golang將interface{}轉換為struct

項目中需要用到golang的隊列，container/list，需要放入的元素是struct，但是因為golang中list的設計，從list中取出時的類型為interface{}，所以需要想辦法把interface{}轉換為struct。

這里需要用到interface assertion，具體操作見下面代碼：

package main

import (
    "container/list"
    "fmt"
    "strconv"
)

type People struct {
    Name string
    Age  int
}

func main() {
    // Create a new list and put some numbers in it.
    l := list.New()
    l.PushBack(People{"zjw", 1})
    
    // Iterate through list and print its contents.
    e := l.Front()
    p, ok := (e.Value).(People)
    if ok {
        fmt.Println("Name:" + p.Name)
        fmt.Println("Age:" + strconv.Itoa(p.Age))
    } else {
        fmt.Println("e is not an People")
    }
}