When kotlin

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

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