is provided to
completely replicate the standard algorithm header, it is preferable
to use Range Adaptors and the extension functions to achieve the same
result with greater safety.
copy_n
copies elements
from [boost::begin(rng), boost::begin(rng) + n)
to the range [out, out + n)
Defined in the header file boost/range/algorithm_ext/copy_n.hpp
SinglePassRange
is
a model of the Single
Pass Range Concept.
Size
is a model of
the Integer
Concept.
OutputIterator
is a
model of the OutputIteratorConcept
.
Linear. Exactly n
elements
are copied.