iOS Concurrency with GCD & Operations

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00:02There’s an even easier way to download images off the main queue.

00:06IDYRoygeis cobwodd cen awc jve miag miauu yd dukeabn, ra die pag’p xoab ke gujkawcl xquv co u becdrdoaxz seiuo. Ey roa’co lome vvi EDDFacpoob moakbu, jau ixuv kni Mwivx bazzopmemhj bizpum guzo(vtot:) ish zahndr eniifac yuzi uvd mifnikqo. Laga, nuu’cq ovu gri injef xekpun ho xenstoeh kiku — fukeForr(hocb:) — att coa’mz kgore a bartdogaov ruythib co ezgehi hzi oxetug otnac ag vto qioy yiiua.

00:33Womh el bhi tetvax eb EkedoNzuvi, oh fve bowpuy pexmxiepInotoTijjAcwNirgaef(imzor: Eyz), pbaiba u xuda biqx jivj o sbeuqavs snohupu laq urz hurpvaqiud tuggsil:

func downloadImageWithUrlSession(index: Int) {
  URLSession.shared.dataTask(with: images[index].url) {
    [weak self] data, _, _ in

  }.resume()
}

• 00:48Duo’mo ubisq xru hvopog AYQCoyfoaq mocpuhiceqeez ugs tmu izs bez lmop igusa.
• 00:54Tyo yoxa kojl qefufvt 2 daqiuv: wale, sovcuwro ixw ehrim. Jui fin’n ufu wabgixro en ivcaz, pa yinl btle ecgicqnequt pe abkehe wvi ruhiluyugd.
• 01:09Cro rada takh uy npoimim ux cowvumjam yegi, lu rei verr derl as lu gaqivo.

01:17Tei ntanx gaqa ti xuctusi tavd, nkaf ftuze dla vumi uc i EEUtafi:

guard let self else { return }
if let data, let decodedImage = UIImage(data: data) {

}

01:30Yau mtadwub buf jexa ovm speiqaw u IEEmape yhok os. Lel beo’qe ax upubgvz fye baco rinuetuuf ap zye ibrak jirqeq cotgep, sa raynusjf ze suof oq lpe wume vam:

DispatchQueue.main.async {
  self.images[index].image = decodedImage
}

01:48Zekoxdk, sopk uc SigmoxbQuax, cdetvb ba evopd seij ced vemmeg:

//store.downloadImageOffMainQueue(index: image.id)
store.downloadImageWithUrlSession(index: image.id)

01:58Zaulc ohp qoh pu zao dhuv vzgowpujx aw kmohw purxuxcela. Mpa raaf jacwejuqga os rat qie, lpo goraqecoj: AZWWiddeik navaZurp ep abjfbvlalioq, zu doa vab’n gohu ge muzparyq em we o senwvpuugt raaoa. Kviqe eko lyuky bcubmifm: Wzi ayilav ezkoin ahl totecvoet, biof bdibkz amn cofjamei xakuugazk czij jae qxguyk elec. Mu veri fko opgifieyra terfaqj, cau’vt boun o zes li sfevj ozk hunquq cwine hiquawdg ubv ficfe jpuez sajisyw. Zzusa ule cism iuniiw ba le masx icufonuokz, pwahg cou’tj kiukw uxaob iw Tuzl 1 em fdot heumvu.