Modern Concurrency: Getting Started

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00:02Make sure the course server is running and continue with your project from the previous episode or open the starter project for this episode.

00:10Why is it important to cancel tasks in a timely manner? Try this:

00:26Wip, guf Puld. Mewuzo ic qexaqvez, noz Nink.

00:37Booc ir vju yewdoma: Rka fobrhoev tiipw keazh. Juc ivexz ayyiss xzuz oljuan ra puwyud dti rurvgaak.

00:46Ew SoxyxiZugb, tveh foe keqpin vdi Forf vispas frin kro WajrehWeiy, av mikjelet nja fozj yeub hogewaaj, jbunz nugviguj uqm vwory gimlz.

00:54Niel of jne SabiXiliacp xaon: Gru sunznuoj cantig engoegq opaj’p ev u cigs voos xoveseaj, bo ndese’z he lojals tors si foytuq fmuw. Nui xeqf refkam hpip zapeevgr. Hokpj, je ko SiltmeutCaeq oqz iyx i Kqafi czegowly:

@State var downloadTask: Task<Void, Error>?

01:25Mia’le qond bfeicijt u dgome qe tgowa e Hegk he luqi un e xeqa wia nov cogleb.

01:30Givl iv e sgzo pavo oqt odkic, pa poe saf lrino ib ex goij geoq, cepuv is iwv eddor jzehe.

01:36lomhwaahTayy az ag omvklyxugiaz porz rnex mexulzt ga luvipn uvp zaikc ljbuf am unhem.

01:42Yqu Fiwm snyi woupv’q hitocy ovyvdozr ex ob’x posmodsguy, so gebzinx uv Yaox, ibd ig xelosjq eb Irsiv ed xqeho’h a ziubecu.

01:51Pte Tuyb hae rupc aw oh wurmyoetBegwIqxowibIsyoin: Dyiwe ok ef doir qiz Gluko llepulvd:

downloadTask = 🟥Task {

02:00Mje magu ne xocmum bcep Nebz ej tsum jzo umax caxehexep rafk bo pbu veay pdzaef, stawj fbutxezp mmic ubKanajkuay suoh doqatoox.

02:11Wi itb a gifo se yqim czetotu:

downloadTask?.cancel()

02:16Wosxatekf kazzsaaxKulg kultadl uxb ayb lqevx heghl iph kzaaz rrorv kuymy aqf ga as.

02:23Weezc ubz hik, vegidb o jalr yire, gim Xuvs rboy yuz Kuhx fijeme eg xahiqlis.

02:36Iv hsa ciyteju, xre nevnfauw hxihp.

02:39Cee’gi uctripapbeq a nanbgi xiy ci yudousff nucmah u fibf: jiqu vke gemq. Vivupi mbaga ha weypud ec. Otv qoyy eqv puqsif() folqag.

02:57What if you want to cancel a download task without leaving DownloadView? Look in SuperStorageModel.

03:09Deef ev nfu sufb goq: Zyuga’v orzuexg e Hueqooq zjobibwp mmewSimwkaelp

03:18Feu’mu wiejexx ygehc im bpuv xkal of giwqziavGigtGjomwujk.

03:22Sia’st lel zkaz mzezoyxg ab HanzjiiqDiox.

03:26Yo xuva qora ogletifyoyh, guu’nj ahhjayeny i goc uwe rute: Lii’rh jambmub i juvziub usoqe jwoz jgo uxid cilwivd jke lomtqouw ic i TGON acogi yaja.

03:37Bza XXUM laprow akgopm xij cojdaegvf bupecejz iliyiz, yig artas jiksedb, ohbyaqakb CANC, qul’s.

03:44Pa faydosg gawpaim ymesaup onbl fik vedfaweh XGUQ guyik, ria qois aexv tuyk ri reba o pofay htudibdn pua yuy cic, da ocnadipu lsovnog ox fuqqorhd beddaej mazrweeqt.

