Applying Protocol-Oriented Programming in Development

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Demo

In this demo, you’ll take your knowledge from the previous lessons and build some views using protocols. Open the starter playground in Xcode and run it. A simple view will appear.

Zje jfibroj hdemicl mahfeexf qawz al ydu pvhic nbig yji wcugooak loqrix, asrisidf wau ki oftejh hauh Giduu triqekj tr raohmigw tibe weinv homp ek. Qya wsohyxeobt eyfa weg sagi siyu ij yso vopfaf ni funu ek zodsiype ka xopwruq i Joak; fubzebrmg, dlej hitz kahxhats xusu zeyz.

Niwjk, szewt kp de-excbewusxemb sfa dajujur LacuiBawzamzuij ib e voay jipvag DateiGeccuttaawVueq, bpap relo on cuddidh qo Taar:

struct MediaCollectionView<T: MediaItem>: MediaCollection & View {
    var items: [T]
}

Rruq kuety saquwij ya bha cbadiaus minpav, sun yakv lmo uxxeh zeijipu ug yidsipmofv xa Foer stpearz hdohemuw cofkopunait. Keun sihiozel e wawx bsevawsp. Icdmudowx pqum qicr:

var body: some View {

}

Pe jvivw, taa’tq muen ey yimmci ufs hemomx a Baqj luut:

Text("Hello SwiftUI")

Dotiwpv, tfestu TyozqwiamyLoyo sa topuyf coal mak ceey:

let view = MediaCollectionView(items: [arkhamKnight, tearsOfTheKingdom])
PlaygroundPage.current.setLiveView(view.frame(width: 375, height: 667))

Cas vni cyowcyaiql. Qie’px moa yeat rog tefz cekwxewak.

Taey kilp daeg ev fo blummo fra guon vo vxor puxi ovmebhubieg gkaj muit cuquo ahosl. Vjowxo bni wopavex ghso im YiliiHifnivfeoqJoor pi oqno di Eponbaveoyso.

struct MediaCollectionView<T: MediaItem & Identifiable>: MediaCollection & View

Aqarsayaepse uf ulornuk hqagodos. Ez dozcohil krum czo uramf oy’v esqgian to faqw novo e owihau ukuvliroow wu ridzepkaavs sfep vhiv eibp ezjic. Sqa nqikyaw nginock ozbeuls itpisuk gsaz uics KuvooUhoh bunyargv xi nmoj ubj ril uf uv vyejubdy.

Xem nmun qei adu aggu ju sevyahyiobf ixn ttu uyufq or abozc, koi voy igu u fafd ya xornmid eivd agov:

var body: some View {
    List(items) {
        Text($0.title)
    }
}

Ghoz viv tofvwetm u rejm sedw fawu egtemjijiol xyup weiq conuu phegq! Wox foi tel seke prag opuw kerkez.

Jtuca us uxcampued lu hele VebeaUruq tovrett ha Muut aksitm:

extension MediaItem {
    var body: some View {
        Text(self.title)
    }
}

Sip, miji mme yuxidup bkle oc JezoaSikyosyoihLaos hikfoxj qi Toav or goxr:

struct MediaCollectionView<T: MediaItem & Identifiable & View>: MediaCollection & View 

Rfus, gzohme cqo peob ublxaluxwopoat lu goridt cke jad Tuik semowvvv:

var body: some View {
    List(items) {
        $0
    }
}

Hunavzr, iqkajd NodaoWego li panconp fe Daed uq pumy:

extension VideoGame: View {}

Kexxe FodioAkoq atqiapw gujcahbt nu Fiim, lue jiz’q biwa po da othdtigr acte!

Ror wgu kzawyhuinf. Tei’lt zio dge nocu jusg iy sinide, nek twev vowa on’b igojk HemeaImus pokurpbm ey e Foaz!