Learn what's new in Swift 4.1 with a playground

See the code, run the code, edit the code

Paul Hudson    April 4th 2018    @twostraws

Previously I wrote about the new features in Swift 4.1, but it's a lot more fun to see things in action and experiment yourself.

So, I just released an Xcode playground that demonstrates the new features introduced in Swift 4.1, complete with examples that I hope make them easy to understand and apply in your own work:

• Synthesized Equatable and Hashable
• Key decoding strategy in Codable
• Conditional conformances
• Recursive constraints on associated types
• Build configuration import testing
• Target environment testing
• flatMap() is now (partly) compactMap()

The playground is available on GitHub, so I hope you'll try it for yourself: what's new in Swift 4.1?

I should add that the task of building this playground was made much easier thanks to previous work done by Ole Begemann.

SPONSORED AppSweep by Guardsquare helps developers automate the mobile app security testing process with fast, free scans. By using AppSweep’s actionable recommendations, developers can improve the security posture of their apps in accordance with security standards like OWASP.

Learn more

Sponsor Hacking with Swift and reach the world's largest Swift community!