What’s new in Kotlin 1.3

Kotlin 1.3 introduces contracts to the type system

The production version of Kotlin 1.3 is now available and introduces contracts to the type system.

Kotlin had its origins as a language for the JVM but has since been expanded to compile to JavaScript as well. Google has endorsed Kotlin as a mechanism for building Android mobile applications, alongside Java itself. 

Where to download Kotlin

You can access the Kotlin source code on the project’s GitHub repo.

Current version: What’s new in Kotlin 1.3

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