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In this talk, I'll look at the different uses to which tagless final is put to, and see what we can learn about when it is useful and when it just gets in the way.
Tagless final can be either an amazing tool that allows for incredibly expressive code, or a colossal pain in the butt. So how do we make it more the former and less the latter? In this talk I'll describe when tagless final is appropriate, and Scala programming techniques that can make the notational overhead disappear.
Tagless Final is a common in the Scala world, but does it really justify the resulting code complexity? I've spent a decade writing a library using tagless final, so I can't claim I don't like the technique. At the same time I've worked on many codes bases where I felt it added a lot of complexity for little value.
In this talk I'll look at the different uses to which tagless final is put to, and see what we can learn about when it is useful and when it just gets in the way. Then, when we decide it is useful, I'll show how we can use subtyping, extension methods, and path-dependent types to allow the end user to write tagless final code that feels a natural as writing code without it, and won't have people shouting "What the F[_]?!"
In this talk, we'll cover the essentials of macros, why they are useful, why you should care about them, and how to become as good as you need with them for practical purposes.
Case study. Summary of over a year of experience building AWS lambdas using Scala 3, scala-cli, and GraalVM. Presentation of the open-sourced library providing custom lambda runtime developed for that purpose.
In this talk I will explain the inner workings of an organisation that goes into releasing, maintaining and developing Scala and core parts of its ecosystem.
This talk will be a quick introduction to the Unison "paradigm" and language, from the perspective of a long-standing Scala programmer.
This talk will introduce Mill: a newer build tool that does everything SBT does, but better. Faster, simpler, easier, Mill democratizes the build so you don't need to be a build tool expert to work on it.
