This shouldn’t come as a surprise given the fact that technology is constantly evolving, just like the expectations and needs of end customers. In the world of mobile development, things are always changing. Let’s see an example.What is Kotlin and Why Do Mobile App Developers Love It? Such functions are essential in Kotlin as many library functions rely on this concept. If a function takes another function as an argument or returns another function as its result, it’s called a higher-order function.

MyFunction('HelloWorld', 42) Higher-Order Functions String templates can be used, which means that it’s possible to include variables and even expressions in Strings directly using $varname or $.Type inference is supported in many situations as shown with val inserted, which also could be declared with an explicit type as val inserted: String.Kotlin does not require you to use semicolons for separating statements (in most cases).In case of a Unit return, which corresponds to Java’s void, the compiler does not require you to explicitly define the return type, so the part : Unit could be omitted The return type of the main is Unit, also prefaced by a colon.Parameters and also variables in Kotlin are declared by defining a name and a type, both separated by a colon as you can see in args: Array.Functions are initiated by the keyword fun, followed by a name.Println('Let's get started with $inserted') As in Java, Kotlin programs are entered via a main method, such as the following: package de. String, List) and of course by providing great features, which are in large part enabled by applying compiler-supported techniques. Even more, Kotlin can be seen as an extension to the Java language, making it better by adding functionality to existing standard classes (e.g. Kotlin was inspired by many modern programming languages like C#, Groovy, Scala and also Java.

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