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Sprout/source/libs/string/char_traits/copy-iterator.rst
2013-11-04 14:31:03 +09:00

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.. _sprout-string-char_traits-copy-iterator:
###############################################################################
copy
###############################################################################
Interface
========================================
.. sourcecode:: c++
template<typename OutputIterator, typename ConstInputIterator>
static SPROUT_CXX14_CONSTEXPR OutputIterator copy(OutputIterator s1, ConstInputIterator s2, std::size_t n);
Pre-condition
========================================
| s2 not in [s1,s1+n).
Effects
========================================
| For each i in [0,n) performs ``assign(s1[i], s2[i])``.
Examples
========================================
.. sourcecode:: c++
#include <sprout/string.hpp>
#include <sprout/assert.hpp>
using namespace sprout;
auto x = string<8>("homuhomu");;
SPROUT_STATIC_CONSTEXPR auto y = string<8>("madocchi");
int main() {
char_traits<char>::copy(x.begin(), y.begin(), 8);
SPROUT_ASSERT_MSG(x[0] == y[0], "y is copied to x.");
}
Complexity
========================================
| linear.
Header
========================================
| ``sprout/string/char_traits.hpp``
| Convenience header: ``sprout/string.hpp``