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Prevent ID-mistakes using Rust types

Recently, I've been interested in designing software to make hard-to-find bugs reveal themselves at compile-time. An idea I've read about (I forgot where) that I found fascinating is the use of a special type for IDs in objects that represent database rows. Problem For example, there may be a User table and a Posts table in the database, with each post belonging to one user. Each of these would be mapped to a class/struct in the programming language. Perhaps each... full post»