#pragma once

#include <iostream>
#include <string>

//时间类
class Timestamp{
  public:
    Timestamp();
    //使用explicit修饰，防止发生隐式类型转换
    explicit Timestamp(int64_t microSecondsSinceEpoch);
    //返回当前时间
    static Timestamp now();
    //返回当前时间的年月日十分秒的字符串形式
    std::string toString() const;
  private:
    int64_t microSecondsSinceEpoch_;

};