How to create array of objects in golang?

huangapple
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英文:

How to create array of objects in golang?

问题

我有一个需求，需要将对象数组存储在一个变量中。这些对象的类型各不相同。请参考以下示例：

  1.  v := [ {"name":"ravi"},
  2.         ["art","coding","music","travel"],
  3.         {"language":"golang"},
  4.         {"experience":"no"}
  5.       ]

请注意，第二个元素本身是一个字符串数组。经过研究，我考虑将其存储为接口类型，如下所示：

  1.  var v interface{} = [ {"name":"ravi"},
  2.                        ["art","coding","music","travel"],
  3.                        {"language":"golang"},
  4.                        {"experience":"no"}
  5.                      ]

然而，我遇到了一些编译错误，我找不出原因。

英文:

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:

  1.  v := [ {"name":"ravi"},
  2.         ["art","coding","music","travel"],
  3.         {"language":"golang"},
  4.         {"experience":"no"}
  5.       ]

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

  1.  var v interface{} = [ {"name":"ravi"},
  2.                        ["art","coding","music","travel"],
  3.                        {"language":"golang"},
  4.                        {"experience":"no"}
  5.                      ]

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

答案1

得分: 34

你要求的是可能的 - playground链接：

  1. package main
  3. import "fmt"
  5. func main() {
  6.     v := []interface{}{
  7.         map[string]string{"name": "ravi"},
  8.         []string{"art", "coding", "music", "travel"},
  9.         map[string]string{"language": "golang"},
  10.         map[string]string{"experience": "no"},
  11.     }
  12.     fmt.Println(v)
  13. }

但你可能不想这样做。你正在与类型系统作斗争，我会质疑为什么你要这样使用Go。考虑利用类型系统 - playground链接：

  1. package main
  3. import "fmt"
  5. type candidate struct {
  6.     name       string
  7.     interests  []string
  8.     language   string
  9.     experience bool
  10. }
  12. func main() {
  13.     candidates := []candidate{
  14.         {
  15.             name:       "ravi",
  16.             interests:  []string{"art", "coding", "music", "travel"},
  17.             language:   "golang",
  18.             experience: false,
  19.         },
  20.     }
  21.     fmt.Println(candidates)
  22. }
英文:

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

  1. package main
  3. import "fmt"
  5. func main() {
  6.     v := []interface{}{
  7. 	    map[string]string{"name": "ravi"},
  8. 		[]string{"art", "coding", "music", "travel"},
  9.     	map[string]string{"language": "golang"},
  10. 	    map[string]string{"experience": "no"},
  11. 	}
  12.     fmt.Println(v)
  13. }

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:

  1. package main
  3. import "fmt"
  5. type candidate struct {
  6. 	name string
  7.     interests []string
  8. 	language string
  9.     experience bool
  10. }
  12. func main() {
  13. 	candidates := []candidate{
  14. 	    {
  15.     		name: "ravi",
  16. 			interests: []string{"art", "coding", "music", "travel"},
  17. 		    language: "golang",
  18. 	    	experience: false,
  19.     	},
  20. 	}
  21.     fmt.Println(candidates)
  22. }

答案2

得分: -5

完美的Python语法，但不幸的是Go使用了一些不太易读的东西。
https://golang.org/ref/spec#Composite_literals

英文:

Perfect python syntax, but go unfortunately use something less readable.
https://golang.org/ref/spec#Composite_literals

huangapple
  • 本文由 发表于 2015年10月9日 14:29:36
  • 转载请务必保留本文链接：https://go.coder-hub.com/33031354.html
  • arrays
  • go
  • variable-assignment
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