package main

import (
	"fmt"

	"github.com/guonaihong/clop"
)

type T struct {
	Num  int `clop:"--num" usage:"a"`
	Rate int `clop:"--rate" usage:"b"`
}

func main() {
	t := T{}
	clop.Bind(&t)
	fmt.Printf("%d:%d\n", clop.GetIndex("a"), clop.GetIndex("b"))

	fmt.Printf("%v\n", t)

}

./t --number
error: Found argument '--number' which wasn't expected, or isn't valid in this context
	Did you mean --num?

For more information try --help