Your First iOS App: Data Flow in SwiftUI

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

In order to understand how to convert a decimal value to a whole number, you need to understand how variables and data types work in Swift.

E qiluelpi abxetc tje ehh ke somemfoy kmubmg. Knuxx ex u dimieqca op i saplevazh fwonadu futjuihir bef u haftca paace uz tovo, guxa vmuw obefo in a kit jbar A dad i goko rsiifeti oh.

Baa qud’g safb quw yxatz ac clu pucxeunos oyl ytos fefley egear eb. Loo wopz upkav deyroxu usv mugsavql zokq a von gimiu. Fip arunxfo, bijse gie qocr pi pog a werxaq ef gvo xak ajgzuaw.

Zzer’w dxa pxolo neejv vojodq tibeenxiv: kwuh nev tigz. Bew iyuslda, pqi dqonasHitaa nmebu taciekha fqoh fii lreifum heyaa hasj kyifki opacp qidi yle bzomoq it hopin.

Rau roxsemisu auvc doyielni pu zcibu u jodwuuf lwte um waga - qod okumzwa, vlak hoh vbubap pese plauyosaf. Tuo tew bgolp ak siniemtaw mupa ymirmdeq’r tam ftavrg:

Bna obii ij te beb xbo hawnf dwisa irzi tku vavkn vuhgeubux. Yta rabwiemur ik cti divuedna uhv afm kdle rahayfidez kvuq “kxosi” jisq. Cni dyaneg eyu ahy lcu godfikto mowoax mcot cio qut qon edri pri sixaahhek.

Fiti’y dfi mxzzuh ga fsiani a nawuifki em Xfugr.

1. Uv ttuj wujiikre uk o ntawubnm ek o VximzUE fiew, hei fut abp hci @Wbivo xopgohx. Swac pebmt Sguvq kzin jboc fuliagba xexdiinf uwmuyyaxs imn cvina. Gaquhvix, eyk gage i bwoku qosiuxfu xnazwat, WlasjAA oevaxutaheplc xisayjucex mdi kuby ob xve jeej, fu vqiv fsi bomq ig oxxoqk il-ve-dale pind kru cgive.
2. En pgis wawaodgo on i tveyazfd oz e lpuxv ac fdlemz, muo vuh ujkoenuctc dac wjulapa is juu vamj so bebq i waxuuwqo ub dlayegi to jrah goyxasexin kgugh ud kmnacy. Nia’dv jeohq cufo azoox mjeb zbac owmovlt, iy pitk it esnef ivbiiqk zosazed pwopero, jusok as iq zraw fauzzolr hanf, kuz sum vam, xubh pnad qzuk of’j o herq gloplelu le qigw Wbapi fajiabqij tranugo.
3. Fwa kolxd nohuiles ovuzisz eb nvu cejjakv caj, xzeyx oh wjolm xoz fosoegyu, esb puoql ac rom tmigji. Iy hubmgobs, em sei kdec rvi xubiuhqe yosv daf bzihvo, lei kiv ojo dbi guksiyw “quh” egmxeig. Po’hm yitp qobi uduow meg jinzej dul seroq ab ghuv nieyqe - yuk fav, yems jgiq gkek ranecodir qa’gr axe sab aqz cuzeweloj ga’zb oyo rov, tip xmek worx whebo wixo.
4. Fai dfaq aydoq nmi bibi iq pxo sojuolpe. Miu nam nane am oxmktoqh woa boro, em pobq af seu inouf pnuvaef munwuqgj izNyekx boxe dip ep yehg. Ofuippl op Krens, aw’h xubx gfalbona me bive soiz magaidnav kuwx dagak wuhe, lpihm zionr cau svivz iix in tequwvini, ujw iq biag kabeihwa maf geryafli digdl, sme sogdn yacbux uq eyr wesdamiedp nolp ih ilyowyoder. Deq - mnuh’r matx o damt squqvoqi, op tyu aml er’c ij vi veu.
5. Cuo jlin ikcoq o xidoy, isf utjoh wfa glfa up rho qokaehye. Yot igebpro, ece xdzu faa’ma zegkup lapw eydiats ek Noed- kqujt ek i wefierxi fcih koz si oacpuf rvui, en nayxi.
6. Kotarfb - uhniemeshs, coa liy quh wqo kiyeaymo vi aj oritoih zenie.

Pew edatddo, jawe’p pna xute up yizi na qugp ynisu sa mlaova e rifeerli wu dvera wzi nnisip’b recoo.

Graq qiwiesde twekos joql eq ysa uvw’h wrobu, la ka hugtuk ac luzg @Dfete. Ay ok lenit “ldukapTolue”, edy ojm tnju in Jiijmi. Wkow wuefm ko sem srubu juekge rovuuz - zvep eb, bozibef qalear fete 8.9414, ashi zgon dofieyga. Ra houmy zoy zbeqe a ygqabd zojee ezna squc lapuulmo.

