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Empire Ballroom East - Foundations

Thursday June 21st, 10:15-11:00

Type Parameter Power-Up! Variance, Bounds, and Inference

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About this Session

Adding type parameters to classes is a powerful way to reuse code in Scala. By leveraging variance, type bounds, and higher-kinded types we can add further control and power to this reuse. We will learn how to use variance and type bounds to refine a type, how these types are inferred, and how higher-kinded types and type bounds combine with implicit resolution to give rise to the typeclass pattern, which helps bridge the gap between Scala's object-oriented and functional programming sides. We will also see how these features are evolving in future versions of Scala and Dotty.

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Speaker(s)

Chris Phelps
@CJPhelps

I've been coding in Java since the early days of the language, and in Scala for the last 5 years. My main areas of focus are in microservices and reactive approaches. I am always looking for Scala and general functional programming techniques help to achieve expressive, reusable code that is easy to understand and pleasant to work on. As our organization is a polyglot development environment, I'd also love to talk to you about adopting and evangelizing Scala within a receptive organization.

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