How to create array of objects in golang?

Question

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.

Can someone point out the reasons for down votes, so that I can put my questions in a better way next time. — ravi
– ravi, Commented Oct 13, 2015 at 6:11

Amit Kumar Gupta · Accepted Answer · 2015-10-09 06:52:48Z

36

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)
}

answered Oct 9, 2015 at 6:52

Amit Kumar Gupta

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1 Comment

mvmn Over a year ago

"I would question why you're using Go if you were doing it like this". They need to represent this data structure. You would advise using a different programming language if they have to work with data structures that are like that? Weird advise.

lofcek · Accepted Answer · 2015-10-09 07:01:47Z

-6

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

answered Oct 9, 2015 at 7:01

lofcek

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