#Swiftify review code#
There may be pieces of code that you want to leave in Objective-C, and there’s nothing wrong with that. h file to your project and name it -Bridging-Header.h, then make sure you link its path in your target’s project settings like so: Do I need to convert the entire project?ĭon’t feel obligated to translate all your code into Swift. If you did not see the prompt, or accidentally deleted your bridging header, add a new. swift file to the project, you’ll likely be hit with a prompt that looks like this: You won’t create a header file Xcode generates a header automatically in case you need to reference it. Everything from your interface and implementation goes directly into this single Swift file. Because you can’t subclass Swift classes in Objective-C, it’s best to choose a class in your app that doesn’t have any subclasses. The most effective approach for migrating code to Swift is on a per-file basis-that is, one class at a time. To use the modern Objective-C converter, choose Edit → Refactor → Convert to Modern Objective-C Syntax.
Make sure to manually review and confirm any changes the converter offers to make to your code. For example, it won’t detect that your -toggle method is an action that affects your object’s state, and it will erroneously offer to modernize this action to be amake it a property. Although the converter helps with the mechanics of identifying and applying potential modernizations, it doesn’t interpret the semantics of your code. Xcode provides a modern Objective-C converter that can assist you during the modernization process. Preparing Your Objective-C Code for Migration Use these tools to explore Swift’s extensive functionality and integrate it back into your existing Objective-C app without having to rewrite the entire app in Swift at once. Interoperability makes it possible to integrate the converted code back into the an Objective-C project with no hassle. Swiftify simplifies the process of translating the syntax from Objective-C to Swift.
#Swiftify review plus#
For a straightforward, incremental migration of an app, you ’ll be using Swiftify (in particular, the Swiftify Xcode & Finder Extension) plus interoperability (available natively in Xcode).
Migration provides an opportunity to revisit an existing Objective-C app and improve its architecture, logic, and performance by replacing pieces of it in with Swift.
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