encoding/json: Can json add newline between each elements in slice

[caoruidong]

How can I write a slice to file in json format with new line between elements? Or only third party libs support it?

What did you expect to see?

a little compacter but still human readable

[
{"Name":"xx","Age":1},
{"Name":"test","Age":18}
]

or

[{"Name":"xx","Age":1},
{"Name":"test","Age":18}]

What did you see instead?

Marshal: not so human readable
[{"Name":"xx","Age":1},{"Name":"test","Age":18}]
MarshalIntent: too many lines, mostly more than one screen, low information density

[
{
"Name": "xx",
"Age": 1
},
{
"Name": "test",
"Age": 18
}
]

[jimen0]

Hi @caoruidong,

You can do it by using json.MarshalIndent. Here's an example: https://play.golang.org/p/VBxgYEd4BK5

package main

import (
	"encoding/json"
	"fmt"
	"log"
)

func main() {
	data := map[string]int{"a": 1, "b": 2}

	b, err := json.MarshalIndent(data, "", "  ")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("%s\n", b)
}

[martisch]

Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions. GitHub Issues are used for tracking bugs and proposals only.

For asking questions, see: https://github.com/golang/go/wiki/Questions

[caoruidong]

Thanks @jimen0 , do you have any ideas about slice?