Kotlin when

val x = 3
when(x) {
    3 -> println("yes")
    8 -> println("no")
    else -> println("maybe")
}
// when can also be used as an expression!
val y = when(x) {
    3 -> "yes"
    8 -> "no"
    else -> "maybe"
}
println(y) // "yes"

Source: kotlinlang.org

Kotlin when

fun numberTypeName(x: Number) = when(x) {
 0 -> "Zero" // Equality check
 in 1..4 -> "Four or less" // Range check
 5, 6, 7 -> "Five to seven" // Multiple values
 is Byte -> "Byte" // Type check
 else -> "Some number"
}

Kotlin when

fun signAsString(x: Int)= when {
 x < 0 -> "Negative"
 x == 0 -> "Zero"
 else -> "Positive"
}

When kotlin

var greeting : String ? = null
fun main(){
	when(greeting){
		null -> println("Hi")
        else -> println(greeting)
        }
   }

When kotlin

#include<bits/stdc++.h>
using namespace std;
int main()
{
  cout<<"HEllo";
}

-1

Similar codes

0 vote267 views1 answer
Kotlin indices
Kotlin
3 votes231 views1 answer
Android custom AlertDialog theme
Kotlin
1 vote249 views1 answer
Kotlin optional callback
Kotlin
0 vote241 views1 answer
Object vs companion object kotlin
Kotlin
0 vote227 views1 answer
Kotlin filterisinstance
Kotlin
0 vote258 views1 answer
Kotlin constante
Kotlin
2 votes244 views1 answer
String builder kotlin
Kotlin
0 vote224 views1 answer
Var and val in kotlin
Kotlin
6 votes248 views2 answers
Kotlin thread
Kotlin
4 votes257 views1 answer
Logging in java
Kotlin