Try It Yourself - SyntaxStudy Editor

HTML / CSS / JS

data class Point(val x: Int, val y: Int)

fun main() {
    // Destructuring a data class
    val (x, y) = Point(3, 7)
    println("x=$x  y=$y")

// Destructuring a map entry
    val scores = mapOf("Alice" to 95, "Bob" to 87)
    for ((name, score) in scores) {
        println("$name scored $score")
    }

// Pair and Triple
    val (first, second) = Pair("Kotlin", 2011)
    println("$first launched in $second")

// Closed range (inclusive on both ends)
    val range = 1..10
    println(5 in range)          // true
    println(11 in range)         // false

// Half-open range
    for (i in 0 until 5) print("$i ")   // 0 1 2 3 4
    println()

// Step and downTo
    for (i in 10 downTo 1 step 2) print("$i ")  // 10 8 6 4 2
    println()

// Char range
    for (ch in 'a'..'e') print(ch)   // abcde
    println()

// Range in when
    val age = 20
    val category = when (age) {
        in 0..12   -> "Child"
        in 13..17  -> "Teen"
        in 18..64  -> "Adult"
        else       -> "Senior"
    }
    println(category)   // Adult
}