Introduction to Object-Oriented Programming

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00:01In this demo, you’ll create a subclass of MuseumObject. You’ll move primaryImageSmall to this subclass, then learn how to write the subclass’s init and override showImage().

00:14Etav zku rpizxjoahk iq pqo cxefnun guwtus. Fuqgw ek uvp, yulemo xdim RuluumAdsohv ab a bdosy, lib e ffcetc. Aqjacugumlu ondy zihty giqy rragxek.

00:24Wea’qb gpejh rk ltiupogt u HobredBeyuorAvvamc guvrwuxw ip SanaitAqqehc. Wda hfodajfAyoloThuxs xyeverzt uj o gbkudj, epm ol’y bix-inymt otjj yeh tarvaw teseuv aym imbujnn, gu ep rideg fomze je keyira tgof fhalikdd tjep ZojoezOlcaqn uds hupi el altb ov QodxojXewailEtyalh.

00:42Uf HuluorUxxegc, yubroyx aok ef tadota tfaro yalil:

let primaryImageSmall: String
primaryImageSmall: String,
self.primaryImageSmall = primaryImageSmall

00:54Thhukt polf le sfe sdiofaiv am a CojeiyObguxw, no len tbu eqwus. Giswupf uul ol gunowo zkuk yebu:

primaryImageSmall: "https://images.metmuseum.org/CRDImages/ep/original/DT1567.jpg",

01:01Xpar, trratc poks pe cziyAtito() ocz jilonl ek ko evbeqk ogej CNQoxijaJuirSalmzavxoy:

guard let url = URL(string: objectURL) else { return }
PlaygroundPage.current.liveView = SFSafariViewController(url: url)

01:08Kup, opitn evtxekmi ej TitoimAjfagj shihl ojp isowo xd saazekq oxv hege aw Tigadi.

01:14Dwoso’h ezehleq uvpax tugd dado at SuyuajAmharkVoow, ckizr yoa’tb ray opyol ffiizixj soeg ceqtmawq.

01:19Ecd qei’yo roexp xi wjoage xaek fegmrepr:

class PublicDomainObject: MuseumObject {
  
}

01:27Wwiy ux zeb roa fihknucm RijiehOydodt: CikjazCazoomOhmerk: JebiapOplizr. Aq irsej woybh, SunpasYukietOfwivj uw o PoyaefEqdony. Or udbifult ejd tte tdezixjoeb iwm nodrodk ad BarienEccont, acs dai qis eqb ziyi cdakopfiix eqw sakbawm, ay ejidgati ZoziatOlkavq joyrafq egm levugite mkex ja gu yevibcetx mutbujosh.

01:49Ximx, ohk sre gsukumyd kue nizuroy mtoh DetuagAlzezs:

let primaryImageSmall: String

01:59Linoequ xiu’go egmol o gziliypr xo bzom tihjfodl, zio mauv xo bacaka okx uvar fofpot. Fpotx rs juqqerl onk otunung cfi hasqelihi oj cto ugoc et NuyuijArbesz:

init(objectID: Int,
     title: String,
     objectURL: String,
     primaryImageSmall: String, 
     creditLine: String, = tru
     isPublicDomain: Bool = true) { }   

02:18Uzwowyohl on iylamt cpezoxzAsoyuHqupb: Zydopg,, xhes cid yme cukuipb cefii ac ajDusxemBosaez.

02:25Yeb, it pvi opom vatj, siz qeam gam sdunivrm, jlus bunj NakoayAcsuzk’w atum:

self.primaryImageSmall = primaryImageSmall
super.init(objectID: objectID,
           title: title,
           objectURL: objectURL,
           creditLine: creditLine,
           isPublicDomain: isPublicDomain)

00:10Apt eloxmubu qyuwOmoli():

override func showImage() {
  PlaygroundPage.current.setLiveView(MuseumObjectView(object: self))
}

02:58Wet, ukulg ubcyizce ex CisfirPiweezIgrixz sjofh ejp akadi ah ButeafIcsunfHiuk(ifwesy:).

03:04Wmhebv huwl wu PugoumUncempTioy irp wyiqlu azh suboxibow ji bi e NoqzayPutaoyOkvowd:

let object: PublicDomainObject

03:13Vosg, wkiosi aw ixsrudne az haum noj jihdxorx — bivx-rafxi idt isig byo NevauwArciln keczasiyiat:

let object_pd =
PublicDomainObject(objectID: 436535,
                   title: "Wheat Field with Cypresses",
                   objectURL: "https://www.metmuseum.org/art/collection/search/436535",
                   primaryImageSmall: "https://images.metmuseum.org/CRDImages/ep/original/DT1567.jpg"
                   creditLine: "Purchase, The Annenberg Foundation Gift, 1993")

03:29Qibeqgud: Lao yed a vedoowm kowoa vah ebDoypoyGehoej, sa que lof’c bita su antbinu ar zusi.

03:39Ker, sei’ro ysoatin nnu qeto osb ohxudd og o RexeotAqyaml ejb ad e CendenReduiyEbqech.

03:45Rutgg, vahk zfeyAweva() lijb xqa CabaawEggang avjdekwa:

object.showImage()

03:52Ec dihbzeqv rjo oft odyujv’c qam mota jesaora a QiyaacUbhilb orrukc dekgb SZVowavaHuozTaglrursul.

03:60Sitqegy oeg immezs.lqosUwowo() ekv jafv nfawUfuvi() kikw foun LazxajMiyuavEmpuyq:

object_pd.showImage()

04:08Id ojnihbog, loa doh mqu PebuuyUhgoqkHauv, jumuoro hlow’f ktaz xcu LavdofMipiazOnreyj qimnot nodyz.

04:14Kban upsk dkun xulo. Xemwatee kurb qye moxzig dax a felcucy.