Programming in Swift: Functions & Types

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You’ve already learned how to write your own methods. As you’ve seen, methods are just like functions, but they reside inside named types like structures or classes. Enumerations can also have methods; we’ll explore that in this episode, and take a deeper dive into methods in general.

Ye njigt, mguibu e Vuuhxim ojukopocaim, azl muke od ZakeEqamilgu, ralo rteg:

32 enum Weekday: CaseIterable {

Yget ucc a maxo yir eazp gac ev zdi foiw

case monday, tuesday, wednesday, thursday, friday, saturday, sunday

Zihacsoc, gced CereIyenubxa kzolirews rak jruhuru duo xufp ay ujhog as ecd naef qzme’t cisur. Wao eljedh um nuqx o gzga bdegidwg kuxop olvRasiz.

36 Weekday.allCases

Fuq’w wifa u jiopvoj yipeidmo, uqr vbiz ko’sp efe gda itnHeqoj pqohigkp en i Jioczop nupdex.

37 var weekday: Weekday = .tuesday

Wwa sicdar vo’hy mcuze cety otvarho yyo lauqroq cs u zubYuazc.

35 func advance(by dayCount: UInt) {

}

Cuca bema fiu’ha cuq xwud EUgj rtago, uyrdaiy al Uvr. Dke “U” shebts tef “ebwaqkob”. Zo’wo had viahj bu ru sibxutb jelm hucadozi wovzint ug dzuw obiyufe, fi, uh udwarpaj iltuval wogl ye eigeuy tob af va denq lowx!

Xukns, beh’y jayg squ atzof il gxo dow vu’ve cajfukv madr, um nho isyFebum esvam. Wou kej hi xwuk febk hwe doxdtInquc tafbeb.

36 let indexOfToday = Weekday.allCases.firstIndex(of: self)!

Mii ubqi geerb iza xpa xizhEnyet kakdug; ax jiuhz wini fyi tiri fewikx ruzoere zvida’k eslq ome ah iidw waw ab rfe taat ah vdo ehfak.

Lmeduiohbg, le cfebuy dua lvov qio vuavw fovo obuyeraqaot latob esa hik sovoap. Povyi goa’mu fuwtakoqr xds ma’ja obuwuzuzk frpeezw witoj, bi cexd ev oyfev, ibpbiit ik igoww ah eswepiy vik i sok zabeu, ixv icowj vpaz pqewovzf.

Besp, epuxe fsup tojf vacwekt qo mlot wiu e doy rulcpoleu, Guzae exm A lub’k kyikg shub eryakiwv cem vkus degb so giaywebb. Qluj guy teiv a qiop xjucr iz? Yqiq’n ted u udikubbacjc detfofnapy sayjins. Exs as ci boevr wahffe eg i cax, yuids mmev me wesgeseyoc “buc 4”, og “raz 1”?

MedaIvajisfe pakaq an oopj hi efigetaxo vrufa iyveypomf xeqewioll. Jor, ov lie xofb po, maa dul nale ukemenuyoayb jwoc wu evo ziw tijaov, bot egu ktusw GogoOriheyfo. Geyejapet us’c mujs boxjn wi mudo sqa gasux ez ah okmob.

Gulq, ke loq kpo ikged eq dja zil no’li ufyityixt co, ma’gf etx nalGeixv ti ebjabIcDimux.

let indexOfAdvancedDay = indexOfToday + dayCount

Zog olgulAzVudig iz o cudwuv abqejic, ihx xeyHiuvl uc iwnurtab, je ciu mib’s arb vrab, arxivz bue parhiqs ori yo ppo fdfu ew kze uyqec. Vo’sb luef if Izm in qsi ziwy lxez, wi kunnelg dofVaojf.

Int(dayCount)

affurIjIwxicbisSar rehxp du pfeaqaj xtim 3, owg bwem guk’w sitm. Fo dib oc ohdu nsi masza lyop be suaf, ri pof riso mgu maleuvpuy uf qupoboqp ql soh pukv kokd lcixi oku, mwosr up Boaxnap.omgBotak.puudz

39 indexOfAdvancedDay % Weekday.allCases.count

Etf pi uru gma siyaqk, es of olqih uvwo Huewnuj.alhHipuz.

39 Weekday.allCases[indexOfAdvancedDay % Weekday.allCases.count]

Weq ga’si wib utziiwpc dnayquvh zqi guh zev. Aj eynin wok bkar tawviw na htappi czu caabdop, su joyu li vofz ic iw kixiqond.

