To access index of the elements while filtering elements in a Kotlin List, use filterIndexed() function. For each element in the List, the predicate lambda function receives index and element as parameters. In this tutorial, we will learn how to use filterIndexed() function on a List, to ...
To find the last occurrence of a given element in this List in Kotlin, calllastIndexOf()function on this List object and pass the element, whose index we want, as argument to this function. The Kotlin List.lastIndexOf() function returns the index of the last occurrence of the specified ...
Null values can cause errors in our code, while empty values can add unnecessary bloat to our list. In this tutorial, we’ll explore various ways to remove null and empty values from a List in Kotlin. 2. Using Simple List Iteration The first approach we’ll use is the programmatic ...
The arrayList is defined as one of the kotlin collection that can be used to create the dynamic array the user may create additionally or removed the data at run time it automatically add or delete the datas in the list based on the requirement so based on this scenario the arrayList class...
原文: https://howtodoinjava.com/spring-webflux/reactive-websockets/ 在这个 spring webflux websocket 示例中,学习使用 spring webflux 创建支持客户端和服务器之间的 websocket 连接的响应式应用程序。 websocket 是Web 浏览器和服务器之间的双向全双工持久连接。 建立连接后,它将保持打开状态,直到客户端或服务器...
of the original elements. Grouping elements of the original array by the key it returns with the separate selector and it will be applied to the specific element returns with the collection interface like a map where as each key is associated with the list of corresponding values of the map...
This tutorial will discuss adding a class to a given element using the classList property in JavaScript. Add a Class to a Given Element Using the classList Property in JavaScript If you want to add a class to a given element in JavaScript, you can use the classList property. First, you...
Thereifiedkeyword is a programming concept mostly used while working with generics in Kotlin. ADVERTISEMENT We know that generic type was introduced in Java 5 to add type safety to applications and prevent explicit type casts. One limitation with generics is that you cannot access type information ...
private fun JsonElement.toAnyNullableValue(): Any? = when (this) { is JsonPrimitive -> toScalarOrNull() is JsonObject -> toMap() is JsonArray -> toList() } private fun JsonObject.toMap(): Map<String, Any?> = entries.associate { ...
Note that we named the libraryjunit-bom, which isn't a valid variable name inKotlin. Gradle deforms the name and replaces the dashes with dereferenced periods, so when we want to use it we'll usejunit.bominstead -- which is a perfect time to see it in action. ...