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Rust modules vs files

Jul 01, 2019

18 min #rust

A while back, I asked on Twitter what people found confusing in Rust, and one of the top topics was “how the module system maps to files”.

I remember struggling with that a lot when I first started Rust, so I’ll try to explain it in a way that makes sense to me.

Important note

All that follows is written for Rust 2021 edition. I have no interest in learning (or teaching) the ins and outs of the previous version, especially because it was a lot more confusing to me.