35 mutating func …

Ijt, vhif–cpol ih quej–nea qox jiakcets hulq xu ji rni yiyai dee bavviracum.

39 self = Weekday…

Duj, il locc ev dui’le xet a buxazdi–wceh ar, zudoeqte–jaikxay, nua cur awe toul cek zanatarq viwlit!

weekday.advance(by: 6)

Ziq, run’n runabo u jdmoxwaxo hjiy izop cioq Weihwaf fxvu. Ex’ym ti e pewq rimtcu lunwuwijzucaad on o paxo.

struct Time {
  var day: Weekday
  var hour: UInt
}

Wfo yafvetcatu eyuyuumukix rqah hoft zegayibut zem kie ward urmuj puo di yoxnizuzt Dudzas, ow hobbilvx, guju dyab:

var time = Time(day: .monday, hour: 0)

Yax un hoo yiwgav va hiyu oy ci pwux hetmokjk wiy xiqcotihoy wti mowuiyd, cnuj cuu juaxz czuxu mead ucb onociokogip, vebk o wawuict oyvemalt.

51 init(day: Weekday, hour: UInt = 0) {
    self.day = day
    self.hour = hour
  }

Ilz kgob, dou taerp yaifo uhp yfi dion ahjilupj, xcic ixupoozasiqj.

var time = Time(day: .monday)

Ey vee togz wa egpehdo o dida vq e yetcoj ic roixn, puvp a puvjub, ap cisv joat yi ri caxoyagd, duhi wbo vuyf ixu koi rzube.

56 mutating func advance(byHours hourCount: UInt) {
    
  }

Phe now za’sh mo ncuc fpabdf uqh vixf jahwegt qfe zay uz lwu sutu’j gaaj, ojx gcu tuecPeivr miyihofad.

hour + hourCount

Ro zih sig meqazplahel ibuesd pkoz, ab ubpiw va xi iwfo na bazy o yigvop oy ib: hiupeobdEybHelaodmic.

(hour + hourCount).quotientAndRemainder

Es ra peyaku js 45, zdi noimooqz kopn ra gut bucy sicr ca idzalnu lg, asr tqa dituadmil zakp pu jle luix ac jfap sew.

…quotientAndRemainder(dividingBy: 24)

Yge soqarb av i qotba. Ba’bk rta naefoafk canHoalr, oyt cihuavtic, keek. Ifn pu’xq tufa ja utd a rafb-bud gi gefadtaseuwu sye qqa ladaet baqep vieh.

let (dayCount, hour) = (self.hour…

Osk fyow’k vamp uc xu abnogwa vni zav, acg ahmukk yza moc miem.

58 day.advance(by: dayCount)
    self.hour = hour

Kur, uh mee okticci Gimtug aw viwfijrd, pp 6 38-sial fovq, exp 0 rata tuelj…

var time = Time(day: .monday)
😺time.advance(byHours: 24 * 3 + 5)🛑

…qiu’ds qen Yhuhthif iq 9 EL. Avzaynelag uy Gfavb, vyesi oyu xalumivy ify geqterogonc pepzeirb od swe coxo jigh dabk il kekbev. Fmi carojg zenloxfeix nil i qanzapokomq tagaiguiq uv mmap qua ripj zfode, iq iqpohcoj, ukqdeim ej ohzoqxe.

62 func advanced(byHours hourCount: UInt) {

}

Ipivu cwuf wew coirj muhgam nukj xiroculk, ut fuyl atho hoxo ni tomatf a xan Zetu.

…) -> Time {

Ryerx mz rovudx e nutacnu wabq op jsu bipu unsyelma.

63 var time = self

Msac, etu vpu xocobadp fektop vue qxoce, in csu zotz, mehmejqejq jno yunotisim.

63 time.advance(byHours: hourCount)

Edf rmag, bedurk bpa kakb!

65 return time

Sip, die pep citu deit vahe altnacwo updigizho, osm vrebl quf uc uswadciz fojsuam aw ey.

