maps.vs.structs.structparser

structparser.go

package main

import (
	"encoding/json"
	"fmt"
)

// Example is our main data structure used for JSON parsing
type Example struct {
	Name    string `json:"name"`
	Numbers []int  `json:"numbers"`
	Nested  Nested `json:"nested"`
}

// Nested is an embedded structure within Example
type Nested struct {
	IsIt        bool   `json:"isit"`
	Description string `json:"description"`
}

func main() {
	// Define a JSON string
	j := `{"name":"example","numbers":[1,2,3,4],"nested":{"isit":true,"description":"a nested json"}}`

	// Parse JSON string into data object
	var data Example
	err := json.Unmarshal([]byte(j), &data)
	if err != nil {
		fmt.Printf("Error parsing JSON string - %s", err)
	}

	// Print the name
	fmt.Printf("Name is %s", data.Name)
}