Domain Specific Languages in Scala

I will introduce some practical examples of DSLs: regular expressions, parser combinators, a tensorflow-like language to describe vector & matrix computations. We will use these examples to discuss some advanced topics in domain specific language construction in Scala:

1. When do you use applicative and monadic style for DSLs?
2. When should your DSL be lazy?
3. How to safely observe sharing (recursive definitions)?
4. How to make your DSL be extensible?
5. How do you use Scala’s type system to ensure type safety of a DSL?

Session length

90 minutes

Language of the presentation

English

Target audience

Intermediate: Requires a basic knowledge of the area

Who is your session intended to

People who dabble in functional programming in Scala and who want to get better at writing sophisticated embedded domain specific languages. General and domain-specific library developers.

Speaker

Alexander Konovalov (Compellon, Analytics Engineer)

• I have presented an academic paper at WWW2017, https://www.slideshare.net/AlexanderKonovalov13/learning-event-extractors-from-knowledge-base-revisions and presented https://alexknvl.com/docs/scalaz_summit_presentation.pdf at Lambdaconf 2018 but in an informal setting during scalaz summit and without much preparation.

Contributes

• I am a contributor and a team member of Scalaz.