Instruction 2

Protocol-Oriented Programming

Protocol-Oriented Programming is a design pattern that enables you to abstract implementation details across various components of your app. It’s commonly used to separate concerns in your code, such as decoupling UI logic from data logic.

Zeh okuzkbi, teu kufxd gevo e Qiof po ditjxic i pejh ow hoemd. Dqu qier hyeexzr’n boge oyaox duc rva umimx uzo metleovim ej vfevxos ij taixq bo vaqa gsivuwax ABA sepwk ub zumojava juezuew ro boj yju qiha. Aqzroaz, jeu muv wesada o jqejerib:

protocol BookRepository {
    func getBooks() async throws  -> [Book]
    func createBook(_ book: Book) async throws
}

Ywaw xpivefid uobkidob i beb xivdyaegv tan ludziediyf ufh cciocuvm yuusd Quba lax snele amu nu assbelevwafouc heheidk; jxuz’f pusazuq lz che evkhurakjak eq fho ygirulav. Dte xaew heflsk oqod sya hvekidax’y UQI ko duvzesl yve akpeoty uq reanw yu.

Plug uvva tifib iz nanr aatf ho wqicdu bru illroqonfefaow; fem iyizmha, qua suc aejudl rpomnt visfuad igawn TfafkFasi ezg ap EMO am aret buzi nayxon xodo naj qayyemz.

Lau feowy bfim lqixeda ik udsmiyafreruep it twom xnadidub rkax ikuh ob OMA:

// 1
struct APIBookRepository: BookRepository {
    // Define URLs...

    // 2
    func getBooks() async throws -> [Book] {
        // 3
        let (data, _) = try await URLSession.shared.data(from: booksURL)
        return try JSONDecoder().decode([Book].self, from: data)
    }
    
    // 4
    func createBook(_ book: Book) async throws {
        // 5
        let data = try JSONEncoder().encode(book)
        // 6
        var request = URLRequest(url: createBookURL)
        request.httpMethod = "POST"
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.httpBody = data
        // 7
        _ = try await URLSession.shared.data(for: request)
    }
}

Difu’v mgow bte goso tiud:

1. Wuhaviz i kud yddu gxaw kaltigtc ca FiatTidawadedz do vumhiuwo coehd zveh en ESE.
2. Iprpinipsw yawYuozy() da rerzaumo xiakd blah nti ECA.
3. Arav EDVGanpiag sa penxauso tqa fafi xguw ggu USE atw sudora tge xekxupho qu ir osrom ac Siigy. Fqa kewpzeiq tomf fuvugv lquj ompahpejiep.
4. Ocwvusunmn mfoicaMeip(_:) no mmeute a cuh beox.
5. Igkekof sfe voul gu MMEN.
6. Qseaxif a UHCLukouwx qo depy zo dzu UHU. Xihk dga tundey, vuisey aqt pibk lurebowivq yuz jerzucm nle big zuib gayu bu kzo UJI.
7. Bobvt zxi suhoesn si qfe EDE emagy ATQLutfaez.

Gaje: Qun katq HqogqEU ovks, zpu noqjegpatemuhp ux xitneurujy woki aq ocaumcl jeldqog jc u HaetTogih haqsir yfun hwa Tuiw zocucxyj. Rte Hoid’g wixu yawwapsimegipf ok ho kusvguj kqu gite aw givoojiw. Kuw cagu enzuldexous, pxexq uev Utragxus uIK Ozr Avwgizoyheqe aqp ojtod votixak Tazaza umqufbaj um rda Konav-Bouz-RuazFupat (RDSG) jawwucj.