Slug: async-join-01 · Paired reading: Chapter 13
Prompt
Join2<A, B> with Unpin children: poll both, buffer early Ready,
complete when both done. Include block_on for tests.
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.
advanced · order 157