This document contains code snippets demonstrating various Kotlin programming concepts including functions, null safety, extension functions, and asynchronous programming. It defines functions for squaring a number, sorting with a comparator, handling null values, extending the String class, and performing asynchronous operations with CompletableFuture to map and join results.
This document contains code snippets demonstrating various Kotlin programming concepts including functions, null safety, extension functions, and asynchronous programming. It defines functions for squaring a number, sorting with a comparator, handling null values, extending the String class, and performing asynchronous operations with CompletableFuture to map and join results.
The document discusses Kotlin support in Spring Framework 5. It covers how Kotlin can be used with Spring Boot and Spring's programming model through features like extension functions and reified type parameters. It provides code examples of using Kotlin idioms with Spring components like the application context, JdbcTemplate, and RestTemplate to make the code more concise and readable. It also briefly mentions new features in Spring Framework 5 like reactive support using Spring WebFlux and using router functions with Kotlin.
This document shows how to configure Kotlin code to be tested with Mockito by modifying classes to be mockable and adding necessary dependencies. It demonstrates mocking a User class to return a hardcoded age value, originally failing because the class was final, then succeeding by making it open and implementing an interface.
Google has discontinued the Nexus Player streaming device. The Nexus Player was Google's first and only streaming device running Android TV. It was launched in 2014 but will no longer be sold through Google's online store or other retailers. Developers who want to test their Android Auto apps can use an emulator called "desktop head unit" available in the Android SDK to simulate an auto head unit on their desktop.
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