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Kotlins’ Collections implements interface List of Java. Public inline fun Iterable.filter(predicate: (T) -> Boolean): List How to explain the fact that ArrayList of Java is equal to List of Kotlin? val list: = () * Returns a list containing only elements matching the given. For instance, if you open _Collections.kt file from stdlib you can find many methods similar to this: /** Kotlin has a feature called Extension Functions which enables Kotlin Standard Library (stdlib) to extend functionality of JDK’s classes. This article focuses on some features of llections package. Kotlin’s Collections are based on Java Collection Framework. Let’s look how to use collections in Kotlin together, it will be exciting! This topic is relevant for versed developers that have serious intentions to come to grips with Kotlin and to be in the forefront of the trends, of course. If you missed this topic by some reason, we strongly recommend to take a look at this survey.

Iterable.any (): Boolean Returns true if collection has at least one element.

Developing android app with Kotlin is gaining popularity among the Java developers. Kotlin List.any () Examples Kotlin List.any () The Kotlin List.any () function can be used to check if the list has at least one element, or if the list has at least one element that matches the given predicate.