Golang按结构体字段排序数组
golang的sort包提供了自定义的排序接口Interface，此接口包括三个方法。实现这三个函数即可调用sort包的函数进行排序，示例如下：
package main
import (
"fmt"
"sort"
"time"
)
type Event struct {
id int
CreationTimestamp time.Time
}
type EventList []Event
func (e EventList) Len() int { return len(e) }
func (e EventList) Swap(i, j int) { e[i], e[j] = e[j], e[i] }
func (e EventList) Less(i, j int) bool {
return e[i].CreationTimestamp.Unix() > e[j].CreationTimestamp.Unix()
}
func main() {
e1 := Event{
id : 1,
CreationTimestamp: time.Now(),
}
e2 := Event{
id : 2,
CreationTimestamp: time.Now().Add(time.Second * 60),
}
e3 := Event{
id : 3,
CreationTimestamp: time.Now().Add(time.Second * 120),
}
var arr []Event
arr = append(arr,e1,e2,e3)
sort.Sort(EventList(arr))
for _,v := range arr {
fmt.Println(v)
}
}