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First Look at Kotlin 1.4-M2: Standard Library Improvements


We keep working on Kotlin 1.4 and the next preview 1.4-M2 is just around the corner. Right now we’re ready to unveil some improvements from this preview; in this post, we’ll get you acquainted with the standard library changes.

Here are some key improvements in the standard library in 1.4-M2:

Changes to the existing API like updating signatures and introducing new constants
More functions in the common library
New functions for Arrays and Collections
Property delegation improvements
Even though Kotlin 1.4-M2 hasn’t been released yet, we’ve deployed its early version to the Kotlin playground so that you can try everything you find in this post. The code samples in this post run on the new version as well.

If you can’t wait to try the new version, subscribe to the Kotlin blog newsletter and you won’t miss the release day.

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