twostraws/whats-new-in-swift-5-1

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twostraws/whats-new-in-swift-5-1

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An Xcode playground that demonstrates the new features introduced in Swift 5.1.

What’s new in Swift 5.1?

This is an Xcode playground that demonstrates the new features introduced in Swift 5.1:

Improvements to synthesized memberwise initializers
Implicit returns from single-expression functions
Universal Self
Opaque return types
Static and class subscripts
Warnings for ambiguous none cases
Matching optional enums against non-optionals
Ordered collection diffing
Creating uninitialized arrays

This is designed to complement my existing article What’s New in Swift 5.1. You might also want to read What’s New in Swift 5.0 and What’s New in Swift 4.2. 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 [email protected].

Note: Until a version of Xcode ships with Swift 5.1, you should download the latest Swift trunk development snapshot and activate it inside your current Xcode version.

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