Codable+Extensions.swift

extension Encodable {
    func encode(with encoder: JSONEncoder = JSONEncoder()) throws -> Data {
        return try encoder.encode(self)
    }
}

extension Decodable {
    static func decode(with decoder: JSONDecoder = JSONDecoder(), from data: Data) throws -> Self {
        return try decoder.decode(Self.self, from: data)
    }
}

struct Language: Codable {
var name: String
var version: String
}

// create a new language
let language = Language(name: "Swift", version: "4")

// encode with one line of code
let data = try? language.encode()

let lang: Language? = try? Language.decode(from: data!)