Data evolution with set-theoretic types

This article explores data evolution challenges in programming using set-theoretic types, focusing on the Elixir programming language. The author delves into handling backward compatibility when modifying public data structures, citing issues faced with Rust libraries inter-operating with C libraries. Emphasizing structural subtyping and revisions, the article proposes solutions for evolving library schemas without causing disruptions. It also discusses how Elixir’s type system can automatically manage schema revisions, ensuring type safety and backward compatibility. The piece aims to engage the community in discussions to refine and potentially formalize these concepts moving forward.

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