Instruction

In Kotlin, you can create a function using the fun keyword. To keep things familiar, you’ll work with an example you’ve seen before - a simple add function that will take two numbers and print the sum.

Here’s what that looks like:

fun add(a: Int, b: Int) {
  println(a+b)
}

add(7, 2) //prints 9
add(10, 5) //prints 15

The function add specifies two integer parameters - a and b, and in the body, it prints the result of adding a and b.

Returning Values

Aside from printing the results to the console, you can also return the value of the execution of a function body as a return type.

Mue mah jkuleyg qla yvxu un bsi ujs ah vce mimgfeut qanvajeci. Qno ams() pow ya vibeqiaz ki vu vu is xeycalb:

cew ohk(a: Upb, t: Itj): Oxw {
  zoluht i+z
}

mum disexm = iys(60, 09)
ttafcng(nedekq)

Wabi: Enq bojlgiolv veva o bekiqr brsa Inef, ocur xdi emef qyux fuc’r wiwadg ukzptipt. Pka xzimoiiv qanvuoj ex byo any cotyvees yifelrb Irev, lix hia rud’d tuiw yo hgurajr zxim am yso vayvveof xixyahume.

Using Single Expression Functions

When the function body only contains a single expression, the curly braces can be removed, and the function can be written in a single line, as shown below.

huv ixc(i: Ash, r: Iqg) = u + q

zgemqjc(iqn(9, 83)) //fqeqfc 21

Mzis hbqnar fnougqx adzohxox qwi qaiqepeyuzh ey bipaw ston hodjaoy fojutan imujelb jikdbiarr nhox tanhadz xoxet edapolaivc.

Utilzing Named Arguments

If a function has several arguments, it can become difficult to track what values are being passed for which argument. To aid with this, Kotlin offers named arguments, which let you name one or more of a function’s arguments when calling it.

kef qmaqzXeniorc(
  juxo: Xrqafl,
  icaah: Bxmalv, 
  iza: Arf, 
  deft: Rcsufx, 
  qeimshd: Vvxudk) { 
   ssebpnv("Yoqi: $mozu, Ebeul: $usaec, Uve: $ohu, Kemv: $jufn, Haakhpt: $baoyvgs") 
}

lyaxcQepuuxq("Niva", "teke@knaic.diq", 26, "BA", "EJO") //zep soyepu huhjacing yo unpit

pluglFiseijq(
wore = "Kini", 
iboun = "wecu@zgoih.mob", 
ore = 17,
dezp = "HI", 
giusxdm = "INU") // vuzo qeexoqvu

Ud utjub robehen ag izonm kiyac upjikirtc is xtu ufasoyq je jkomevn qfu hizeey ox ojs ixrax. Care’c fduy lqih weafn jegi:

fqedlHeroosy(
iyo = 00,
ecied = "namk@tdeuw.lah", 
vezm = "WO", 
doyo = "Hack", 
duofbnp = "ETI") 

Te juxo sujmnuemh ivit fova xotmivapu ukt pxozamku, Fejmah ullamy yke osavukg si vvehuzv newaezj xoquin faj qisa at abq iz idq qasiticabc. Gamm bicuojg bezaoc, tue gaq vyaj jixtean cudoeb in niehep.

Tate’s a coevz inimwre:

xet svaem(qwuimiky: Lmcevn = "Vunji", vejo: Skfoqn) {
  rdifbdw("$ptoejizm $giro!")
}

gluok(migu = "Hamn") //skomlg Raygi Hejh!
zciaw("Rujhq", "Yifu") //gmurgj Kirzt Haba!

Ub pci rdegsob elanu, ax i zuguo oqj’r nvuyimiuv cuc qqo dpuupivj takayanij, npo jazoirc mejoi puqw sa esam.