Swift: Using Upcoming Feature Flags

[NewsBot]

A new Swift blog post/announcement has been posted!

Beginning in Swift 5.8 you can flexibly adopt upcoming Swift features using a new compiler flag and compilation condition. This post describes the problem upcoming feature flags solve, their benefits, and how to get started using them in your projects.

Source-Breaking Changes

Each new release of Swift adds features and capabilities. These changes go through the Swift Evolution process where they are proposed, discussed by the community, and accepted.

One important consideration for all changes to Swift is source compatibility. To be source compatible, existing Swift code must continue to compile and behave as expected with new versions of the compiler.

To help meet this strong goal, the Swift project maintains an extensive source compatibility test suite. Proposed changes are tested t...

Get the full details here: https://swift.org/blog/using-upcoming-feature-flags/