We can understand it using the below code example. The value at a position in a list can be obtained just by mentioning the index of the value like variableindex The value for a key in a map can be. The elements of ArrayList class are accessed randomly as it works on index basis. This method returns an integer value denoting the index of the first element from the list. If you do not want to use the built-in functions of Kotlin Arrays to find the index of an item in Array, you can use the For Loop to find the index of an element in the array. This method takes a predicate function as an argument. We use the destructuring declarations and capture the ( index, value) properties returned by the component1 () and component2 () methods of the IndexedValue into the index and vowel variables respectively. Output Volvo index is: 4 Use For loop to find the index of an item in Array The withIndex () method returns an IndexedValue instance. Meaning, interface may have property but it needs to be abstract or has to provide accessor implementations. They can contain definitions of abstract methods as well as implementations of non-abstract methods. It is a library function that allows accessing indexes and values through a loop. Get the index of an item in integer type values array fun main() Kotlin interfaces are similar to interfaces in Java 8. Get the Current Index of an Item in a forEach Loop Using withIndex () in Kotlin Besides forEachIndexed (), we can also use the withIndex () function to get the current index of an item in a forEach loop in Kotlin.
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