原文地址：http://www.golang.ltd/forum.PHP?mod=viewthread&tid=2816&extra=page%3D1
作者：彬哥
结构体，数据排序
- package main
-
- import (
- "fmt"
- "sort"
- "strconv"
- )
- var testmap map[string]Person
- type Person struct {
- Name string
- Ageint
- Sexstring
- }
- type ByAge []Person
- func (a ByAge) Len() int { return len(a) }
- func (a ByAge) Swap(i,j int) { a[i],a[j] = a[j],a[i] }
-
- func (a ByAge) Less(i,j int) bool { return a[i].Age > a[j].Age } // 从大到小排序
- func init() {
- testmap = make(map[string]Person)
- var testmap1 Person
- testmap1.Name = "John"
- testmap1.Age = 31
- testmap1.Sex = "1"
- testmap["3"] = testmap1
- testmap1.Name = "Bob1"
- testmap["0"] = testmap1
- testmap1.Name = "Bob"
- testmap["2"] = testmap1
- testmap1.Name = "John1"
- testmap["4"] = testmap1
- testmap1.Name = "John2"
- testmap["5"] = testmap1
- testmap1.Name = "John3"
- testmap["6"] = testmap1
- }
- func main() {
- fmt.Println(len(testmap))
- people := make([]Person,len(testmap))
- // 1 结构提取值获取数据 append
- for key,second := range testmap {
- ikey,_ := strconv.Atoi(key)
- fmt.Println(people) // 从0开始的
- people = append(people,people[ikey])
- people[ikey] = second
- }
- // 排序
- sort.Sort(ByAge(people))
- fmt.Println(people)
- // 获取数据值
- fmt.Println(key) // 从0开始的
- fmt.Println(second.Name)
-
- }