To understand this post, I highly recommend everyone to watch the WWDC 2022 - Link fast: Improve build and launch times and WWDC 2018 - Behind the Scenes of the Xcode Build Process. They’re of the best talks I’ve ever seen. This post covers some of the jargon and how it all comes together. And even though I love making puzzles, I’ll justify why I picked it as my cover....
This the first post of a series I’m doing on how to optimize your app’s binaries. The post is more of a high level intro. Depending on the action (build, run, test, profile, analyze, archive) of your scheme, the process will have all or some of the following steps: Dependency analysis What happens when you press build? So the first step is for the build system to take the build description, your Xcode project file....
I was using Xcode’s View Hierarchy and noticed this UITransitionView in my view hierarchy. ... UIWindow UITransitionView FooVC UITransitionView BarVC This was odd because I was expected a view hierarchy as such: ... UIWindow UITransitionView FooVC BarVC What made it more perplexing was that the canvas was showing things correct, but the View Hierarchy didn’t make sense. To be clear on jargon, the following is the name of each section of Apple’s view debugger:...
Download the sample project if you want. You don’t have to though. The project doesn’t even need to be ran. It’s just provided for context. I’m going to discuss two gotchas I hade with Xcode. For quite some time I thought a fix was coming, then I realized this is because I didn’t fully understand the difference between an interface (or protocol) with a concrete type. Find Call Hierarchy not working: Have you ever right clicked on a function -> Find -> Find Call Hierarchy, but then wondered why Xcode doesn’t show you where the function is getting called from?...