go---time包

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func main() {
	time1 := time.Now();
	testtime()
	time2 := time.Now()
	fmt.Println(time2.Sub(time1).Seconds())
}
func testtime() {

	fmt.Println(time.Now()) //2018-12-11 09:03:49.9369414 +0800 CST m=+0.004463701
	fmt.Printf("%T \n",time.Now())  //time.Time

	fmt.Println(time.Now().Unix())  //1544490230
	fmt.Printf("%T \n",time.Now().Unix())  //int64

	fmt.Println(time.Now().String())  //2018-12-11 09:03:50.1026053 +0800 CST m=+0.170127701
	fmt.Printf("%T \n",time.Now().String()) //string

	fmt.Println(time.Now().Year())        //2018
	fmt.Printf("%T \n",time.Now().Year()) //int

	fmt.Println(time.Now().Day()) //11
	fmt.Printf("%T \n",time.Now().Day()) //int

	fmt.Println(time.Now().Month()) //December
	fmt.Printf("%T \n",time.Now().Month()) //time.Month

	fmt.Println(time.Now().Weekday()) //Tuesday
	fmt.Printf("%T \n",time.Now().Weekday()) //time.Weekday

	fmt.Println(time.Now().Clock()) //18 46 7 时分秒
	// fmt.Printf("%T \n",time.Now().Clock()) //int

	fmt.Println(time.Now().Hour()) //9
	fmt.Printf("%T \n",time.Now().Hour()) //int


	fmt.Println(time.Now().AddDate(-1,0,0)) //2017-12-11 09:25:15.6777573 +0800 CST
	fmt.Printf("Addtime :%T \n",time.Now().AddDate(-1,0,0)) //time.Time

	fmt.Println(time.Now().AddDate(-1,0,0).Unix()) //1512955669

	fmt.Println(time.Now().Before(time.Now()))   //false

	fmt.Println(time.Now().Equal(time.Now()))   //true

	fmt.Println(time.Now().After(time.Now()))   //false

	fmt.Println(time.Now().Date())   //2018 December 11

	fmt.Println(time.Now().Nanosecond()) //971574700 
 
	fmt.Println(time.Now().Sub(time.Now()).Hours())   //0
	fmt.Println(time.Now().Sub(time.Now()).Nanoseconds())   // 0s
	//Add增加时分秒
	//Adddate 年月日

}