time.Time を使用して Go で時差を計算しフォーマットする方法?

import (
    "fmt"
    "time"
)

func main() {
    // Create two time.Time objects
    t1 := time.Date(2016, 9, 9, 19, 9, 16, 0, time.UTC)
    t2 := time.Date(2016, 9, 9, 19, 9, 16, 0, time.UTC)

    // Use the Sub() method to get the time difference
    diff := t2.Sub(t1)

    // By default, a time.Duration value formats itself intelligently
    fmt.Println("Time difference:", diff)
}

Time difference: 0s

    // Construct a time.Time value from the time difference
    out := time.Time{}.Add(diff)

    // Use the time.Time value's Format() method
    formattedDiff := out.Format("15:04:05")

    fmt.Println("Formatted time difference:", formattedDiff)

Formatted time difference: 00:00:00