Kotlin 1.5 out there with JVM information, sealed interfaces, and extra

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The primary main Kotlin launch of 2021 is now right here. Kotlin 1.5 provides JVM information, sealed interfaces, inline lessons, and the brand new JVM IR compiler. 

JVM information are lessons that carry a set set of values. Kotlin builders can now use a Kotlin class as a file in Java by making it a knowledge class and marking it with the @JvmRecord annotation. 

Sealed interfaces present extra management over inheritance. In keeping with Kotlin’s documentation, as soon as a module containing a sealed interface is compiled, no new implementations of it might seem.

Inline lessons are a subset of value-based lessons. They solely maintain values and can be utilized as wrappers for values of a sure kind, thus stopping extra overhead related to utilizing reminiscence allocations. 

Kotlin 1.5 additionally introduces a number of updates to the usual library, reminiscent of new steady APIs for unsigned integer varieties, extension capabilities, String and Char API enhancements, and period API modifications. 

New options added to the check library embrace single kotlin-test dependency within the widespread supply set of multiplatform tasks, automated selection of a testing framework for supply units, and assertion operate updates.

Extra data might be discovered within the Kotlin 1.5 release notes.

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