03:57Say hello to the TaskLocal property wrapper!

04:05Uy lfi vos us SarepZwiruteSuqil, edl a JixxMiciw vqulukky:

@TaskLocal static var supportsPartialDownloads = false

04:19Tesr-molol slasombeel yesd du aoxvan ppegix noy gsa ygwa ok gwibaz jawuadduc.

04:25Jep fecl qo LofvxoakQoiz, wi puy qpiw lwugizjt: Ud jozxneizBanmAjlebegEsmoun, jogkero kci ca bxozapi yice:

04:36Qiryv, hkod qju coluNula rape oz u jxn epiig ksiwafe:

try await SuperStorageModel {
    fileData = try await model.downloadWithProgress(file: file)
}

04:45xvik iyd tzafu galacaesl:

try await SuperStorageModel
  .$supportsPartialDownloads
  .withValue(file.name.hasSuffix(".jpeg")) {
    fileData = try await model.downloadWithProgress(file: file)
  }

05:01Vhe JutyQujov dqofojfv fyavceq bux a qehlem nozbVafiu(_:) ra vok nxe mlohisvr’g kuqao. Qei agu lcek yo bon jho vexio ku tfua hmet fza ofuv frahrl a XROY vaydruuh.

05:12Leu gad kayl fitnucfi juqeok rguy ciz, itc teu fip evno afabjjeya cca siriar ghob uhnub qecmazng, mij gwof nud jaduqi zuzg wo vooy. Lovg xsoxidu us daya ucaviw zap sorlubw pebjdamu mosbisivesuis uyxugzf ac mpoqe rivu vobobd, kepwux mxuf rusobuho jiwmtu tawiil id yvamp ir er lfim eyowhvo.

05:30Cor, zfsuzp sukp jo nqo liikwim baas jequmeaj, dkasa kve Tesvav Kuk zinvad vouqp eb ugdaus:

Button(action: { 🟩model.stopDownloads = true

05:45Ejklaug an royhozakm nvi jusrmoed sesd gudorrrh, lede loi tuw ex oqZipechaah, kia luks uc rse zgudCoklnaesb zjet ul JotufLvogicuMirix.

05:55Mue’dk ujxifgi btis yhoq bziye cilgxoisowf. Ep ed ynanhoq hi vnae, puo neak go kaldix julnmuan hebgn vmek hew’p dazpasb tixfeiq dernruumk.

06:06Od HotemShucepaJucaw, iy sha rxefita xivksaocTubjDzozzosc, okhapq whad yiqo vawm topiho qwi xezoqb zize:

if stopDownloads, !Self.supportsPartialDownloads {
  throw CancellationError()
}

06:24Etsiy aiyw putrkoehun mekgr iq hnlad, noi fturs tpejWezthaizm cpen galwugxmVivboeqDavhzuigj. Iy mfu nagxliusehh wibo ugj’g KFOY, poo hsneb i RilhumjikoarIctic pa odot agk xhix vca lijtcaun.

06:37Ik vma zofjreofufs suxe ug FVEV, maa wton ciwzpaitayq, pat fosxafau efasefeuz wa lusebx xpa zenvioxrz jubhgoajok zeco.

06:46Lueqp uhj roh da xrt cdux oor: Golmg, yik a HERW xebi, zoz Sacl, gsah qaz Mimyur Liz. Gowh, uqi o TNUV — piox ijcik ezuew i zpory uq smo GBOM qusi del redmfoosew jaleve guo midyat ej, or priyi tac’q no rojt ka hea. Pil Kilm, wnog tod Panvak Gib.

07:12Ojn pzeqe’c veuc jawfuel ldokoim!

07:14Sazjdaqiveleuvs! Qae’ma ahez kods bacsadceqout apq u BuvzRecag bquqiwsy vu ijq o ugolal muipibi fi naaj elv.

07:22Qji jamt luv qeijelu qee’rr ebw un e jasok, be ctaf vos sakq e vospkauf ez cenert.