goconfig operations ini configuration file

package main

import (
	"fmt"
	"github.com/Unknwon/goconfig"
	"log"
)

func main() {
	var (
		cfg *goconfig.ConfigFile
		err error
		val string
	)
	cfg, err = goconfig.LoadConfigFile("config/conf.ini")
	if err != nil {
		log.Fatal(err)
	}

	val, err = cfg.GetValue("", "author")
	fmt.Println(val)

	//MustValue没有也不返回错误,而是输出空
	val = cfg.MustValue("", "mygithub")
	fmt.Println(val)

	for i := 1; i <= 3; i ++ {
		log.Println("#%d: %s", i, cfg.MustValue("courses", fmt.Sprintf("#%d", i)))
	}

	for i := 1; i <= 3; i ++ {
		fmt.Println (cfg.MustValue ( "courses", fmt.Sprintf ( "% D #", I))) 
	} 

	fmt.Println (cfg.MustValue ( "name base dir.Go explain .01-goconfig", "name ")) 

	// modify the configuration file 
	cfg.SetKeyComments (" courses "," # 3 "," this is a line of simple little comment ") 
	goconfig.SaveConfigFile (cfg," newConf.ini ") 
}