flag
- flag 命令行标位符
- flag.TypeVar(Type指针, flag名, 默认值, 帮助信息)
- flag.Type(flag名, 默认值, 帮助信息)
- 解析命令行参数(必须的步骤)flag.Parse()
var name string
var age int
var married bool
var delay time.Duration
flag.StringVar(&name, "name", "sx", "姓名")
flag.IntVar(&age, "age", 18, "年龄")
flag.BoolVar(&married, "married", false, "婚否")
flag.DurationVar(&delay, "d", 0, "延迟的时间间隔")
flag.Parse()
fmt.Println(name, age, married, delay)
name := flag.String("name", "zx", "姓名")
age := flag.Int("age", 18, "年龄")
married := flag.Bool("married", false, "婚否")
delay := flag.Duration("d", 0, "时间间隔")
flag.Parse()
fmt.Println(name, age, married, delay)
fmt.Println(flag.Args())
fmt.Println(flag.NArg())
fmt.Println(flag.NFlag())
使用
go run main.go --name "ww"