In this codelab, you will use the Kotlin Playground to become familiar with lists in Kotlin and create a program for ordering different variations of noodle soup. Learning how to create and use lists is an important programming concept to add to your toolbox, and it will enable you to create more sophisticated apps. For example, there could be a list of news articles, songs, calendar events, or social media posts within an app. In programming, lists are also very useful. In this Kotlin Tutorial, we learned how to filter a List using a condition/predicate with access to index in the predicate, using filterIndexed() function, with the help of examples.It's common to make lists for all sorts of situations in your everyday life such as a list of things to do, a list of guests for an event, a wish list, or a grocery list. Output Original List : įiltered List : Conclusion

Var filteredList = myList.filterIndexed(') In the following program, we will take a List of Integers and filter the numbers based on the condition formed using index and the element. Therefore, we can fall filterIndexed() function on a List, or a Mutable List.

The original list on which filterIndexed() function is called, remains unchanged. List.filterIndexed() function returns a List.Įlements of the List that return true for the given predicate, make it to the filtered List. Predicate is a lambda function that takes the index and element of the List as parameter and returns a boolean value. The syntax to call filterIndexed() function on a List with a predicate is List.filterIndexed(predicate)

Kotlin for each with index