Refactoring to Expressive Kotlin | Dmitry Kandalov and Duncan McGregor

Dmitry Kandalov and Duncan McGregor demonstrate how to use Kotlin features and IntelliJ to refactor complex code into expressive, readable structures.

Recording brought to you by American Express. americanexpress.io/kotlin-jobs Enjoyed this talk? Experience it live at KotlinConf 2025—the biggest in history! Grab your tickets now: kotl.in/kotlinconf25 Kotlin was built from the beginning as an expressive language, but we still scratch our heads when reading some code, especially if it is trying to do something complicated. Join Duncan and Dmitry as they examine code examples and use the power of the Kotlin language and IntelliJ to refactor them into code that reads as it works. We’ll learn how to express intent with the scope functions: let, run, with, apply, and also. We’ll see how defining our own extension functions allows code to flow, and move on to more advanced topics like separating pure from impure functions, cohesion, tiny types and domain specific languages. #kotlin #kotlinconf