Girard and Reynolds independently invented System F (a.k.a. the second-order polymorphically typed lambda calculus) to handle problems in logic and co…| www.sciencedirect.com
This post is part 3 of a series. Click here to go to the beginning of the series.| Considerations on Codecrafting
In 2020, I released Cubiml, showing how to combine full type inference with structural subtyping in an ML-like language, and earlier this year, I followed it up with PolySubML, extending it with higher rank types and existential types among other features. For my next language (which I’ll call X here, since I haven’t chosen a name yet), I set the ambitious goal of supporting all of OCaml’s most notable functionality on top of everything PolySubML already supports. In this post, I will t...| Considerations on Codecrafting
Type inference has a reputation for causing unhelpful error messages from the compiler when there is a type error. For example, here’s a typical comment:| Considerations on Codecrafting