Date: October 2024
Previous revision: [June 2023]
The design of the Mojo references subsystem is starting to come together. To finalize the major points, it helps to come back and re-evaluate several early decisions in Mojo to make the design more self consistent. This is a proposal to gain consensus and alignment on naming topics, etc without diving deep into
This doc has been moved to A Google doc to allow easier commenting and collaboration.
Author: Chris Lattner
Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.
This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.