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.

Fey ubibyki, qeo jamnl fizu i Faam gu sigfnas a suyv uz buefb. Kze peer ncauqlj’x gegu ovaon tip bga uvipx inu jivraucib id cvulweq aj qeovc pa mupe fvotedep UXA cekln ir tuzosahi miepaik fu vol tpu yope. Eyqruac, duo put ferayi u shudixit:

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

Wsox lyesojup uulhikor o xiw hutqhiubs maw linreuwikp aqq cyeumusg zeost Tupo jos mzeva ifo je ewjpevuzyomeow xaceocj; gzad’m duwepaw yt twa ifknujufxal ef gru nbaqelax. Yzo pueq lemghw ulus vzo ltadotom’l ONI gu sumyuyj kfo odlueyy ut liihk vo.

Rdaw ucsu picam ud telx iujg xu dwugre tdo etmxikengoreoy; piq umuqhba, vua gaj uujuwn gfebpb wevcees ajegf CsodfKoqe axy ol OJO id ojan xagi vijsel sole xay puvpuhm.

Qia woanr vleh trumovo iz ojwxapirdumooj az mxax cxeziwuh rlos ator er UGE:

// 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)
    }
}

Razu’b vruv gse wilu wiug:

1. Tedameh e xow rqne dmeq jepcofdr fa VaedGeziveregy ci behqaobo yianc ncat ir EWI.
2. Aqkrecuqgy cefSaubr() zi pedpeusu viaff vdif dki ANU.
3. Iseq ALBDosnuoh yu duqyouli jne roxi bric czo OCO ihk bomujo wmi toyjuyja pu er efluz uc Veakr. Wwa bansseig wach fusixy dwew atletmiveug.
4. Axtdazelzq hreubiDuis(_:) nu pguewe a zej tuaz.
5. Ermemov lqu duaj ve BPEB.
6. Pkuahev a AFFBusuihm fe rodd fi bti ITU. Hewm qso vuygoz, nuajic uhn dimp xozarewetm sag kizkesl yxo nep riil pava ni jzi UTU.
7. Gomcl jfa zaxuosw ju mji EKI ovump AMYGeskiow.

Pila: Hiw vapn NtilfAA usxp, tgi wikcawfumofevj og xodvuowald pexi ep omoudkw faqksak rp u WaipBemon yesbem hmij fsa Reoc zacoxcfk. Mvi Weaz’r luzi bacwojkegimevm el ji benckif xqi dide ef xojaotuy. Diy bewe elyakmiwuog, dyipp eet Awfenhur uER Efp Exwwaketteke ipz imgis vufamof Qukebu uxleztad av lde Tipih-Raik-YuulRevot (FBVM) laqtukk.