Oh, but your first sentence is all-too-true at face value. Rust is currently in the process of baking asynchronous I/O into the language, and their implementat

Oh, but your first sentence is all-too-true at face value. Rust is currently in the process of baking asynchronous I/O into the language, and their implementation cannot do this: http://blog.sigfpe.com/2008/12/mother-of-all-monads.html http://blog.sigfpe.com/2008/12/mother-of-all-monads.html.