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Подробная иллюстрированная статья про Kotlin Variance модификаторы In и Out

#kotlin

https://typealias.com/start/kotlin-variance/
Dave Leeds on Kotlin Generic Variance Create subtypes from your parameterized types using Kotlin's generic variance. In this chapter, we'll learn about covariance, contravariance, and how they can be applied in declaration-site variance and use-site variance, based on three simple rules of subtypes.
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