serial.cpp
#include "../template/includes.cpp"
class Serial {
static int count;
int num;
public:
Serial() : num(count) {
assert(count >= 0);
++count;
}
Serial(const Serial &) = delete;
Serial(Serial &&other) { num = other.num; }
static void reset() { count = 0; }
static int size() { return count; }
operator int() const { return num; }
};
int Serial::count = -1;