https://swift.org/documentation/api-design-guidelines/(译: http://swift.gg/2016/05/18/api-design-guidelines/)
https://github.com/raywenderlich/swift-style-guide(译: http://codebuild.me/2015/09/14/raywenderlich-swift-style-guide/)
https://swift.org/documentation/api-design-guidelines/(译: http://swift.gg/2016/05/18/api-design-guidelines/)
https://github.com/raywenderlich/swift-style-guide(译: http://codebuild.me/2015/09/14/raywenderlich-swift-style-guide/)