Kotlin 1.4.20

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Kotlin·6 years ago · Nov 19, 2020, 10:57 AMDeprecationMay break your integrationAI-assisted summary

Summary

Deprecate Kotlin Android Extensions and add Jetpack Compose support in the JVM IR backend, plus new JEP 280 string concatenation and script import access.
Extensive FIR and JVM IR enhancements: optimized delegated properties, 'in' checks, native property initialization consistency, and many compiler crash, type inference, and code‑generation bug fixes.
Performance and stability improvements for coroutines, UI responsiveness, and IDE tooling, with updated documentation and editor features.

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