好的，我在使用標志時遇到了麻煩。我認為我目前在正確的軌道上，但是如果我輸入“go run *.go printrepeater 3 --slow”，我的 PrintRepeater 程序中的 println 將輸出 true，但是如果我輸入“go run *.go printrepeater 3 slow”我發燒了。testCli.gopackage main導入（“github.com/codegangsta/cli”“os”）func main() {app := cli.NewApp()app.Name = "Learn CLI"app.Usage = "basic things in cli"/*  app.Flags = []gangstaCli.Flag{    gangstaCli.StringFlag{        Name: "s",        //Value:  "y",        Usage: "slowing down",    },    }*/  //    app.Flags = []cli.Flag{  //cli.StringFlag{"slow", "yes", "for when you have too much time", ""}, // } app.Commands = []cli.Command{    {        Name:   "countup",        Usage:  "counting up",        Action: PrintRepeater,    },    {        Name:   "countdown",        Usage:  "counting down",        Action: GoDown,    },    {        Name:  "printrepeater",        Usage: "prints hello x number of times",        Flags: []cli.Flag{            cli.BoolFlag{                Name:  "slow",                Usage: "to slow things down by a certian amount",            },        },        Action: PrintRepeater,    },}app.Run(os.Args)}PrintRepeater.gopackage mainimport "github.com/codegangsta/cli"import "strconv"func PrintRepeater(c *cli.Context) {    println(c.Bool("slow"))    i1 := c.Args()[0]    i2, err := strconv.Atoi(i1)    if err != nil {        println(err)    }    for i := i2; i >= 1; i-- {        println("hello")    }}