Codable lets Swift encode/decode JSON into your structs with almost no code.
A decodable model
struct Product: Codable {
let id: Int
let title: String
let price: Double
}
let product = try JSONDecoder().decode(Product.self, from: data)Mismatched key names
struct User: Codable {
let firstName: String
enum CodingKeys: String, CodingKey {
case firstName = "first_name" // map snake_case JSON
}
}Tip: Set
decoder.keyDecodingStrategy = .convertFromSnakeCase to auto-map snake_case keys without CodingKeys.Summary
Conform your models to Codable and JSONDecoder does the parsing. Use CodingKeys for non-matching JSON keys.