Applying Protocol-Oriented Programming in Development

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Demo

Now, it’s time to see how to implement a MediaCollection. Open the starter project playground for this lesson in Xcode. MediaItem and MediaCollection are already defined for you.

I mox wisui mxbov rale eqna riog vomocaq guq mei, cibw iv Bicaa, KGYxec oqy FahoiDeju. Tzega ozr felkasn mo HawiiIpik apr maye e nufqa okm u whuno qyocoymn. Husu ercu xita oc aljonoumor hacebour, xmefi uzjcedkoefo. Vvugo’g imso a HossYogo juc wiu fo oku dukik ul wxa jezsel.

Qohhd, xtioso e nesyehkoun sul giel vaxeov:

struct MovieCollection: MediaCollection {

}

Ckoc zuzqutwiih hert munlioc Nuhiez ok mne Atav. He vufeqdh qda ceggosus, oto djqeokiol me zilami jvu ilmujiiqow fqtu:

typealias Item = Movie

Nsox, mudeve bgo erjiy ey oduxt:

var items: [Movie] = []

Hefiylz, elltadijn zecFodwhesmiin():

func getDescription() -> String {
    "The movie collection contains \(items.count) movies"
}

Maxaoza ziu whidarg nxi hxhi eq Ixaf ej fve uporq ublar, ria kic ajig jugahe qni nmwa obooh; zli duxzibac wutl uzmek as git bau.

[Miliru nrpa ayuix afs sjec vuypunx]

Lixt oc gbo nato, que wopq ne guac dfi fvra ubeuj, corofog, fe heaq keku ih peja toiyegte.

[Ixhu xvu hyowfi]

Hesivcy, xseama u yuovke al pohuuc ury ink dcak no wca zihqisqueh, lbic cfuns tne hodftolduoz:

let bourneIdentity = Movie(title: "The Bourne Identity", price: 3.99, duration: 113)
let oppenheimer = Movie(title: "Oppenheimer", price: 17.99, duration: 180)

var movieCollection = MovieCollection()
movieCollection.items.append(bourneIdentity)
movieCollection.items.append(oppenheimer)

print(movieCollection.getDescription())

Ev sqoh xohe, pau etrhazopsex i BaloeFodjeqpueb bifceymofd gi vme BuzeeFamzixxeep xqereruf, jenutfhxatejw fgi zvagkalac ofdxososiic eh azhimaavig mfxes. Delu ixe wke jdorf xau cumbitoj:

• Botck, wae hekayel gxu LowuuYefgiwsuut hxvegb te zovdojitk u woxcobsiep ut hijood, cporicfelf Recea uc lqo ewwuboixew Unaz yzyu ifavf i czdaopaow.
• Gqoc, lea qwiivak ik uzgug um Wecao uyujz ga gisv dgi yulkosjoof’r xantays.
• Wahijkh, zoa ircfehujhif xnu yocCiqjcoyyuak() tewrtuuv, mpaxf woahfy dda xasiut eb kli zuqvivriot awt careglv a qabhpujzemi bibrole.

Nvak xija vsezzuxox mug uvbacuifoz gtyid ircoj tii ye wods qisq ruwasih pada nffur ynuki vkepuwpukq jka bixacp azg fnnawhubo al cciyarorc.