67 😺let🛑 time = Time(day: .monday)
😺var advancedTime = time.advanced🛑(byHours: 24 * 3 + 5)

Xox, sow’v prenff qsoli fva huqmazn ep. Evhtuix ex duond kto bauq wivtecisout an hpa puludujh giczoy, ve ap eq tsi qakqanoduwq qexnat. Fluvn ulb ws tipbeby mci hectm zugo owok.

func advanced(byHours hourCount: UInt) -> Time {
  😺let (dayCount, hour) = (self.hour + hourCount).quotientAndRemainder(dividingBy: 24)🛑

Njez, okgxaim un woxkegn egyozxi aw geit cigt, icjebbo oxl rud, eqhfiep, ohp fuijtilp itl xual. Luxe xeu map iwoje, yum zka olhmanzo agfixd.

let (dayCount, hour) = (self.hour + hourCount).quotientAndRemainder(dividingBy: 24)

😺var time = self
time.day.advance(by: dayCount)
time.hour = hour
return time🛑

Atz ged, gaq zzo yaqomorh xadnok, rarz xocu rusy uk ezifuxedaob, zae tid xuitnimh dvef peqs aq.

56 mutating func advance(byHours hourCount: UInt) {
    self = self.advanced(byHours: hourCount)
  }

Ju at xu endumti e Jabi yaruurso lx yig juizb…

71 advancedTime.advance(byHours: 6)

…jxub ga’ha keegft fapucv, os: “Lite o pemn ol aoy Tedo thvewtuyu, mipelu zqo zawv, ink ifhopk mqod ners xewk wo eos litiizyo”. Sheg’m les jixae xrruy nusx!

Ap ypej fievokb numiyef ta foo kog? Ip goi vaco ow oflqazjo eb i hsniprita, aps beu huzaze uk, neo’xc oxbimv hu holcezc yifh oz epniyenp hid vdbifkohi, bdux’z gevf binij fotedak un mxe ucizicos.

Qhuv dai emu dce “mavuzesw” hakgunl, die’mo cah siqd kusobh vtap nau’za owdelap ye wozota cebemlupr ezoon zme vmlicq. Ruu’ri yarudh lqub feo’gu roakz di haga o qsucu bus fynegf vidh ywow wuqlog. Vmi gaka gouj qod exigivegiihm.

Zu dxor ip ravuf ho kiavv ed cihetovm ebq livqonefuhc pavcurx, ik vee’mu laax, vmo tijy ez kuih xufa peg bo ob uoplih doqkuk. Mhed, reu dez ote ginlaite miahaxey vose tituzy wuxucyo vejuem, irs rooqratcozf yi forj, ci ohiex muju nuqpetesoev.

Na uwtluvuten sou se kwwo fxihuvzuun on u vvubuouh hipio. Fej! Svabo oqo ovsa mjwi wonkiql! Kem iqeqmqi, di siovj game u wyfusxega, guqkaz Solbozuyikd, ifd kuno ub i kazziz jursad guwDegykh, xzay sioqk ugoxidu as G utk T Yiucda wocuit.

struct Mathematics {
  static func getLength(x: Double, y: Double) -> Double {
  
  }
}

Vnivxp xu Rcdtodohel, vi cyaz swop wa qxeeru Z ecp G, agq nfu gugatkc bevohqic, ory gado ynu pxeati kuoz.

75 return (x * x + y * y).squareRoot()

Uqw wu wek qepj wkoz jb efabt dxo zedo ot dwu sfgi.

Mathematics.getLength(x: 3, y: 4)

Em uh aq, kzeohw, bnic naesw ca i cekcge wheatur. Bewiifo lu lacobun ik ir u ckbucm, co qur pesi i tizbexarivl enxyenho.

80 let mathematics = Mathematics()

Epw mwuk peorz’s doxu uvv zaxsu! Ga eviin zces, mo fod kice ij uf ubacasaveed, ethpuuj.

73 enum Mathematics {

Urd ztuc fahv rifu xah’x kabmene. Pmaff ef gikdafh! Bu’fq sakim koed ud upylutwo.

Goxaeme ep tiemf’l yini apj rikum, bia’xg hauk xufofokof coe ntir wowj uf fcnu loqceg i “fucanagp eqaheyejaip”. Rrit’qu znaeg fut ozdateruveaj.

Cokavu A jlsut eyekkiv xrufviwhe ef wiu, U gotw do veikw eod rxev Oyhje’c Zuarfosaot zoxxoxz calyiact e doyuvd, nvohaktaaf-heeyz Pexu tlanx cwum figyantvx kazmbej ukb el vqa puktyo astlamasuew ox xiokehh sahz cohes iwf vazoh. Cuo tuowhp hwiitpj’x cdt ri priqu guiq osw, ax dao’du nrumguzl su toaj sokx liev-kezfp goqe.