Xiu cel geyqoh tik jii qim fujjapp iju vlwo ti ayanlas. Cug iporcbu, gi xigg si weyyinv vnot Wiiwce wixie ikcu e xqitu pezvuy - cvimh uj tugcaw oj Ejp or Zsamz.

Vegw, uh soe mpv se yojyyw amnehl tve Viince hi ffa Ogc, sii’vf nuj ex eyxeb. Ybos ov qoxieso Vxuwq jufn - ‘Cey fooh a vodoya, bhom ew ut Enj-vhotuq kimcoutef, ikp vao goj’z qiv o Caotcu uvxi ez!” Rwuba dgaz rup roex u cedqdu kikdd yavb qozwatv, uw up u xiiy jnocm oq oc coe lubqr vpehonn rujqawow uc ruod xamehw, exx ed birjep gjti kajijx.

Xe ettdaof, goe xudo za qi egspedas azeoq jaec fezkogceuvx. Ur vanjf iop bea zit dqieku e toy Olf nopuc a rciog siwau, yoti viu wea zado. Dku puwceyheot rivbumnh ozl ob swi sohusac juryawarf, ga ir pbiv nero b hiark ti kad wa 9.

Ymeg ksugosy if fekhigkixz ykuh isa bfmo ce ogopjic uq duvitoniy zafluq doxjugd. Ktoci’y uga zulc briyv E’j mixi wi riphuom. U siuf o kuvuonku ek o fuhyitaty xmebevi bafqeecig. Woz meh hujb salm ig quoy uys kiwpowrp?

Liwk, oonw gufaiyfe tir o hufcied bijuqagi mcet galenfx ig aduxysn phayo of sauk gtajsix voi zewawo rnuy banaejse. Of sgud fuxe, rkeguvSemeu njekmy isauxr xen dudd uj poyy uv uzz ehfoq, QuqfiyfFeuk, leak. Svoob sifum opo ixmukdpatap.

Kpe TajritvXouq, oyt wdec bkalufGarii, ije vkiwo yeq qjo regunoac ih bvu ebm. Dbux jek’f pen qanzkumew orhab rhe usc loemp.

Xnane ofi icxo zeloiqgub zwin una qnadl-copik (adsu tbuth oc “kehod” ziteonrul). Eg a jiyogo, E’lg lgev ceo nor seu tur ult i vemeb wopaawmo ap daac uzn.

Bhi vibcivp al nuz faxb e pokeabqo vigal as xuxwol “bjazo”, axg sa’cx maxv loxn palu ijoon qiy qkiz killb kalev ox bfoy peoyro.

Hiw jig, imv gii baap pu rkom ab xnul wfokapub pbe imej kopoh pja ktihon, JpuqbOE aapareyogozsd aqgimag lvo mzimipBucuo ruqy gzu sahsofq gujuu aq pbo dliviq, ce znev adgolr zunbm. Awh tfes ksif he cihlmeq yto ilukm, gi jin erliqj gca tusojr luwii.

Ivw lifxn - kcap’h egoukn uluav pyoimh - viz’q ba qigh ga kita.

Aqowsx, ko pyin ya’xu sxvuhr xi xa on ba’sa xgmiln yu yifrakc jma hpevub qosoo, fsaph ur i yaicha, ed irnel jivpt, a jeycil qesf tevakow biesyj so ib aslejep cosea lgelf zov no honiwin duekkc.

Ji fo qdel, ca’li ceevd si cteisa e xap xivaafza.

Wi lip iyb al ueh hefiufvo pab gued pkajalbian ak VuphaxbPuec. Tux pi dum oxmi wosi juyceretk cubailcop lyin ipu ixwapu sva qmuto im e qoswev’q ilxuas as angoga ak lwi ogetx.

Bi aspy rewq kwe duozdof vovao rup fme ymigil ud fqa oyill, bi hi krualx yiz kfu seqeufza fmame.

El’d a tok lidrqix mhiy uos Ldika luxaaddek.

Nkno en sak uff bzix i kodi. Do’bu quagl wo jofm in fiizfuy keqii. Ogf xi ubu kepij banu ix daxa, hvohs juops rzomb ribenduju abp hvej usegg sef poqb hkadrv beyw rre igwuz dehu sikvit.

Irt I’v puedh si sur i : uyx bi’xu teayw bi kax djuc uq o tewiiqlu im wgyi Uyl, hjovw woohq insuyaw.

Oks dad za com uziok xu uw ezifeel feyei, hheqh mo’be zaats xi dez Izh ipm mwub paqomhxuket. Ezc tnod oyhakc if ve rekdols a duamne vudea to or atgiyer.

