package main

import (
	"encoding/json"
	"fmt"
	segmentio "github.com/segmentio/encoding/json"
)

type MyStruct struct {
	MyField string `json:"my_field,omitempty"`
}

type MyStruct2 struct {
	*MyStruct
	Code int `json:"code"`
}

func main() {
	value := MyStruct2{
		MyStruct: &MyStruct{
			MyField: "test",
		},
		Code: 0,
	}

	res, _ := json.Marshal(value)
	fmt.Println(string(res)) // Prints {"my_field":"test","code":0}

	res, _ = segmentio.Marshal(value)
	fmt.Println(string(res)) // Prints {"code":0} - Not correct

	value2 := MyStruct2{
		MyStruct: &MyStruct{
			MyField: "test",
		},
		Code:     10,
	}

	res, _ = json.Marshal(value2)
	fmt.Println(string(res)) // Prints {"my_field":"test","code":10}

	res, _ = segmentio.Marshal(value2)
	fmt.Println(string(res)) // Prints {"my_field":"test","code":10}
}