Seamless Migration from Scala to Kotlin with Interface & Class Delegation Approach
Briefly

Migrating from Scala to Kotlin can be complex due to Scala's use of implicit function parameters and traits that differ from standard interfaces. Implicit parameters complicate migration as they have no direct Kotlin counterparts, which can disrupt API usability. Scala traits offer more than typical interfaces, necessitating careful consideration in migration to avoid unexpected changes. However, Scala and Kotlin can easily interoperate thanks to JVM compatibility, which allows for incremental code changes. The proposed solution involves interface extraction and a delegation pattern, ensuring legacy Scala functionality is preserved while creating a new Kotlin interface abstraction.
Scala's implicit function parameters introduce a complexity during migration to Kotlin, as they lack a direct equivalent, complicating API interactions and reliance.
Unlike interfaces in many languages, Scala traits offer additional capabilities that require careful consideration during conversion, leading to potential behavior changes in Kotlin.
The Scala and Kotlin interoperability allows for seamless code interchangeability, leveraging the underlying JVM architecture and facilitating incremental migrations without breaking existing implementations.
By implementing an interface extraction and delegation pattern, we can maintain existing functionality while creating new abstractions in Kotlin that facilitate smoother interactions with Scala components.
Read at Medium
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