如何在golang中创建对象数组？ [英] How to create array of objects in golang?

问题描述

我有一个需要将对象数组存储在一个变量中的需求。这些对象是不同类型的。请参阅以下示例：

  v：= [{name：ravi}，
 [art ，编码，音乐，旅行]，
 {language：golang}，
 {experience：no} 
] 
  

注意第二个元素是字符串本身的数组。经过研究，我想将它存储为如下接口类型：

  var v interface {} = [{name： ravi}，
 [art，coding，music，travel]，
 {language：golang}，
 {experience没有} 
] 
  

但是，我收到了一些我无法编​​译的错误找出答案。

解决方案

您可能要求的是 playground link ： b
导入fmt

func main（）{
v：= [] interface {} {
map [string] string {name：ravi }，
[] string {art，coding，music，travel}，
map [string] string {language：golang}，
map [string] string {experience：no}，
}
fmt.Println（v）
}

但是你可能不想这样做。你正在与类型系统作斗争，如果你这样做，我会质疑你为什么使用Go。考虑利用类型系统 - 游乐场链接：

 包主要
 
导入fmt
 
类型候选结构{
名称字符串
兴趣[] string 
 language string 
 experience bool 
} 
 
 func main（）{
 candidates：= [] candidate {
 {
名称：ravi，
兴趣：[] string {art，coding，music，travel}，
语言：golang，
经验：假，
}，
} 
 fmt.Println（候选人）
} 
  

I have a requirement in which I need to store array of objects in a variable. The objects are of different types. Refer to following example:

 v := [ {"name":"ravi"},
        ["art","coding","music","travel"],
        {"language":"golang"},
        {"experience":"no"}
      ]

Notice the second element is array of string itself. After research, I thought of storing this as interface type like:

 var v interface{} = [ {"name":"ravi"},
                       ["art","coding","music","travel"],
                       {"language":"golang"},
                       {"experience":"no"}
                     ]

Still, I am getting few compilation errors which I am not able to find out.

解决方案

What you're asking for is possible -- playground link:

package main

import "fmt"

func main() {
    v := []interface{}{
        map[string]string{"name": "ravi"},
        []string{"art", "coding", "music", "travel"},
        map[string]string{"language": "golang"},
        map[string]string{"experience": "no"},
    }
    fmt.Println(v)
}

But you probably don't want to be doing this. You're fighting the type system, I would question why you're using Go if you were doing it like this. Consider leveraging the type system -- playground link:

package main

import "fmt"

type candidate struct {
    name string
    interests []string
    language string
    experience bool
}

func main() {
    candidates := []candidate{
        {
            name: "ravi",
            interests: []string{"art", "coding", "music", "travel"},
            language: "golang",
            experience: false,
        },
    }
    fmt.Println(candidates)
}

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