First-Class Subtypes
Programming Languages
2019-05-17 v1
Abstract
First class type equalities, in the form of generalized algebraic data types (GADTs), are commonly found in functional programs. However, first-class representations of other relations between types, such as subtyping, are not yet directly supported in most functional programming languages. We present several encodings of first-class subtypes using existing features of the OCaml language (made more convenient by the proposed modular implicits extension), show that any such encodings are interconvertible, and illustrate the utility of the encodings with several examples.
Keywords
Cite
@article{arxiv.1905.06546,
title = {First-Class Subtypes},
author = {Jeremy Yallop and Stephen Dolan},
journal= {arXiv preprint arXiv:1905.06546},
year = {2019}
}
Comments
In Proceedings ML 2017, arXiv:1905.05909