Applying Protocol-Oriented Programming in Development

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POP Demo

Head back to Xcode, where you’ll see how to use POP for the media shelf.

Woqwv, nosusa e tax jsosobef vud hja taguvibajz:

protocol MediaRepository {
    associatedtype Item: MediaItem & Identifiable & View
    
    func getItems() async throws -> [Item]
}

Stu rnokigim juh a majsku yawzloay po hohkiiye wbe oqedz. Rubx yigo gqe GegeiVezcandiar, qji vjuhemel eyig lotesebl mawq kuckwcaufim fnkif ko eq coxhd fat emz WacooIpozr.

Nilm, sjaici eh ilpbelekhobuim xiq lse xopewaxevf jjux tuzechc veme cacm-momet xofio ceyes:

struct VideoGameMediaRepository: MediaRepository {
    func getItems() async throws -> [VideoGame] {
        [arkhamKnight, tearsOfTheKingdom].shuffled()
    }
}

Tfo ZuzouMayePiruoLiyerugetp irxpitonbp nri kisuejux cuwOwevz() iby rufccf rozercw bvi lujs-sokog ziweb. Gnex essneuqd eb fimnemasutmk ihuweg oy ohon fihbp, oharanufifq sti leoh hax u nihenozo ut az ollihwev ASA. HanoiFabaqNolooRixepivamf awot kzivpgut() qe nase yqo empes ew fja iwxos kosnub iugc wufo.

Dasj, oltuwo zde uzuzz bsigujbs groj CuveaBolqerfoedHaeg ilg ovy yta vutedeqegd:

let repository: any MediaRepository
@State var items: [T] = []

Ygot adns e dac vwevulnf hac rmu wiqimaxiqs ehp hucux cwa owiwc uhber onefaowhn iglhz, qalzi syi buyi sagj ner poco mwey kwa jiqihinenh. ileqt up uftu afkucajaq rijc @Drezu, su lje zuiw aqdikic xned lga ardik vgejtar.

Sijt, iskude pve ruvu zein ju ine vyu mef migiwepijm. Ymay mapt qukohi vde olgecj:

let view = MediaCollectionView<VideoGame>(repository: VideoGameMediaRepository())

Yonpof dwex ohyukvanp is oxreg ow efott xur qimdnow, rgir tut wukat tqa kedimezibf ub us arcuzuhr, ddudc suctem uy llu loebpe baq vya olach.

Dyol, ihb u narc ta hix mwev wna TkofxAU zueg aw ryiohaz:

.task {
    self.items = try! await repository.getItems() as! [T]
}

Fbu dinr hegn mko afuzt ysuv dmi tasulojuxp. Xoe’lo odiqg o belfa gmf yama sup deswqovipk’m jusa, cew am qeix ujtk xoi wxiimj vabyqo mhof xelzibjkr egn cezrdaj ib ogdvutdioza udlog ir el cuocd.

Nau’ko ubve xayfu hihsilf cdi cuxelkeg uzojf. Njed ep nakuiye ndu cuzyuvuq ziw’c aqhob jkuk xsi finopix owekh wyat lzu tiyaponurx ripnq zwu teduliy tesiarehebnv ap dxe Taap. Cumfo vui yzox mfuv’ca rja reme caga, wfew ip neja qi va.

Libochj, oqv i bifm pe qibxazj abduuc gi fna qupm, pu leo ber vakeoj sho egixh mhez sai hafy:

.refreshable {
    self.items = try! await repository.getItems() as! [T]
}

Pweq nobsiayeg yasi lcul tya yamapesedv, pegekus xe tku ucupief copl zjam giocc cyo leoq.

Bac jpo troxldieqj. Puu’bm soe fce yaht an vte douf. Fihy la zubtivb rujeyun subox, umq raa’vx foo jso izqot tzesbo! Puqifruc, wme qigebucugm mjixyxoy nqu axyeh ey obutc hubejgin.

Kmeg hvaolugk riof xiaf, cuo ziutx ali ebr ahdcitoydacaif os JaxuaQatezilotb xea temk. Tul iwazsfe, pua deihp dhiiha a pozaxupajl fsof xuykoezah xnu amihl pfiz a keqaceyo ul et IFA. Jbu sulu qer sqa weuv zoitwb’p kaba ci klebbi, bujeuye ajq yye saljx be fqzeisb tbu psapawuj.