main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
"os"
"strconv"
"time"
)
func main() {
t, _ := time.ParseDuration("1h30m")
// 1. get the first command-line argument
// 2. convert it to int64
multiplier, _ := strconv.ParseInt(os.Args[1], 10, 64)
// 3. multiply the time duration with the given argument
//
// converts the int64 value to time.Duration to be
// able to multiply it with the time.Duration value
t *= time.Duration(multiplier)
// 4. print it
fmt.Println(t)
}
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