sort函数使用自定义数据排序使用

package main

import (
    "fmt"
    "sort"
)

type ServerSlice []Server
type Server struct {
    Weight int
}

//只要实现了下面三个方法就可以传入sort方法使用
func (p ServerSlice) Len() int           { return len(p) }
func (p ServerSlice) Less(i, j int) bool { return p[i].Weight < p[j].Weight }
func (p ServerSlice) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }

func main() {
    ss := ServerSlice{
        Server{Weight: 4},
        Server{Weight: 3},
        Server{Weight: 6},
    }
    sort.Sort(ss)
    for _,v := range ss{
        fmt.Println(v.Weight)
    }
}