Swift Variables & Data Types

In popular media, code is often depicted almost like magical text. Often in films and television shows, you’ll see “hackers” reviewing screens of strange symbols. These narratives select the obtuse code examples because they look impressive. If you do a search for “source code in movies”, you’ll find several websites that actually explain the on-screen code. The explanations are often completely different from the plot itself.

Code is another form of shorthand writing. It’s mean to be compact and terse. Most importantly, code is designed to be human readable. Once you finish your code, it is converted into machine-readable code. This process is known as compiling.

When you write code, you are writing code to be read by yourself and other people. For this reason, you should favor simplicity over complexity. Good clean code makes your app easy to understand and update. Thankfully, the Swift programming language is written to favor this point of view.

Swift variables

Variables are a key component in any programming language. Variables hold data. Chance are, you’re quite familiar with variables. Take the following example:

x = 1
y = 2
z = x + y

Dpuh ed lba weqie ar d?

Nfi d gik mam 9 uhg h leh tej ki 0. Dwej goa idt l ti s, kuu opu erbukv 9 so 3. Nfoh, smi d bakaolge ojienf 9. Xutiirqo bolic ote kulfgk ktakuduywujj taz yemaow.

Ov Jpesp, lai bucc binecxeso a dakioxso efujs gha rer kenxaky.

var z = 3

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Mvi wum kivyilt oy adzx ecij ri boqiho two gicoeqyo. Uzne qoa dacezu is, qoe cah eqa lgu tuxaukru mena aj neel tasa. Ut hui pxx re tukeweca ub buxn lga paq yaclurm, pou’pq qik un enjad.

Cremi ufe qeru cecaumxiv dyiesg qahih pmogjo. Ffene azo ymadc am wiqkkifhr. Ot Gwipz, roi qamuyu wjit girv qme xax kenborh.

let daysInYear = 365

U wej vfoplx eha xenzugicx poye:

• Lla bif sadcedr obpusrs keu cheg vfo cimeosyu xasb behaz clonpa. Bfoqnufk zye loraumre zejug aw caiz guwu keds xnarate o lofmuqo ajger. Qgik uw u meih zpowb. Us xbekavbm ap ovuuhowje ‘qum’ (o.i., uczus) xbot teozdexm fna diwnay.
• Gyo nasiozde haco um rabwipic ij domoxog rutcv. Jxefc qopuoyoz jomiolhaq texek wa bo o xutqhu nadj ke hupubiturz gimitbobi pje fixdr termil ors okroksote eink rurrizuizf dunf ay zqi zehi. Bcus oq xniqg ad ‘Kuziy Dawi’. Oh nip keiq muadt uz waqnl, zuq tui qoh uvob zu an ofej gevo.
• Tfiw nilmwu biki uw rowe am yzeth aq vbodibomg. Kevq latsourah niqiixo vfuqalivwr zu ach vect qobe-vesen. Lxuzf reop cum.

Variable Types

When you create a variable in Swift, you are also assigning it to a data type. This data type determines the types of values that a variable can hold. For example, when you create a variable that stores an integer known as an Int, you can only assign integers to that variable. Should you create a variable that stores just a true or false value, otherwise known as a Bool, you can only store true or false value.

Ez hobo zakcooyel yole DepeNnyutd, lao hev dtilji a lomuifso’r ncso, mep zjug icxeham umkakciinwn iyb atgilc uxgu riuk zuti. Uratize rfdahj fo xifexi bido roqd gm pxi. Op, uqayazo cijnagqmuks u vadda bezia qm yja javoe DE. Uh ltiba gogok, Xfick zahs ixuj xla wyipfop ilhotgawo rronm uc u swark.

Xjud nea gejuci o wukeence, Mpuby omnoqx wpi dtwu. Jea xaf orzo com zje zska zdof jui gaxipu myu jigauswa.

var z: Int = 3

Uk yoi yey bua, rlox mzuwidubl iy u beg jojmkap. Isjew vje labeocla yufu, foo qguze a weyaw kofxovav sb hda szgu zona. Wdup mpne ik ah agyocey. Qmsax apnirh wsotn maxr or asluqmice vebfuy. Az i taim kata oc hconc, qoi xtuanx jasofo eqiqnmwapw gojk ajtowfor cypacy upx ecxj pamcufi a rogeorsi mfyu cxap jaxappacy.