Qhov Tseem Ceeb Qhov txawv - Lub Hom Phiaj C vs Swift
Objective C thiab Swift yog cov lus programming uas tau siv dav rau IOS thiab Mac daim ntawv thov kev txhim kho. Lub Hom Phiaj C yog super-txheej C lus nrog cov khoom-orientation thiab lwm yam tshiab. Swift yog ib hom lus tshiab tsim los ntawm Apple. Qhov sib txawv tseem ceeb ntawm Lub Hom Phiaj C thiab Swift yog tias, Lub Hom Phiaj C yog hom lus programming dav dav uas ntxiv cov lus sib tham me me rau C programming lus thaum Swift yog hom lus programming dav dav tsim los ntawm Apple nrog cov qauv kev nyab xeeb uas tuaj yeem siv los ua lwm txoj hauv kev rau Lub Hom Phiaj CSwift tuaj yeem siv los ua lwm txoj hauv kev rau Lub Hom Phiaj C. Swift muab kev tswj hwm kev nco zoo, hom kev cuam tshuam thiab ntau yam. Zuag qhia tag nrho, Swift txhim kho cov lej nyeem tau thiab khaws cia.
Lub Hom Phiaj C yog dab tsi?
Cov lus C programming tau qhia nyob ib puag ncig xyoo 1970. Raws li C yog ib hom lus programming, nws yuav tsum muaj cov khoom siv hom lus C. Lub Hom Phiaj C yog superset ntawm C lus nrog Smalltalk style. Lub Hom Phiaj C yog ib qho kev xav, hauv chav kawm, hom lus-oriented programming. Nws txhawb nqa cov hom phiaj kev taw qhia cov ntsiab lus uas yog qhov qub txeeg qub teg, encapsulation, polymorphism thiab lwm yam. Lub Hom Phiaj C yog raws li hom lus C. Txhua qhov kev pab cuam C siv tau kuj tseem siv tau hauv Lub Hom Phiaj C.
Lub Hom Phiaj C yog cov txheej txheem loj ntawm C. Tsis tas li cov ntsiab lus C, nws muaj cov ntsiab lus xws li cov chav kawm, khoom siv, cov khoom, kev xa xov thiab cov txheej txheem. Cov txheej txheem tshaj tawm txoj hauv kev uas yuav tsum tau siv rau qee qhov xwm txheej. Hauv Lub Hom Phiaj C, yog tias tus programmer xav tshawb xyuas qhov tseem ceeb hauv cov chav kawm, lawv tuaj yeem siv qhov kev soj ntsuam tus nqi tseem ceeb lossis sau lawv tus kheej cov txheej txheem. Rau kev pib hu ua "alloc" thiab "init" yog siv. Txhawm rau qhia lub compiler, cov yam ntxwv tshiab dua li cov syntax tsis tu ncua, muaj @ cov cim. Qee qhov piv txwv yog @interface, @implementation, @property, @protocol. Muaj cov ntaub ntawv txuas ntxiv xws li NSArray, NSSet, NSDictionary. Muaj ntau cov lus NS tuaj yeem pom hauv Lub Hom Phiaj C. Piv txwv li, NSLog txoj kev siv los luam cov cav.
Swift yog dab tsi?
Qee tus programmers pom ua haujlwm nrog Objective C nyuaj. Yog li ntawd, Apple qhia Swift lus. Nws yog tsuas yog siv rau IOS thiab Mac daim ntawv thov kev loj hlob. Nws yog hom lus programming niaj hnub nrog cov qauv kev ua haujlwm zoo. Nws muaj ntau hom lus uas txhawb nqa cov phiaj xwm taw qhia thiab kev ua haujlwm ua haujlwm.
Swift muaj qee hom ntaub ntawv. Cov ntaub ntawv siv feem ntau yog Int, Float, Ob, Bool, String, Cim, Xaiv, Tuples. Cov ntaub ntawv xaiv tau los tuav tus nqi lossis tsis tau. Tuples tuaj yeem khaws ntau tus nqi raws li ib qho nqi. Swift muaj Cov Teeb, Arrays, Phau ntawv txhais lus ib yam nkaus. Swift muab hom kev nyab xeeb thaum sau cov lej. Yog tias tus programmer tshaj tawm qhov sib txawv raws li txoj hlua (piv txwv li var str="nyob zoo"), ces nws tsis tuaj yeem hloov qhov ntawd mus rau tus lej li str=10. Swift muab qhov sib txawv ntawm qhov pib, tshuaj xyuas cov array ciam teb thiab qhov ntsuas ntsuas, kuaj xyuas cov lej ntau dhau. Muaj kaw hauv Swift. Lawv siv los ntes thiab khaws cia qhov tsis tu ncua thiab cov ntaub ntawv sib txawv uas tau teev tseg hauv cov haujlwm. Hauv Swift, kev ua haujlwm yog thawj chav kawm khoom. Kev ua haujlwm tuaj yeem xa rov qab los ntawm lwm cov haujlwm.
