duanchique1196 2016-08-20 22:59
浏览 19
已采纳

从结构中的嵌入式切片访问值

I am trying to access values from an embedded slice in a struct. How can I do so via indexing, and without calling the private embedded object explicitly (which is not even an option when accessing from outside the package), if that's possible at all?

package main

import (
    "fmt"
)

type A struct {
    aSlice
}

type aSlice []string

func main() {
    a := A{[]string{"hello", "world"}}
    fmt.Println(a.aSlice[0]) // works, but can't be accessed outside package
    fmt.Println(a[0]) // doesn't work, but looking for this something like this
}
  • 写回答

2条回答 默认 最新

  • doudou8783 2016-08-20 23:21
    关注

    I think I found the answer in this post: golang anonymous field of type map

    Only fields and methods may be "promoted" when you embed. For everything else they act as just another field.

    In this case the struct would be the equivalent of:

    type A struct {
        aSlice aSlice
    }
    

    Which makes sense why its values are only accessible via A.aSlice indexing.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(1条)
编辑
预览

报告相同问题?

手机看
程序员都在用的中文IT技术交流社区

程序员都在用的中文IT技术交流社区

专业的中文 IT 技术社区,与千万技术人共成长

专业的中文 IT 技术社区,与千万技术人共成长

关注【CSDN】视频号,行业资讯、技术分享精彩不断,直播好礼送不停!

关注【CSDN】视频号,行业资讯、技术分享精彩不断,直播好礼送不停!

客服 返回
顶部