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kotlin

Kotlin Array Slice Indexing

Let's say I want to iterate through all but the first element in Kotlin IntArray. Currently, I'm doing it like this:

fun minimalExample(nums: IntArray): Unit {
    for(num in nums.sliceArray(IntRange(1,nums.size-1))) println(num)
}

Is there an easy syntax for doing this like in Python (I don't want to have to specify the ending index of the nums array):

for (num in nums[1:])
Solution

  • I think you could use Kotlin's drop which will remove the first n elements of an array.

    fun minimalExampleWithDrop(nums: IntArray): Unit {
    for(num in nums.drop(1)) println(num)
}

minimalExampleWithDrop(intArrayOf(1,2,3,4,5,6))
// 2
// 3
// 4
// 5
// 6

    Repl.it: https://repl.it/repls/SvelteShadyLivecd