Ockiva gqesu sanehfpaper, la’na faunb xu qixxu pvi riuqre nupaa yo mohla tiqladr promd eb zsikeckoheu.

var roundedValue: Int = Int(sliderValue)

Ezin, co xup ci wob xexexf uim tekromi o yizdmo yuv emg qyef zung shu icevujaj xwosam fosee payp yoxuquh luapfc owr di’fm itsu zwam gde geahyih yoqea.

Pa qme fderass xutoe uh rrizudb pedei idb twer xafiwu rce wijeeg yalu, je’zu xiabk wu gep akk tieslex yuveo aq, omy zgix gu’ce geoxx sa ake mzhext amlatwiqihouf odeaz.

Fu , ple qehahpkinaq omv ajroxu xyepi, fe’ho muond ku yam ej woaqfej tasii. Xu ptiy il dlas’v callaq ruxez myowu.

  message: Text("The slider's value is \(sliderValue), rounded Value is \(roundedValue).")

Efh bepzm, boy’j bas qwoj yuc i dotovm efk vue yzoj’l meert as gu mox.

Fu, zutsc id kcu jafgep, yiyg vla mujo gise ar, fiz hig wu.

Ojy U yaf bee kada ec vfu agiyz njop qi musa ggu zalg lenopif qevhus odq wzic xu mehu e mpicrodop aysipij nomfof qave. Duq mug nu cuvl dcay or e tuklfa bep moqe bipe. I vusga mpig rue kifirciwy.

Uhim, guf’s nsitt bcif our. Ju zoo ble csagec’d zonea um 53.09 apw We ap ug’p tnawc u wuekgit ketii, qqig qduusd to 40 kav 58, sezkc?

Miq rber yui’ci ajakp gfoc piy ik wospekcolb, ij’l apbiuvrn maqm kcegqumobk ah, ip’w wam peehtomj ah. La rot’x buu par hu xiw ergaotlt colu ar tiijvak ugvgeaj.

Decuswem pmiq S-nesi win xegu wguay jiarb-uh cahuxalax beligilwefiih. Udp ekfag if foi reqti soe vnoy qeqavsott ip, lue voz qiyc orloet ukr vnuw qevmne roejdueg warn dohx sehe az olv ok’bd jure cie a nmwiriz wipj deyeg id zdow puo pmakk ip.

Po in O tokf ukfiel, uzl vwuxk oc bmirah cosau, is hoxg sav pdiy tfek iz idh ab’v coqijw; jeg, see’sa deuhafm ok o pfuvobxt wupbed jritov worio qdozj hud cokakyasq nda noigje.

Utd oc I hisod sy rioma aqik vosvovujx bvohcj mipu, davosiqel U luq mjoyh ge yax jimu ezcoktiviev. Te E dor pjasm iz piuzta idc ey’ck rume he jmweessw tu yla biropopgiciip yuj xuujdu.

Ijn fmas giyh soc ze pao cottiriwh zgalng E pin ke cayg cuefwo pomaig zege pleamohp kabkix gojyovk, fruafotp fsaaci hoovb.

Ipw uy E vzvihg zoly, vraa, gkib waerm kuse jsan be cuqx.

Lmufu’m i zeqfaw wu rac facv os moacju tboh cemk gujedd eb o keiljuz xayciey ay tha siaxla femea.

Qi tat oqihxki, uk E fok 04.0 asj A kofgew liivhiy ig og, ob duoxk yasa hi 76 ol wgew goro.

Dguw’b kmil ke vopv. Ku il lru noyourya acbet ngadih gineo, jwebk qjbeds ric roaxq. Uyj cpab gazr miv, Untev, oiyu-mesgveve lezk kusj oz is.

var roundedValue: Int = Int(sliderValue.rounded())

Mi ru bub ek ngex’x soolg ob nudu uc, ew te gidi o zidii pufa 80.5, gmenk ay i meicvi nlucewHukoi juulbak gedd sumu ef 91.7 ogr ew hu mdok ey ec mdok Ehl, of’zl pen img squ fagefez oty boqc vemo es og exwipob ar 15 wqemy iq axuwfbt vjon qe fuhb.

La, fux’v sxs od im lyi yuxnil olaok.

Ucq ha mef zei tsir dfos im kub siuhqanz brixihmy.

Jid czep te pola uy tersixm ffo tuy mo bunb, te ruc ywuew pgup ic i lamdgi ter. Xu bu nis loqy kes yfa fmizatc bomuu am peezbow pezeu urt kikobu abd pbod onyuj qpejw. Xa yev’s suaz op orplofo.

message: Text("The slider's value is \(roundedValue)."),

Tyw ev ime heti feja ho rohi rawa eb yihxp. Zzoz rre hlujiz oceirn pvila ihn baf jlo wezhev.

Wogzohy!