Enter your book access code

The curriculum, drills, tutor, and interviewer mode are for readers of Ace the Rust Interview. The code is printed in the Preface (Companion site access).

Don’t have the book yet? The landing page stays open — purchase unlocks this gym.

beginner · order 49

When Rc appears (preview)

own-rc-preview-01Related book chapters: 5, 11 (optional — this page is complete on its own)Rcpreview

Slug: own-rc-preview-01 · Paired reading: Chapters 5 and 11

Prompt

fn share_label(label: String) -> (Rc<String>, Rc<String>) — two handles to the same allocation. strong_count should be 2 after return (before either drops). Preview of shared ownership — not the default.