The time Go

This is the 18th day of my participation in the August Genwen Challenge.More challenges in August

Year month day hour minute second

Now := time.now () FMT.Printf("%#v \n", Println(now.year ()) // Get the Month fmt.println (now.month ()) // get the Day fmt.println (now.day ()) // get the hour Fmt.println (now.hour ()) // Gets the Minute fmt.println (now.minute ()) // Gets the Second fmt.println (now.second ()) // gets the nanosecond fmt.Println(now.Nanosecond())Copy the code

Time formatting

In the corresponding time format string: himself month: 1:2:3 | 15 system using 12 hours 03, 24-hour use 15 points: 04 seconds: 05

Format(" January 2, 2006 03:04:05") fmt.Println(timeStr) // Parse the string to time timeStr2 := "2021-08-16 Loc, err := time.LoadLocation("Asia/Shanghai") if err! = nil { fmt.Println("parse in location failed: ", err) return} parseTime, err := time.ParseInLocation(layout, timeStr2, loc) ParseTime, err := time.Parse(Layout, timeStr2) if err! = nil { fmt.Println("time parse failed: ", err) } fmt.Println(parseTime)Copy the code

The time stamp

TimeUnix := now.unix () fmt.println (" Convert the time to a second timestamp: UnixNano := now.UnixNano() fmt.println (" Convert time to nanosecond timestamp := now. /* We specify a timestamp and convert it to the corresponding time */ t1 := time.Unix(timeUnix + int64(60 * 60), 0) fmt.println (t1)Copy the code

The time interval

The time interval in Go is a new type defined through INT64

type Duration int64

The value represents how many nanoseconds, and we can use the time unit indirectly using a defined time interval constant

 Nanosecond  Duration = 1
 Microsecond          = 1000 * Nanosecond
 Millisecond          = 1000 * Microsecond
 Second               = 1000 * Millisecond
 Minute               = 60 * Second
 Hour                 = 60 * Minute
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Time.sleep (time.second * 1) // Millisecond (time.millisecond * 500)Copy the code

Operation of time

Println(" 时 代 时 : ", now) // add // 时 代 时 : ", now.add (time.hour * 1)) // 1 day after FMT.Println("1 day after: ", now.add (time.hour * 24)) // 1 Hour before: ", now.add (-time.Hour * 1)) // 1 day ago FMT.Println("1 day ago: ", now.Add(-time.Hour * 24)) // sub time1 := time.Now() time2 := time.Now().Add(-time.Hour * 10) subTime := time1.Sub(time2) fmt.Println(subTime.Hours()) fmt.Println(subTime.Minutes())Copy the code

The timer

Timer := time.tick (time.second) for I := range timer {fmt.println (I)}Copy the code

Constants in time

Month

/* Create a new type Month in Go. The value is 1 to 12 */ type Month int const (January Month = 1 + IOta February March April May June July August September October November December )Copy the code

Weekday

/* Define a new type Weekday by int, which is 0 on Sunday and 0 from Monday to Saturday: 1~6 */ type Weekday int const ( Sunday Weekday = iota Monday Tuesday Wednesday Thursday Friday Saturday )Copy the code

conclusion

In the time package provides rich methods, we can easily get the current time year month day hour minute second, get the current time stamp, also can be very convenient to convert the timestamp to time. Provides the time operation method. You can also use the channel implementation timer to complete some scheduled tasks!!