Rust Async Programming: Mastering Pin and Pin-Project

This article delves into the intricacies of using Pin and the pin-project crate in Rust's async programming paradigm. Starting with associated types and type inference in Futures, the author builds up to the necessity of Pin to address memory safety issues arising from mutable borrows and moves within the state machine implementation of async functions. The article thoroughly explains Pin's function, usage, and how pin-project simplifies code, ultimately resulting in a safe and robust asynchronous state machine. It also highlights subtle considerations when employing pin-project.