villakmfk.blogg.se - Objective c to swift migration

Xcode 7 will automatically build Swift 2 code in a special “compile for testing” build mode that makes it easier to control visibility from unit tests without making symbols Public. A consequence of this is that many symbols ended up being Public that really were not meant to be. Unit TestingĪ problem with unit testing Swift 1.x code is that Swift 1.x requires you to mark symbols Public to be visible to unit test bundles. Those changes, though, do not apply to functions imported from C and Objective-C APIs.Īdditionally, the model to declare parameter labels has been streamlined by removing the # option, which was used in Swift 1.x to denote an parameter having the same internal and external name.

the first argument name is implied by the function name.

So, functions adopt the same conventions as methods: As an example, the following code is now a legal way to represent an Either type: enum Either The statement print(a) will now correctly output Animals.Dragon, whereas in previous Swift versions the output was a bare (Enum Value).Īnother improvement related to Enums allows Swift to represent associated values of different types through an Enum. In this article, we are going to examine new features added to iOS main programming languages, the recently open sourced Swift and Objective-C. In the first three installments of this series, we have reviewed new frameworks introduced with iOS 9 SDK, enhancements to existing frameworks, and the new Safari content blocking API.

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This InfoQ article is part of the series “ IOS 9 For Developers ”. It comprises five articles that will cover what’s new in iOS 9 SDK, new features in Swift, Objective-C, and developer tools, and Apple’s new bitcode. This series aims at introducing all that is essential for developers to know about building apps for the latest release of Apple’s mobile OS. Along with the new SDK, iOS 9 is also marked by new developer tools to support some of its features, and new releases of Apple’s major programming languages, Swift and Objective-C. Although the new SDK does not introduce as many new or enhanced features as iOS 8, which included more than 4,000 new APIs, it does still provide a wealth of new functionality and enhancements.