Update 10/4/2024: It appears in Xcode 15.3 nothing special is required and can use await right next to the hello world print. TLDR: add @main and rename main.swift To create a command line tool in Xcode 14.3 that uses async/await there are a few tweaks required. When we create the Read more…
Always wondered why NSFetchedResultsChangeUpdate is so buggy? The reason is Apple don’t actually use it in their own apps. Instead, what they do is have a UITableViewCell subclass with a custom property setter for the object where they add KVO for only the properties they are interested in updates to, Read more…
Sometimes when compiling more sophisticated iOS projects you need the IOKit headers which were removed from the iOS SDK a few versions ago. A simple workaround is to copy them from the Mac OS SDK to the iOS SDK with these commands: sudo cp -r /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/IOKit.framework/Versions/A/Headers /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/IOKit.framework Sometimes you also need OSTypes.h from Read more…
This post is about my Stack Overflow answer. In Xcode, Window->Devices, choosing a device and clicking the up arrow in the bottom bar brings up the console and this traditionally allowed you to view output from your app when not running in the debugger, e.g. for testing background launching behaviour. Unfortunately as of Read more…
Some of the new iOS 10 features contain link-time checks, that is they are only enabled if the app was linked to the iOS 10 SDK. When working on an open source library it is necessary to debug when linked to an older SDK, e.g. iOS 9.3, on a newer device iOS, Read more…
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