Lambda is the whole function containing the logic of how to compute the Boolean result from the given Int argument, while the result is simply a Boolean value. Note the difference between storing a Lambda and storing the result of applying this Lambda. What will be the type of isEven variable here? In this case, we have a Lambda that takes Int as a parameter and returns Boolean as a result, you can see the corresponding function type. In this case, is the type that takes two integer parameters and returns an integer as a result. First, parameter types are written inside the parentheses and then an arrow, then the return type. In Kotlin, you can store Lambda in a variable, which type does the variable have in this case? If we specify this type explicitly, we'll see a so-called function type. We'll also discuss how you can pass Lambda as an argument to Java method, and also touch a topic of function types and probability. In this video, you'll learn about function types. We'll discuss: basic syntax, nullability, functional programming with Kotlin, object-oriented programming with Kotlin, the power of the Kotlin standard library, and Java interoperability. Note that this course won't cover the programming fundamentals. The course is based on your Java experience it shows the similarities between the two languages and focuses on what's going to be different. We'll have a basic overview of the language, as well as a discussion of many corner cases, especially concerning Java interoperability. This course aims to share with you the power and the beauty of Kotlin. Kotlin code might be compiled not only to JVM bytecode but to JavaScript and Native code as well, but this course is focused on Kotlin/JVM. It’s a pragmatic language with a very low learning curve, and can be quickly grasped by Java developers. Kotlin is 100% compatible with all existing Java frameworks, and has good tooling support. It can be used almost everywhere Java is used today: for server-side development, Android apps, and much more. Kotlin is concise, safe, pragmatic, and focused on interoperability with Java code. The Kotlin programming language is a modern language that gives you more power for your everyday tasks.

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