Verse: A New Functional Logic Language

Verse is a new programming language, being designed at Epic Games as the language of the metaverse. Verse is a functional logic language, with a bunch of innovative ideas. Like Haskell, Verse is declarative (a variable in Verse stands for just one, immutable value), and higher order (lambdas are first class). But Verse goes well beyond Haskell, with existential variables, unification, expressions that yield multiple values, and much more besides.

In this talk we'll give you a sense of what functional logic programming is about, what it looks like to program in Verse, and how we can give meaning to Verse programs using rewrite rules.