JSONSerialize.swift

import UIKit

// Use Basic Encoder & Decoder By Codable
struct Book: Codable {
    var title: String
    var author: String
    var price: Int
}

let book1 = Book(title: "Hello World", author: "hcn1519", price: 10000)

let encoder = JSONEncoder()
if let encodedData = try? encoder.encode(book1) {
    let decoder = JSONDecoder()
    let decodedData = try? decoder.decode(Book.self, from: encodedData)
}


// Make Serializable Protocol
protocol Serializable: Codable {
    func serialize() -> Data?
}
extension Serializable {
    func serialize() -> Data? {
        let encoder = JSONEncoder()
        return try? encoder.encode(self)
    }
    
}

struct Laptop: Serializable {
    var name: String
    var type: String
}

let macbook = Laptop(name: "MacBookPro", type: "15 mid")

if let dataOfMacbook = macbook.serialize() {
    let decoder = JSONDecoder()
    let decodedMacbook = try? decoder.decode(Laptop.self, from: dataOfMacbook)
}