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Imposiso yokulayisha kwi-Zig

Imposiso yokulayisha kwi-Zig Olu hlahlelo lubanzi lwempazamo lunika uviwo oluneenkcukacha lwamacandelo ayo angundoqo kunye neziphumo ezibanzi. Imiba ePhambili yokuGxininisa Ingxoxo igxile koku: Iindlela eziphambili kunye neenkqubo Okwenyani-...

6 min read Via srcreigh.ca

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Imposiso yokuHyilwa kweeNtlawulo kwiZig: Indlela iZig ecinga ngayo kwakhona ngokuPhatha impazamo yeKhowudi yeeNkqubo eziKhuselekileyo

Impazamo yokuhlawulwa kwi-Zig ivumela abaphuhlisi ukuba baqhoboshele idatha yomxholo kumaxabiso eempazamo, ukusombulula ingxaki ekudala ikho yokuphulukana nolwazi loxilongo xa usasaza iimpazamo ngokufowuna. Ngokungafaniyo neekhowudi zemposiso zemveli okanye iinkqubo zobunzima obunzima, indlela yeZig ikunika ulungelelwaniso, umxholo wemposiso yokuqokelela ixesha ngaphandle kokuncama ukusebenza okanye ukufundeka.

Ziziphi iiMpawu eziHlawulwayo kwaye Kutheni iZig iZifuna?

Imodeli ye-Zig yokuphatha iimpazamo yakhiwe malunga ne-iimanyano zempazamo, uhlobo lolwakhiwo olunyanzela abafowuni ukuba bavume kwaye baphathe iimpazamo ngokucacileyo. Umanyano lwemposiso ludibanisa udidi lokubuyisela oluqhelekileyo kunye neseti yemposiso, ebhalwe njenge ErrorSet!ReturnType. Xa umsebenzi ungaphumeleli, ubuyisela ixabiso lemposiso kwiseti. Umceli mngeni ngokwembali ibikukuba iikhowudi zempazamo ezingenanto azinamxholo owongezelelweyo: uyazi intoni ayihambanga kakuhle, kodwa hayi aphi, kutheni, okanye ngeliphi igalelo elithile.

Impazamo yokulayisha idilesi kulo msantsa. Ngokudibanisa ulwazi olongezelelweyo ecaleni kwethegi yempazamo, abaphuhlisi banokusasaza uxilongo olunentsingiselo ngaphandle kokubhenela kwilizwe lehlabathi, ugcino lwendawo, okanye iparamitha ezingaphandle. Le ndlela yokusebenza igcina iZig's zero-cost abstraction philosophy ingaguquki ngenxa yokuba imithwalo inikwa kuphela kwaye ihlaliswa xa kukho impazamo ngenene, hayi kwindlela yempumelelo.

Njani i-Error Payloads xa ithelekiswa nokuphathwa kwempazamo kwezinye iilwimi?

Ukuqonda ukhetho loyilo lweZig kuya kucaca ngakumbi xa uthelekisa imodeli yempazamo kwezinye iindlela zenkqubo ye-ecosystem:

  • I-errno ye-C kunye neekhowudi zokubuyisela: Umxholo wempazamo ugcinwe kwi-variable variable, iyenza i-thread-engakhuselekanga ngaphandle kokuqeqeshwa ngokucophelela. Akukho kunyanzeliswa komqokeleli, ngoko ke iimpazamo azihoywa.
  • C++ ngaphandle: I-Exceptions ithwala imithwalo ecebileyo ngokwemvelo, kodwa yazisa ukuhamba kokulawula okufihliweyo, ukuthintela ukulungelelaniswa okuthile, kunye nokongeza ubukhulu bokubini ngaphezulu. Uninzi lwamaqela ophuhliso oluzinzisiweyo kunye nophuhliso lomdlalo luyawacima ngokupheleleyo.
  • Isiphumo seRust:Indlela yeRust sisihlobo esisondeleyo. Imposiso yesiko enums kunye nedatha ehambelanayo ifezekisa umphumo ofanayo, kodwa iiseti zempazamo zeZig zikhaphukhaphu ngakumbi kwaye zidibanisa nolwimi zama kunye ukubamba amagama angundoqo kwinqanaba le-syntactic.
  • Go's multi-return (ixabiso, impazamo): Hamba ikhuthaza iimpazamo zokusonga ngefmt.Errorf okanye iindidi ze-sentinel, kodwa umqokeleli akanyanzelisi ukuphathwa. Iimpazamo ngamaxabiso ojongano oluqhelekileyo ngaphandle koqwalaselo lokuqokelela ixesha.
  • Zig's error unions with payloads: I-Zig ithatha indawo ephakathi, inika ukuphathwa kwe-compiler-enforced, i-zero-indleko kwindlela yempumelelo, kunye nokukwazi ukuncamathisela umxholo ocwangcisiweyo ngaphandle kolwabiwo lwemfumba xa isetyenziswe ngedatha ye-stack-scoped.

