kotlin for code example
Example 1: kotlin for
for (i in 1..5) print(i) // "12345"
for (i in 5 downTo 1) print(i) // "54321"
for (i in 0 until 5) { // "01234"
println(i)
}
for(i in 0 until list.size()){
println(i)
}
Example 2: for loop kotlin
val array = arrayOf(1, 3, 9)
for (item in array) {
//loops items
}
for (index in 0..array.size - 1) {
//loops all indices
}
for (index in 0 untill array.size) {
//loops all indices
}
for (index in array.indices) {
//loops all indices (performs just as well as two examples above)
}
Example 3: 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"
Example 4: kotlin simple for loop
val names = listOf("Jack", "John", "Tim")
for(name in names){
println(name)
}
Example 5: kotlin iterate array
val names = listOf("Anne", "Peter", "Jeff")
for (name in names) {
println(name)
}
Example 6: kotlin for
val list = listOf("A", "B", "C")
for (element in list) {
println(element)
}