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new typeclass derivation library for Scala 2 and 3 (shapely)
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Sam Halliday - Shapely: Super Simple Typeclass Derivation
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- Presented by Sam Halliday
Intermediate. Assumes working knowledge.
1.8K views4 years ago1 recommendation
Programming languagesSoftware designScalaLanguage design and type systems
Sam Halliday explains how to write and derive typeclasses in Scala 2 and 3 using the Shapely library.
Learn what a typeclass is, and why you'd want to derive one. Then learn how to write a typeclass and give your users the ability to make use of it for all their domain objects using a new library that I wish I wrote 10 years ago. Works with both Scala 2 and Scala 3, results in super fast compilations, and doesn't require any type-level (aka "generic programming") knowledge. 2022.scala.love twitter.com/scala_loveWhy it's here
1 person recommends thisWhat people say. Recommended as an introduction to the Shapely library for typeclass derivation in Scala.