This lab aims to test your understanding of Go's time and duration support.
The code below contains examples of how to work with time and duration in Go. However, some parts of the code are missing. Your task is to complete the code to make it work as expected.
$ go run time.go 2012-10-31 15:50:13.793654 +0000 UTC 2009-11-17 20:34:58.651387237 +0000 UTC 2009 November 17 20 34 58 651387237 UTC Tuesday true false false 25891h15m15.142266763s 25891.25420618521 1.5534752523711128e+06 9.320851514226677e+07 93208515142266763 2012-10-31 15:50:13.793654 +0000 UTC 2006-12-05 01:19:43.509120474 +0000 UTC # Next we'll look at the related idea of time relative to # the Unix epoch.
There is the full code below:
// Go offers extensive support for times and durations;
// here are some examples.
package main
import (
"fmt"
"time"
)
func main() {
p := fmt.Println
// We'll start by getting the current time.
now := time.Now()
p(now)
// You can build a `time` struct by providing the
// year, month, day, etc. Times are always associated
// with a `Location`, i.e. time zone.
then := time.Date(
2009, 11, 17, 20, 34, 58, 651387237, time.UTC)
p(then)
// You can extract the various components of the time
// value as expected.
p(then.Year())
p(then.Month())
p(then.Day())
p(then.Hour())
p(then.Minute())
p(then.Second())
p(then.Nanosecond())
p(then.Location())
// The Monday-Sunday `Weekday` is also available.
p(then.Weekday())
// These methods compare two times, testing if the
// first occurs before, after, or at the same time
// as the second, respectively.
p(then.Before(now))
p(then.After(now))
p(then.Equal(now))
// The `Sub` methods returns a `Duration` representing
// the interval between two times.
diff := now.Sub(then)
p(diff)
// We can compute the length of the duration in
// various units.
p(diff.Hours())
p(diff.Minutes())
p(diff.Seconds())
p(diff.Nanoseconds())
// You can use `Add` to advance a time by a given
// duration, or with a `-` to move backwards by a
// duration.
p(then.Add(diff))
p(then.Add(-diff))
}
This lab tested your ability to work with Go's time and duration support. You learned how to extract various components of a time value, compare two times, compute the length of a duration, and advance a time by a given duration.
? Practice Now: Go Time and Duration Exploration
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