What’s the difference between a val and a constant? The difference is that var declares a mutable variable and that val declares a read-only (assign-once) variable. What is the difference between a val and a var declaration? Val b: String? = null //Nullable reference- OK 9. val a: String = null //Non-null reference- compilation error The type system distinguishes between references that can hold null and those that can not. Kotlin’s type system is aimed at eliminating the danger of null references from code, also known as The Billion Dollar Mistake. What is Null Safety and Nullable Types in Kotlin? What are some of the best Kotlin features?Ĩ. We can easily call Java code from Kotlin and vice versa. It is designed to interoperate fully with Java, and the JVM version of its standard library depends on the Java Class Library. Does Kotlin fully interoperate with Java? When targetting native, it will produce platform-specific code (via LLVM). When targetting Javascript, it transpiles to ES5.1. When targeting the JVM, Kotlin compiles to java bytecode. Kotlin combines both functional and object-oriented constructs. Is Kotlin a functional language or an object-oriented one? We can use it for various types of development, such as for example, server-side development, Android, web development or desktop development. Kotlin mainly targets the JVM, Android, JavaScript, and Native. The project started in 2010 and the first official 1.0 release was in 2016. Kotlin is a cross-platform, statically typed, general-purpose programming language with type inference developed by JetBrains. Given below you’ll find 50 interview questions with detailed answers which will help you build a solid foundation before you head to the interview. Whether you are a beginner or a highly experienced developer, core Kotlin plays a very crucial role in any Kotlin-related interview. This article on Kotlin interview questions has been created to help you understand the basic concepts of Kotlin programming language for interview purposes.
0 Comments
Leave a Reply. |