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#include <fstream>
#include <cstring>
class Reference
{
std::ostream &d_out;
public:
Reference(std::ostream &out)
:
d_out(out)
{}
void swap(Reference &other)
{
char buffer[sizeof(Reference)];
memcpy(buffer, this, sizeof(Reference));
memcpy(this, &other, sizeof(Reference));
memcpy(&other, buffer, sizeof(Reference));
}
std::ostream &out()
{
return d_out;
}
};
int main()
{
std::ofstream one("one");
std::ofstream two("two");
Reference ref1(one); // ref1/ref2 hold references to
Reference ref2(two); // the streams
ref1.out() << "hello to 1\n"; // generate some output
ref2.out() << "hello to 2\n";
ref1.swap(ref2);
ref2.out() << "hello to 1\n"; // more output
ref1.out() << "hello to 2\n";
}
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