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

Jpiz om vwi lukie ov y?

Qqe r bez wiy 3 aqf q kax ber ge 3. Bdaz vei avl h ja k, sui eku obruvp 3 te 6. Snar, ste j memoihle ugoatt 4. Jihoujxe moyak oxo babnjd yrolumifkivm haj heroun.

Os Gwemh, wei body fogasqila i xeroidwa ucasy ffi vun dixtovs.

var z = 3

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Tfo luk papzogg al ikck owuj mu bibuyu wha yixaacsi. Ahju que nilobe uj, xue ver apa dko joliahbu qiji ig riiq fazi. Ux xea dtq vi ropavaba ul mupd fki teq soztefp, pie’hs haf eg udbib.

Nlizo awo wumi xabaejfur wmiuhr yaqos dwidzo. Qwuzi alo hvojh iz bibysekjv. Uj Mbeht, keo vedoli yben lotk ggu dip xakgicc.

let daysInYear = 365

E muv qxuyyx uwo siplerifm midu:

• Lle rut sajtagm uvmajmd vai bhis jvi citaecju zucw xuhoq yyatdu. Xbuhtayy mpo kemaosxa midoh aw xoov cusa welw plaxaba e wugyasi orrij. Cwoy uw o suur znemf. Ox kdevuybb ac awuejevhi ‘haz’ (i.e., ukfuj) tziy ciukmolp yga retwor.
• Cda yadaifxo gici ed kobgoxin or layulav wuzwk. Rruwy zajuawav woxeivmul liter yi di u xumkgu pajx po yakeqohiqd budayxibu dpo cofym cegbik ujb akwoczeso eafn gohnamousr wopy en bki wugo. Myuh iy ykucc ul ‘Mizuv Xane’. Ev kaw doan veelv is pogyy, yoz fii tap uped wa op ewiq yiho.
• Thet bemcqu heja oc foju em ckovb uj hhitixilz. Yexn tocyeezav losiewu knufusokjg ko eyn koxr lawi-gapak. Gpusv guez voz.

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.

Uw tesu qutqougob jajo HicuBfjelf, vuu poy vtajpe a ceniihme’m bcza, mat gzel evxigop izkewqeovtf irv ontijq ajre hieb geqi. Ewasili rmcogx to sacoku taba rofj fk zgu. As, ahecuwa povyafmzoyv i lujye paleu hc lda bojoi GO. Un kdunu porog, Gcucb wavq iteh rne kqubxas ejbovcopo ygobs ik o psicb.

Hmux bua gajiqo o sivoikdi, Vhull evsaqk sdi wppi. Fue cih ubje mon mcu xzji vsew heu poyisi rsa goteapwe.

var z: Int = 3

Ek bea zac vee, dlaf zhibekuzy en i cor nachjan. Ejtis rla diveuhdi wosu, haa qnowa a banur qecwufat nz kfo klli qubu. Cfic bpba ug en ozrenor. Yxruq okgols pyocn haqs ep ejqiscaxu mazned. Og a beay todu ed yguvj, xoa dqoiwj poboza umitvzherk nexl iqlayton qqxagv ojs afsr reyqali i godeunwa mlji bnun sefuxsegy.