Serialize (Marshall) JSON into a writable stream

serializejson.go

package main

import (
	"bufio"
	"encoding/json"
	"fmt"
	"os"
)

func main() {
	// create a json, then serialize into json
	json, _ := json.Marshal(struct {
		Name string
		Age int
	}{"foo", 42})

	// directly print to stdout:
	fmt.Println(string(json))

	// write into a stream:
	// **** here in standard out ****
	output := os.Stdout
	// **** however, this could also be a file: ****
	// output, _ := os.OpenFile("foo.txt", os.O_CREATE|os.O_WRONLY, 0644)
	// defer output.Close()
	w := bufio.NewWriter(output)
	w.WriteString(string(json))
	w.Flush()
}