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Kotlin is a modern, concise, and safe programming language developed by JetBrains. It targets the JVM, Android, JavaScript, and native platforms using Kotlin Multiplatform. Offering null-safety, coroutines for asynchronous programming, and full interoperability with Java, Kotlin enables developers to write expressive and reliable code for a variety of environments.
This comprehensive guide covers everything from Kotlin syntax and basic types to advanced topics such as coroutines, domain-specific language (DSL) creation, multiplatform projects, and Android Jetpack integration. You'll learn about collections, control flow, functions, generics, object-oriented and functional programming features, extension functions, delegation, and more. The notes also explore popular Kotlin libraries such as Ktor, Kotlinx Serialization, and kotlinx.coroutines.
Whether you're transitioning from Java, starting Android development, or exploring cross-platform solutions, these notes provide a thorough reference for professional Kotlin development.