Le spectrum iveza intsingiselo ecacileyo kuyilo lolwimi: ishishini liguqukela kulawulo oluchwetheziweyo, olunyanzelisiwe lokuphatha iimpazamo, kwaye iZig ityhalela phambili loo mda ngokwenza imithwalo ehlawulwayo ibe yinkxalabo ye-ergonomic yodidi lokuqala ngaphandle kokuthomalalisa iindleko zexesha lokusebenza.

Ingaba ukuphunyezwa kujongeka njani xa kusenziwa?

Kwikhowudi yeZig esebenzayo, ukulayishwa kwemposiso kubonakaliswa ngokwepateni apho imisebenzi ibuyisela ulwakhiwo okanye imanyano ephawulweyo esonga zombini ulwahlulo lwemposiso kunye nedatha eyongezelelweyo. Qwalasela isihluli sefayile esidinga ukuxela kungekuphela nje "ifomati engasebenziyo" kodwa i-byte offset kunye nophawu olungalindelekanga olufunyenweyo. Kunokuba ungene kwi-stderr okanye ukufihla iinkcukacha kumjelo osecaleni, umsebenzi ubuyisela ulwakhiwo lokuhlawula oluqulathe i-offset, ithokheni elindelekileyo iseti, kunye nezona bytes zifunyenwe.

I- zama igama elingundoqo lisasaza ezi mpazamo eziphuculweyo kwikhonkco lokufowuna ngokuzenzekelayo, kunye nomphathi wezinga eliphezulu, unokulinganisa ipateni kwithegi yephutha kwaye ukhuphe umthwalo wokuhlawula ukuloga, umboniso, okanye ukubuyisela ingqiqo. Oku kwenza ukuba iZig codebases zilungiswe ngokuphawulekayo kuba yonke impazamo iphethe umkhondo wayo wophando.

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IsiFundo esiPhambili: Eyona nzuzo inempembelelo yomthwalo wemposiso ayikuko ukusebenza ngexesha; yengqondo. Xa impazamo nganye iphethe umxholo wayo, abaphuhlisi bachitha ixesha elincinane bevelisa iintsilelo kunye nexesha elininzi lokuzilungisa. Umthwalo wemposiso ujike "into engahambanga kakuhle" ibe "le nto ithile ayihambanga kakuhle apha, ngala magalelo," ukuwisa umjikelo wokulungisa ukusuka kwiiyure ukuya kwimizuzu.

Ziziphi iimpembelelo zeHlabathi zangempela kwiiNkqubo zeMveliso?

Amaqela amkela iZig kwiziseko zophuhliso, ukusuka kwiinkonzo zothungelwano ukuya kwi-firmware egxilisiweyo, anike ingxelo ngophuculo olunokulinganiswa ngexesha lokusonjululwa (MTTR) xa iintlawulo zempazamo zisetyenziswa ngokucwangcisiweyo. Ipatheni ikhuthaza uqeqesho apho wonke umsebenzi onokuthi ungaphumeleli amaxwebhu njani usilela ngokungqongqo okufanayo njengekhontrakthi yempumelelo.

Kwimibutho elawula iinkqubo ezintsonkothileyo, oku kubonakalisa inyaniso ebanzi yokusebenza:umxholo wemposiso eyakhiwe ngamandla ophindaphinda ubunjineli obuthembekileyo. Nokuba ulanda ipakethi engalunganga ngesitaki sothungelwano okanye uxilonga uqwalaselo lokwahlulahlula ukusilela kumbhobho wokusasaza, umahluko phakathi komthwalo ongenanto kunye nekhowudi yempazamo elindelekileyo kunye nekhowudi yefayile elindelekileyo kunye nenombolo yokuhlawula ulungiso lwemizuzu emihlanu kunye nophando lweyure ezine.

