Backporting new features with @_alwaysEmitIntoClient Swift attributes provide additional information about a declaration or type. In this post, Federico Zanetello explains how SwiftUI uses the @_alwaysEmitIntoClient attribute to make new features available on older OS versions. Posted on August 6, 2021 | swiftui abi
Swift Evolution - Plan for module stability In this post on the official Swift forum, Jordan Rose outlines the proposed solution for ABI stability, which is something we should get when Swift 5 arrives. This is something a lot of people in the community are looking forward to, and it’s really interesting to see how it might be achieved. Posted on July 28, 2018 | evolution abi stability
Binary Frameworks in Swift Peter Steinberger explores what Application Binary Interface means in the context of Swift, and when it matters. Posted on February 19, 2018 | ABI