Swift Standard Library Reference

https://developer.apple.com/library/prerelease/ios/documentation/General/Reference/SwiftStandardLibraryReference/

Using Swift with Cocoa and Objective-C

https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/BuildingCocoaApps/

The Swift Programming Language

https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/LexicalStructure.html#//apple_ref/doc/uid/TP40014097-CH30-XID_861

https://developer.apple.com/swift/

https://developer.apple.com/technologies/

Swift资源大集中 有文档和视频，sample code..

https://developer.apple.com/swift/resources/

swift资料合集