Swift Playgrounds is a development environment for Swift created by Apple Inc. The original macOS version of Playgrounds, launched as an integrated part of Xcode, was announced and released by Apple Inc. in June 2, 2014 during WWDC 2014
A Best-in-Class iOS App: The Book (Beta Edition) is being written to help any level of iOS developer take full advantage of the platform, create & design meaningful apps & ensure anyone can use them. Master accessibility, design, user experience and iOS APIs.
If you're finding a way to learn Swift quickly, SwiftCode is a suitable choice for that. You can learn anywhere, anytime right on your iPhone, iPad and even Mac in the future.