Go Standard Library Cookbook

How to do it...

1. Open the console and create the folder chapter04/recipe06.
2. Navigate to the directory.
3. Create the arithmetics.go file with the following content:

        package main        import (          "fmt"          "time"        )        func main() {          l, err := time.LoadLocation("Europe/Vienna")          if err != nil {            panic(err)          }          t := time.Date(2017, 11, 30, 11, 10, 20, 0, l)          fmt.Printf("Default date is: %v\n", t)          // Add 3 days          r1 := t.Add(72 * time.Hour)          fmt.Printf("Default date +3HRS is: %v\n", r1)          // Subtract 3 days          r1 = t.Add(-72 * time.Hour)          fmt.Printf("Default date -3HRS is: %v\n", r1)          // More comfortable api          // to add days/months/years          r1 = t.AddDate(1, 3, 2)          fmt.Printf("Default date +1YR +3MTH +2D is: %v\n", r1)        }

4. Execute the code by running go run arithmetics.go in the main ...