long timeStamp;

TimeStamped() { timeStamp = time(0); }

long getStamp() { return timeStamp; }

long serialNumber;

static long counter;

SerialNumbered() { serialNumber = counter++; }

long getSerialNumber() { return serialNumber; }

string value;

void set(string val) { value = val; }

string get() { return value; }

TimeStamped<SerialNumbered<Basic> > mixin1, mixin2;

mixin1.set("test string 1");

mixin2.set("test string 2");

cout << mixin1.get() << " " << mixin1.getStamp() <<

" " << mixin1.getSerialNumber() << endl;

cout << mixin2.get() << " " << mixin2.getStamp() <<

" " << mixin2.getSerialNumber() << endl;