> Long story short, this library solves the function colouring problem
For a great example of this, see OCaml 5 support for effect handlers. It's basically a generalisation of exceptions, very lightweight and elegant. I can't help but think this approach would have been a much better fit for Rust than the current async effort. Monads like Async and Result are a slippery slope into the world of FP, something Rust will never excel at. Effect handlers are an alternative which arguably better align with systems programming.
For a great example of this, see OCaml 5 support for effect handlers. It's basically a generalisation of exceptions, very lightweight and elegant. I can't help but think this approach would have been a much better fit for Rust than the current async effort. Monads like Async and Result are a slippery slope into the world of FP, something Rust will never excel at. Effect handlers are an alternative which arguably better align with systems programming.