Rust’s way of importing from other modules is bizarre

David — Mon, 17 Feb 2025 00:05:17 +0000

I come from a background of Pascal and Delphi. From about 1989 Turbo Pascal 4 and subsequently Delphi had a really useful unit system for breaking a program down into multiple source files. A unit is the equivalent of Rust’s mod. Anything you wish to export from a unit is put in the interface section of the source file- consts, types, functions etc. Like making them pub in Rust. Then in the source file that wants to use these, you just put using name-of-unit. No hassles, very easy to use and it just works.

Now in Rust, they have a cockermanie system. I had a main.rs that had several Structs (Card and Game) and decided to put it in another file poker.rs inside a mod poker {.

I made both Structs pub. When compiling, there’s no errors in poker.rs but in the main.rs which has

pub mod poker;
use poker::{Card, Game};

There’s red lines under Card and Game.

note: struct `crate::poker::poker::Card` exists but is inaccessible etc. Grrr.

Now, no doubt there is soime way to make this work but why make it so difficult?

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Rust’s way of importing from other modules is bizarre