package mainimport (	"fmt"	"io/ioutil"	"sort"	"time")type info struct {	Name string	Time time.Time}type newlist []*infofunc main() {	l, e := getFilelist("./")	if e != nil {		fmt.Println(e)	}	sort.Sort(newlist(l))  //调用标准库的sort.Sort必需要先实现Len(),Less(),Swap() 三个方法.	for _, v := range l {		fmt.Println("文件名称：", v.Name, "改动时间：", v.Time.Unix())	}}func getFilelist(path string) ([]*info, error) {	l, err := ioutil.ReadDir(path)	if err != nil {		return []*info{}, err	}	var list []*info	for _, v := range l {		list = append(list, &info{v.Name(), v.ModTime()})	}	return list, nil}func (I newlist) Len() int {	return len(I)}func (I newlist) Less(i, j int) bool {	return I[i].Time.Unix() < I[j].Time.Unix()}func (I newlist) Swap(i, j int) {	I[i], I[j] = I[j], I[i]}