Hauv Swift, tsis tas yuav siv cov ntaub ntawv header zoo li hauv Lub Hom Phiaj C. Swift muab cov npe ntawm ntau hom lus niaj hnub no. Nws pab cais cov code rau hauv namespaces, yog li nws yooj yim los npaj cov cai. Swift tau txais kev hloov tshiab tsis tu ncua los ua kom cov ntawv thov muaj zog thiab ua haujlwm tau zoo. Ib qho nrov version yog Swift 4. Nws yog ib hom lus siv rau cov neeg siv los tsim cov ntawv siv tau zoo.
Dab tsi yog qhov zoo sib xws ntawm Lub Hom Phiaj C thiab Swift?
- Ob hom lus siv rau kev txhim kho Mac thiab IOS.
- Ob leeg yog cov lus hais txog qhov tseem ceeb.
- Ob leeg yog cov lus sau ua ke.
- Ob leeg txhawb nqa cov phiaj xwm taw qhia.
- Whitespaces txhim kho cov lej nyeem tau. Lub compiler tsis quav ntsej lawv.
Qhov txawv ntawm Lub Hom Phiaj C thiab Swift yog dab tsi?
Objective C vs Swift |
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| Objective C yog hom lus programming dav dav uas ntxiv Smalltalk style kev xa mus rau C programming lus. | Swift yog hom lus programming dav dav uas tau tsim los ntawm Apple Inc thiab muaj cov qauv kev ua haujlwm nyab xeeb. |
| Paradigm | |
| Objective C txhawb kev xav txog, hauv chav kawm, thiab cov qauv coj los qhia. | Swift txhawb nqa Object-oriented thiab functional paradigms. |
| Siv Semicolon | |
| Lub semicolon yuav tsum nyob rau qhov kawg ntawm nqe lus hauv Lub Hom Phiaj C. | Lub semicolon tsuas yog yuav tsum yog ob nqe lus nyob hauv tib kab. |
| Variable Declaration | |
| Hauv Lub Hom Phiaj C, hom yuav tsum tau tshaj tawm meej. | Types yog inferred hauv Swift. Lub compiler tuaj yeem pom cov ntaub ntawv hom. |
| Lub ntsiab nta | |
| Objective C muaj cov chav kawm, khoom siv, kev xa xov, kev cai thiab lwm yam. | Swift muaj cov yam ntxwv xws li kaw, generics, namespaces thiab lwm yam. |
| Header Files | |
| Muaj cov ntaub ntawv header hauv Objective C. | Tsis xav tau cov ntaub ntawv header hauv C. |
| Collections | |
| Siv NS arrays, NS phau ntawv txhais lus hauv Objective C. | Cov khoom sau tau zoo heev siv cov generics hauv Swift. |
| String Manipulation | |
| String manipulation hauv Objective C yog qhov nyuaj. Nws siv hom specifiers thiab lwm yam. | Swift muab txoj hlua yooj yim manipulation functions. |
| Switch | |
| Lub Hom Phiaj C tuaj yeem zam cov lus tsis txaus siab los ntsuas cov ntaub ntawv tom ntej. | Kev siv nrawm dhau los ntsuas cov lus hais tom ntej. |
| Code Readability | |
| Objective C code nyuaj nyeem dua Swift code. | Swift code yooj yim nyeem dua Lub Hom Phiaj C. Cov lej yog huv thiab tswj tau ntau dua li Lub Hom Phiaj C code. |
| Lub Sijhawm Ua Haujlwm | |
| Hauv Lub Hom Phiaj C, lub sijhawm ua tiav siab dua vim tias cov lej ua tiav tau tsim thaum twg qhov hloov pauv mus rau tus lej. | Nyob hauv Swift, cov ntaub ntawv tsis hloov pauv tsis tau muab tso ua ke dua. Yog li ntawd, lub sijhawm ua haujlwm raug txo. |
| Code Maintainability | |
| Objective C cov kev pab cuam nyuaj rau tswj. | Swift cov kev pab cuam yooj yim rau kev tswj. |
Summary – Objective C vs Swift
Kab lus no tau tham txog qhov sib txawv ntawm ob hom lus programming Lub Hom Phiaj C thiab Swift. Qhov txawv ntawm Lub Hom Phiaj C thiab Swift yog Lub Hom Phiaj C yog hom lus programming dav dav uas ntxiv Smalltalk style messaging rau C programming lus thiab Swift yog lub hom phiaj dav dav tsim los ntawm Apple nrog cov qauv kev ua haujlwm zoo. Qhov no yog lwm hom lus rau Lub Hom Phiaj C. Swift tshem tawm lub sijhawm siv cov yam ntxwv ntawm Lub Hom Phiaj C. Swift txo cov lej ntev, thiab cov syntax yooj yim dua li Lub Hom Phiaj C. Nws yog qhov tsim nyog los sau cov cai huv huv zoo dua li hauv Lub Hom Phiaj C.
Download the PDF Version of Objective C vs Swift
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv Ntawm Lub Hom Phiaj C thiab Swift
