Kotlin is a modern, open-source programming language that was first introduced by JetBrains in 2011. It is designed to be concise, expressive, and safe, making it ideal for developing Android apps, server-side applications, and other types of software. Kotlin is fully compatible with Java, meaning that developers can easily integrate Kotlin into existing Java projects and use Java libraries in Kotlin code.
Kotlin is a statically typed language, which means that the type of a variable is known at compile time. This enables the compiler to catch many errors before the code is even run, improving the reliability and safety of the code. Additionally, Kotlin features a type inference system that can often deduce the type of a variable from the context in which it is used, reducing the amount of boilerplate code that developers need to write.
One of Kotlin's key features is its support for functional programming. Kotlin includes many of the functional programming concepts found in languages like Scala and Haskell, such as lambdas, higher-order functions, and immutable data structures. This makes it easy to write concise and expressive code that is also efficient and easy to reason about.