Go Systems Programming

Using Marshal() and Unmarshal()

In this subsection, you will see how to use Marshal() and Unmarshal() in order to implement the functionality of readJSON.go and writeJSON.go. The Go code that illustrates the Marshal() and Unmarshal() functions can be found in marUnmar.go, and this will be presented in four parts.

The first part of marUnmar.go is the expected preamble:

package main 
 
import ( 
   "encoding/json" 
   "fmt" 
   "os" 
) 
 
type Record struct { 
   Name    string 
   Surname string 
   Tel     []Telephone 
} 
 
type Telephone struct { 
   Mobile bool 
   Number string 
} 

The second part of the program contains the following Go code:

func main() { myRecord := Record{ Name: "Mihalis", Surname: "Tsoukalos", Tel: []Telephone{Telephone{Mobile: true, Number: "1234-567"}, Telephone{Mobile: ...