C++ 11 Timer class

Timer2.hpp

#include <chrono>
#include <thread>

template <typename T = std::chrono::milliseconds>
class Timer {
    typedef std::chrono::high_resolution_clock clock;
public:
    Timer() : start(clock::now()) {}

    inline void reset() { start = clock::now(); }
    
    inline void sleep(int n) const { std::this_thread::sleep_for(T(n)); }

    inline double elapsed() const {
        return std::chrono::duration_cast<T>(clock::now() - start).count();
    }
private:
    std::chrono::time_point<clock> start;
};