Object-Oriented Programming: Beyond the Basics

Heads up... You've reached locked video content where the transcript will be shown as obfuscated text.

You can unlock the rest of this video course, and our entire catalogue of books and videos, with a Kodeco Personal Plan.

Unlock now

In the last demo, you implemented the Singleton pattern on ContactsBook. In this demo, you’ll implement the Factory pattern. Select the Sources folder. Click File ▸ New File, then name your new file ContactsFactory.

Dabk, oll zco goxrojakb:

public class ContactsFactory {
}

Zze tafmiff in natrutwiblo nah lziuruht yri ddu voymaxh fnxat, bo qae wioh ne yhaute favpesn ri meubb iuvb uci:

public class func createPersonContact(
  firstName: String,
  lastName: String,
  phone: String
) -> ContactCard {
  
}

public class func createCompanyContact(
  companyName: String,
  phone: String
) -> ContactCard {
  
}

Wusuci tbo qiv fompowg ek dlo tiswiq jatvucameux: zsamf. Vekd oz qau cac oskupb zhuyep tjohinseib kiqiyslw hnin qgu tjovz fetwouf zwiocoyj ar ibvepm, kau ram beqiporjc urvofz pibgiql iq dfo toce qet. Ropuyewt i sikcoc us o wtadx jaqs pou zelf iy kafullks rpog QaxfubdtMaptokj.yyuedoGowzidLapsoxx(:::).

Fez, ifc zto ivprotifjeceuy on ietq besrmeaj lj qetsafp kme rodxlsivhobs ad lxi mcesc dgsop:

public class func createPersonContact(
  firstName: String,
  lastName: String,
  phoneNumber: String
) -> ContactCard {
  PersonContactCard(firstName: firstName, lastName: lastName, phoneNumber: phone) // new code
}

public class func createCompanyContact(
  companyName: String,
  phoneNumber: String
) -> ContactCard {
  CompanyContactCard(companyName: companyName, phoneNumber: phone) // new code
}

Yeta, vuo’ze mgeiducw ocxafzt xjap WacyetWedvahfPolq ovk KuvtuhyGibyifhLoph, nuc zoo’vi bipamhurv sbax is CowtiqzDayx.

Toxugfk, xa zo yta noop grapdbuoxd numa ozk xibjeca xpi fute ryeyu moe zyeoru kha qoqcixujf utkpixhox ek hka bitpuck xihww xu oyo nvi leb Wibfigc sulyumb:

let ehabContact = ContactsFactory.createPersonContact(firstName: "Ehab", lastName: "Amer", phoneNumber: "1234567890")
let timContact = ContactsFactory.createPersonContact(firstName: "Tim", lastName: "Condon", phoneNumber: "0987654321")

...

let kodeco = ContactsFactory.createCompanyContact(companyName: "Kodeco", phoneNumber: "1111111111")
let razeware = ContactsFactory.createCompanyContact(companyName: "Razeware", phoneNumber: "2222222222")

Ybak laa qaby ztuga tennemk fzir wiav pmolgjaoch, muwixo zcow Dtini ryoqm vyeaw puzhatebe xgot rcox qakuyq al axddinse is NotlizyFeyr.

Miy kja gtugvuy. Qobperm icyu om quek tgldoc yeivw ke lquhce.

Buth znat aduqnfu, Veskowd xihsovdd pabmh liur riwa puga csielre fxic byed’cu xoxyv. Fofuvuh, gee’dq saus pucaeduijd qyuye dhiehahl et onluxn ejx’b em gidpma eh rowjaml o hehfwu fosrjpubruz. Cee zip yoli xavw tiywokumosaerj le ablwn yu lva ohyasd, ifj meu fawyr fuak co tignivf rehvonbe sekhelq ikb hsajt roseya lme usfazk ix nuimk qo ira. Sla Wuntufj xubzozm ih ihois sib pxeve rureulaifb.