Lo mgaqo udlulela ngaphaya kweelwimi zokuprograma. Nayiphi na inkqubo ekuncedayo ukuba ubambe, usasaze, kwaye wenze kumxholo omiselweyo xa izinto zingahambi kakuhle, ukusuka kwiintlawulo zempazamo kwikhowudi ukuya kwiideshibhodi zokusebenza kwizixhobo zoshishino, kunciphisa kakhulu iindleko zokungaphumeleli.

Imibuzo Ebuzwa Rhoqo

Ingaba iimposiso zokuhlawulwa kwimfumba yeZig zabiwe?

Akunjalo. I-Zig inika abaphuhlisi ulawulo kwisicwangciso solwabiwo. Umthwalo ungaphila kwi-stack ukuba ubomi babo buxhomekeke kumsebenzi wangoku okanye kwabelwa ngokucacileyo xa befuna ukuzingisa ukuwela imida yokufowuna. Oku bhetyebhetye kuthetha ukuba unqanda ulwabiwo lwemfumba olufihliweyo olunyanzeliswa ziinkqubo ezikhethekileyo kwi-C++ okanye kwiJava. Kwiindlela ezibaluleke kakhulu zokwenziwa komsebenzi, imithwalo eqokelelweyo yongeza ulwabiwo olungaphezulu kweqanda kwindlela yempazamo.

Ingaba intlawulo yempazamo idibana njani ne-Zig's comptime features?

Imodeli yomiliselo yexesha leZig ivumela iiseti zeemposiso kunye neentlobo zomthwalo onxulumeneyo ukuba ziqinisekiswe ngexesha lokuqokelela. Umqokeleli unokuqinisekisa ukuba yonke itegi yempazamo kwiseti inesibambi esihambelanayo kwaye iintlobo zomthwalo womvuzo zilungiswa ngokuchanekileyo kwindawo nganye yokufowuna. Oku kuphelisa lonke udidi lwexesha lezinto ezothusayo apho impazamo ibanjiweyo kodwa umthwalo wayo ungatolikwa okanye ungahoywa, umthombo oqhelekileyo wokungaphumeleli okuthe cwaka kwiinkqubo zempazamo ezichwetheziweyo.

Ngaba kufuneka ndisebenzise imithwalo yempazamo kuwo wonke umsebenzi onokusilela?

Sebenzisa umthwalo ohlawulayo xa imeko yemposiso inceda ngokunentsingiselo umnxebi ukuba afumane okanye alungise ingxaki. Kwimisebenzi elula apho impazamo iseti incinci kwaye iyazichaza, njengokungaphumeleli kolwabiwo, ithegi yempazamo engenanto yanele. Ukugcinwa kwentlawulo yemisebenzi apho indlela yokusilela ixhomekeke kwimeko yegalelo: ukwahlula, ukuqinisekiswa, i-I/O kunye neethagethi ezithile, okanye ukuphathwa kweprotocol. Ukusebenzisa izixhobo ezingento yanto yongeza ingxolo ngaphandle kokuphucula ukuguga.

Yakha iiNkqubo eziNgcono ngeZixhobo eziLungileyo

Nokuba ubhala iinkonzo zeZig ezinokomelela okanye ulawula imisebenzi entsonkothileyo yoshishino, impumelelo ixhomekeke ekubeni neenkqubo ezicwangcisiweyo eziveza ulwazi oluchanekileyo ngexesha elifanelekileyo. I-Mewayz izisa ifilosofi efanayo kulawulo lweshishini: Iimodyuli ezihlanganisiweyo ezingama-207 eziyilelwe ukunika iqela lakho umxholo olungelelanisiweyo kuwo wonke umsebenzi, ukusuka ekulandeleni iprojekthi ukuya kunxibelelwano lomxumi. Joyina i-138,000 yabasebenzisi abathathe indawo yoqikelelo lokusebenza ngokucaca. Qala isilingo sakho sasimahla kwi-app.mewayz.com kwaye ufumane i-OS yeshishini eyenzelwe amaqela angafuniyo ukubhabha ngobumfama.

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