Kotlin 1.3 Docs

Kotlin is a statically-typed programming language that runs on the Java virtual machine and also can be compiled to JavaScript source code or use the LLVM compiler infrastructure.
Its primary development is from a team of JetBrains programmers based in Saint Petersburg, Russia.
While the syntax is not compatible with Java, Kotlin is designed to interoperate with Java code and is reliant on Java code from the existing Java Class Library, such as the collections framework.
Kotlin uses aggressive type inference to determine the type of values and expressions for which type has been left unstated.
This reduces language verbosity relative to Java, which demands often entirely redundant type specifications.As of Android Studio 3.0 Kotlin is a fully supported programming language on Android and lets the user choose between targeting Java 6- or Java 8-compatible bytecode.Table of ContentKotlin for Server SideKotlin for AndroidKotlin for JavaScriptKotlin for NativeCoroutinesMultiplatformWhats New in 1.1Whats New in 1.2Whats New in 1.3Basic SyntaxIdiomsCoding ConventionsBasic TypesPackages and ImportsControl FlowReturns and JumpsClasses and InheritanceProperties and FieldsInterfacesVisibility ModifiersExtensionsData ClassesSealed ClassesGenericsNested ClassesEnum ClassesObjectsInline ClassesDelegationDelegated PropertiesFunctionsLambdasInline FunctionsPlatform-Specific DeclarationsBuilding with GradleDestructuring DeclarationsCollectionsRangesType Checks and CastsThis expressionsEqualityOperator overloadingNull SafetyExceptionsAnnotationsReflectionType-Safe BuildersType AliasesStandard Librarykotlin.testKeywords and OperatorsGrammarCalling Java from KotlinCalling Kotlin from JavaDynamic TypeCalling JavaScript from KotlinCalling Kotlin from JavaScriptJavaScript ModulesJavaScript ReflectionJavaScript DCEConcurrencyImmutabilityKotlin LibrariesPlatform LibrariesC InteropObjective-C and Swift InteropGradle PluginDebuggingFAQCoroutines GuideBasicsCancellation and TimeoutsChannelsComposing Suspending FunctionsCoroutine Context and DispatchersException HandlingSelect ExpressionShared Mutable State and ConcurrencyDocumenting Kotlin CodeUsing KaptUsing GradleUsing MavenUsing AntKotlin and OSGiCompiler pluginsCoding ConventionsKotlin EvolutionStability of different componentsCompatibility Guide for Kotlin 1.3FAQComparison to JavaGetting Started with IntelliJ IDEAGetting Started with EclipseWorking with the Command Line CompilerWorking with Build ToolsKoansGetting Started With Android DevelopmentKotlin Android ExtensionsAndroid FrameworksMixing Java and Kotlin in one projectKotlin to JavaScriptGetting Started with GradleGetting Started with IntelliJ IDEAGetting Started with MavenCreating a Kotlin JavaScript library with the Command Line CompilerWorking with Kotlin and JavaScript ModulesWorking with JavaScriptDebugging Kotlin in browseriOS and AndroidMultiplatform LibraryBasic Kotlin/Native ApplicationInterop with C LibrariesMapping Primitive Data Types from CMapping Struct and Union Types from CMapping Function Pointers from CMapping Strings from CWorking with Kotlin/Native LibrariesTargeting Multiple PlatformsKotlin/Native as a Dynamic LibraryKotlin/Native as an Apple FrameworkGradle for Kotlin/NativeMultiplatform Project: iOS and AndroidAsynchronous ProgrammingIntroduction to Kotlin Coroutines on the JVMCreating Web Applications with Http ServletsCreating a RESTful Web Service with Spring BootSetting up Kotlin on TeamCityLearning Kotlin with EduTools pluginTeaching Kotlin with EduTools pluginBooksMore Resources