Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

workspace

A set of crates built together that share one Cargo.lock and one target folder.

A Cargo workspace groups member packages under a root Cargo.toml with [workspace]; members share Cargo.lock, the target directory, and optional [workspace.dependencies].

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