How to convert a JSON into a Swift object

.swift

import Foundation

// Converting JSON into data
let json = """
{
    "name": "Dog",
    "legs": 4
}
""".data(using: .utf8)!

struct Animal: Codable {
    var name: String
    var legs: Int
}

let decoder = JSONDecoder()

// Converting data into a Swift object 'Animal' instance
do {
 let animal = try decoder.decode(Animal.self, from: json)
 print(animal.name)
 print(animal.legs)
} catch {
 print("Error decoding JSON: \(error)")
}