![]() ![]() This example is being shown just for learning purposes, no one would normally decide to use any of these methods considering that we can use take or drop instead. We have to remember that Kotlin collections indexes start from zero, thatâs why we check for index 4 in the boundaries. We have implemented both take and drop by checking that the index is below or above 4. ![]() ![]() Kotlin array initialization In the first example, we show how we can initialize arrays in Kotlin. Kotlin arrays are created with functions such as arrayOf or intArrayOf, or with classes such as IntArray or FloatArray. It returns the index of an element which will be returned by a subsequent call to the next () function. Each element can be referred to by an index. A simple solution is to use the nextIndex () function from the iterator returned by the ListIterator. `should take first five elements`() ĪssertThat(filtered).containsExactly(10, 7, 3, 33) A for loop over a range or an array is compiled to an index-based loop that does not create an iterator object. This article explores different ways to traverse a list with the index in Kotlin. For example, weâre taking the first five elements in our test below. The first method weâre going to look at is take, we can use this method when we need to take just the first n elements. Photo by John Cameron on Unsplash Kotlin take() forEachIndexed - Kotlin Programming Language JVM JS Native Version 1.8 kotlin-stdlib / llections / forEachIndexed forEachIndexed Common JVM JS Native 1.0 inline fun Array.forEachIndexed( action: (index: Int, T) -> Unit) (source) inline fun ByteArray.
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