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Yo Dawg, Heard You Want To FlatMap Your Direct-Style

During the talk, we’ll build a small effect system using solely Scala 3 context functions step-by-step.

Riccardo Cardin
Senior Software Engineer at Lastminute.com, Blogger at RockTheJvm.com
About This Talk

The direct style in Scala 3, influenced by languages like Kotlin and Rust, simplifies functional programming by eliminating for-comprehension syntax on higher-kinded types. It offers an imperative approach supported by context functions.

While some many Scala developers support it, others prefer the traditional functional styles used in libraries like Cats Effect and ZIO, which manage effects differently. The potential of combining Algebraic Effects and Handlers with Scala 3's direct style opens new possibilities for exploring different programming paradigms and libraries.

During the talk, we’ll build a small effect system using solely Scala 3 context functions step-by-step. With some enhancements to the common approach, we’ll discover that adding for-comprehension capabilities to such a system is possible, ending with a system that can express the same program using either direct style syntax or monad style.

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Location

Centrum Konferencyjne POLIN, Poland
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