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Sprout/source/libs/string/char_traits/copy.rst
Bolero-MURAKAMI 88ee58bcf4 fix Issue #49
2013-09-13 17:22:10 +09:00

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.. _sprout-string-char_traits-copy:
###############################################################################
copy
###############################################################################
Interface
========================================
.. sourcecode:: c++
static char_type* copy(char_type* s1, char_type const* s2, std::size_t n);
Pre-condition
========================================
| s2 not in [s1,s1+n).
Effects
========================================
| Equivalent to ``std::char_traits<Char>::copy(s1, s2, n)``.
Examples
========================================
.. sourcecode:: c++
#include <sprout/string.hpp>
#include <sprout/assert.hpp>
using namespace sprout;
char x[] = "homuhomu";
SPROUT_STATIC_CONSTEXPR char const* y = "madocchi";
int main() {
char_traits<char>::copy(x, y, 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``