The Rust ecosystem has a number of coroutine implementations, while the core team is working on in-language implementations. Of these, one of the widely used is called May, which is a standalone stackful coroutine library based on generators. May strives to be user-friendly enough so that a function can be asynchronously invoked using a simple macro that takes in the function. In feature parity with the Go programming language, this macro is called go!. Let's look at a small example of using May.
We will use our good ol' friend, Collatz sequence, for this example; this will show us multiple ways of achieving the same goal. Let's start with setting up our project using Cargo:
[package]name = "collatz-may"version ...
