The following code example is taken from the book
C++ Templates - The Complete Guide
by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002
© Copyright David Vandevoorde and Nicolai M. Josuttis 2002
#include <cstring>
#include <cassert>
#include <stddef.h>
#include "csm1.hpp"
// partial specialization for fast bitwise copying of objects
template <typename T>
class BitOrClassCSM<T,true> : public BitOrClassCSM<T,false> {
public:
static void copy_n (T const* src, T* dst, size_t n) {
// copy n items onto n other ones
std::memcpy((void*)dst, (void*)src, n*sizeof(T));
}
static void copy_init_n (T const* src, void* dst, size_t n) {
// copy n items onto uninitialized storage
std::memcpy(dst, (void*)src, n*sizeof(T));
}
static void move_n (T* src, T* dst, size_t n) {
// move n items onto n other ones
assert(src != dst);
std::memcpy((void*)dst, (void*)src, n*sizeof(T));
}
static void move_init_n (T const* src, void* dst, size_t n) {
// move n items onto uninitialized storage
assert(src != dst);
std::memcpy(dst, (void*)src, n*sizeof(T));
}
};