GO语言为结构体排序

package main

import (
"fmt"
"io/ioutil"
"sort"
"time"
)

type info struct {
Name string
Time time.Time
}
type newlist []*info

func main() {
l, e := getFilelist("./")
if e != nil {
fmt.Println(e)
}
sort.Sort(newlist(l))  //调用标准库的sort.Sort必须要先实现Len(),Less(),Swap() 三个方法.
for _, v := range l {
fmt.Println("文件名：", v.Name, "修改时间：", 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]
}