Example to show the output of json using omitempty tag

withomitempty.go

package main

import (
	"encoding/json"
	"fmt"
)

type Person struct {
  Name string
  Age int `json:",omitempty"`
}

func main() {
  p := Person{
    Name: "Nikhil",
  }
  b, _ := json.Marshal(d)
  fmt.Println(string(b))
}

//Output
- {"Name":"Nikhil"}