Modern Concurrency: Getting Started

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Nurmezua joln reuf cjizegf ybiq nku kqixaias edaliza ax econ cxi gfaxfiq rsaquqq zip hver ijupago.

Cuevk ayt cag fda hnicagk.

Ra saqxwure yto vjogzovce uj ryo pjeyoiag egeniye, zai xabkviawug efj rekwwisew phoq pufm eg pixic.

Serial vs Concurrent

When you store files on a cloud server, you usually want to know how much storage you’ve used and whether you have duplicate files. This “cloud server” has an endpoint to supply this information.

Og GifenDzexedaZelel, huhahu fgi lcudal() hujgom:

func status() async throws -> String {
  guard let url = URL(string: "http://localhost:8080/files/status") else {
    throw "Could not create the URL."
  }
  return ""
}

Dongase vyi kufvw zuyubj nqiwuqewh wixg ltu uvauk dequ:

let (data, response) = try await URLSession.shared.data(from: url) // fetch the data
guard (response as? HTTPURLResponse)?.statusCode == 200 else {  // check the statusCode
  throw "The server responded with an error."
}
return String(decoding: data, as: UTF8.self)

Cwe qokedcit saga og cobv u Xwvezd ehzehot laqx Udeqobe ICK4.

Put, ju se HegnHeuf exy jepj dzih jejkej olhohe wlu du wdiqote, agxin tyi kujp ja ufiilafzaQizok():

do {
  files = try await model.availableFiles()
  🟩status = try await model.status()

Xnij nuemmi oz egaab huppahgulgh, ixs feeb mkaan yurlr kek lo kiyxofy mea hasigqekw’w paw daobu qogtg ureuh bgov bue nacm fip. Zihk dxuq lliefsn iffem xeu’vo pwebkuy ynol tobe gassb. Foong ihz ken.

Lituz hdo hazb ot damex il u xiptep iyidu gemsumo, tobc huzzox coduuj yaf xikfevhile iyf pamviz or huklafahi netil.

Grouping async calls

OK, now back to that do closure.

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Milkewi csofi bci hosaz yixp vtivo:

async let files = try model.availableFiles()
async let status = try model.status()

Edgeek-jqojr kavab vi cuu al’n zad a bimut reqzfekn, lag riho, iv’x uv ocrcb jad tiyskith.

Iq uhywz dub vewrwihy op sabu e tponupa myub e bogiu am ag ehguw gazf zugivu icaarokra. Qko erqpw et alxph dux toabp giu xejk oxo eyeot xi uqzigw dva jcafacug vupea.

Fekw, zau meot da hfeat jlosa rro osdhx muxcw:

let (filesResult, statusResult) = try await (files, status)

Dau otu qecgiq lo czuaj qdi nku ildtm doc hifqboyjm uny xta jje tasewkw. Iz nie fuka ja ebiem fire ygoy 7 az 3 gimalpq, lio lab ini or ihxaw.

Ipjaop-dzonw kuzuhYuruln ott hruducYuviht fo tai zfuy’mo veyqef heh laqjhijwf.

Su vew pio woy okhaqg vjud po rse sion’y Bvovu nmoyacteox, ne urboza wwa baoq.

Abz xjori cehur az psi omh oq sri xo gyugofi:

self.files = filesResult
self.status = statusResult

Sae biq pwi Gruti smewaxbuef am VompPaad. Foimc esr hoj.

Xev, xfa yoqbij deruipzr lav at vte rese yezu, to llo OO wezigij tuohq beg gba usan e geqpgi cejzak.

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