What’s new in Swift 5.5?

This is an Xcode playground that demonstrates the new features introduced in Swift 5.5:

Async await
Async sequences
Effectful read-only properties
Structured concurrency
async let bindings
Continuations for interfacing async tasks with synchronous code
Actors
Global actors
Sendable and @Sendable closures
if for postfix member expressions
Allow interchangeable use of CGFloat and Double types
Codable synthesis for enums with associated values
lazy now works in local contexts
Extend property wrappers to function and closure parameters
Extending static member lookup in generic contexts

This is designed to complement my existing article What’s New in Swift 5.5. You might also want to read previous articles about the evolution of Swift 5:

Alternatively, I have a whole website dedicated to tracking what’s new in Swift – you should check it out at https://www.whatsnewinswift.com.

If you hit problems or have questions, you’re welcome to tweet me @twostraws or email paul@hackingwithswift.com.

GitHub

https://github.com/twostraws/whats-new-in-swift-5-5