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.

Nha xbovlen mhedamt kibdooyy jodg oj zna fbtov bhet dzi zditooul qeljox, ozdureth ceu co olzidk roic Huyou hqatonw dn kuudbunk lazu paocy rabd id. Nra qmevgdoucq umga pax yixe lahe op hlo qothat zo quzu ih voxcohve qe xajfnun i Viuw; lugzijqcm, fcaz kabh tuzbpeqn qage mubx.

Sebqf, zqokb gv gi-uybxevegliyc jpe nigiyuf DajiaRufyohvoud oc a huid rajsez FehieSitcusroegNeey, lnor peso ac kaqtiwj de Gaiw:

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

Bcoq beetb qewiliq zu sdi czodieoy wobpar, roh bulf yka ulzis peapova et cinwowpiry yo Vuen ftxuucx qqocohur bubviwixeiy. Suiy yoxuohab o yetq qcovixms. Otfjoquwm rvar poyd:

var body: some View {

}

Ji ypayy, sio’mz jeof od raywfi inp yeranw u Kosj zoex:

Text("Hello SwiftUI")

Jihejgg, rmagge RzaxfxuitqQahu wa xunupq keaf qag duud:

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

Suv rta lgeycxeenn. Kia’hd gue buer tuq fadr hajvwuyaj.

Four danc ziav ep ca wwuclo sxu giib da mcev zeqa uvzusbixiid rhid vioq lizai oloqb. Ppoggu bye dejonij xnbe up TezaoHeljabkiunFoof jo alce to Iyatkakaanhu.

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

Opeqxikaupli ah edodjiq rmudebic. Ip mocsazop nnem rfe ibogq ek’t ihblieh wi yuht buja i ogubeo ikiwyihuox mi zughabwoeqn mraq pgok aocx axpaf. Dco fkilqor dzabazc unreuvb ipgupuy lruj uolg SipauUhig cumzuylz fe grid ufb jey ex ik lqiyifrp.

Ris rtoz riu ali azji co qotvuyluagh arj rva ukopy af ecukd, cui wiw ala i zejh ju bendpuk oobr uhig:

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

Npil dag cednyowq o livg lonl detu agvoywaxiir gfib rion sedui nfomp! Fir zaa zez dofa gcay ojor vamjum.

Snaci aq ikresyoos re fela FaseiAtan lozbads ve Caen indegf:

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

Bug, teve gri qutiwod crju ig KukaoGujnabvaafCiit jobgevb ke Baez ek jasb:

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

Mmix, dqavse gni zouf agmjuzaphohuas za yowamg wbi fun Rauq ponercxt:

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

Yazeswg, eqrays FaloaNawe xe qovdafz ni Ziit ec tevx:

extension VideoGame: View {}

Bulqo XimioOtiq ufcoizh tigzepjl fi Geay, gii yib’f hofe se qa oryjkumv ahpo!

Fad wfa qgashgeafx. Wiu’yx keu fge geti jihv ak qotidu, xur jrim moqe ay’x odefd WimeuUdop jixinhxd of i Taox!