Xcode 26.4 quietly removed the ability to run app-hosted unit tests against physical iOS 16 devices, and Xcode 27 finally added a Delete Derived Data menu item — which the community correctly read as Apple admitting the IDE corrupts its own caches on a regular basis. Between those two announcements is the entire reality of…
How to survive Xcode 26 and 27 regressions: IB gutters, beta-OS crashes, AI pane, and orphaned simulators
Xcode 26.4 silently broke Interface Builder for Objective-C projects. Xcode 26 crashes with EXC_BAD_ACCESS the moment you launch onto an iOS 27 beta device. Xcode 27’s new Coding Assistant opens conversations in a floating window instead of next to your code. And nobody’s Mac can delete the 9–85 GB of orphaned simulator runtime sitting under…
How to Setup Xcode 13 Server for macOS Development
Continuous testing is paramount to ship serous software. Yet continuously running tests is a pensive productivity plight. Is it possible to automate testing? Yes you can.
How to Automate macOS Application Notarization
Notarization may take just a few clicks in Xcode, but this takes time and a security risk. You include notarization as part of your continuous delivery pipeline. Here’s how.
What can be Notarized for Developer ID Distribution?
Distributing binaries for macOS outside the App Store requires registering it with Apple beforehand—notarizing it. But do you know what can be submitted for notarization?
Python Pillow’s Denial of Service Vulnerability
A popular image processing library has a vulnerability that can cause denial of service by a maliciously-crafted file causing the application to consume too much memory. Should you upgrade or is there another solution?
How to Securely Provide Apple ID Password into Notarization Build Jobs
Including passwords into the source tree is a big security breach. Similarly including passwords into build jobs would be insecure. Learn how to securely provide Apple ID credentials into notarization jobs.
How to Detect Apple Silicon and Rosetta from within a Shell Script
Compiled code can conclude the instruction set through conditional compilation. But what about processor-independent scripts? Finding out the current native processor architecture and emulation status thereof would be very useful in build systems that doesn’t support cross-compilations. Find out how a shell script can find out whether it is running under Apple’s processor, Intel, or emulated.
How to Run Legacy Command Line Apps on Apple Silicon
Being in the “bleeding edge” has its drawbacks in addition to benefits. Blazing a fresh trail means it’s more rough and plenty of unknowns. Similarly in open source software, support for the ARM architecture is slim and even slimmer on the Mac. But there is a way to run “legacy” Intel-only command line apps on the Mac.
How to Program iOS on iOS
“Do I need a Mac to program iOS?” – for a long time there is only one answer: “Yes”. But this is no longer true, as there are many ways to program iOS – including on itself. Yes, you can make apps on the device itself. Read this article to find out how.
Selecting iTunes Provider for Notarization
When your Apple ID is also used for as a publisher for Apple Books or Apple Music, you may hit a snag when trying to notarize your Developer ID application. Here is how to fix it.
Invalid Bundle Identifier Error at Notarization
Notarizing your app? Make sure you name your bundles correctly beforehand. This includes the main app, extensions, and any sub-bundles inside it.
Architecting a Scalable Web Application
Writing a web app is one thing. Deploying it on the global Internet for millions of users is another thing. Keeping it secure from prying eyes, competitors, and general baddies is yet another challenge. How can you do all of this in a startup where there are a billion of other things in your head beyond running a site?
Graphic Design Tools that Developers Use
As a developer often you would need to create visuals for others to use. Whether it’s to explain ideas, to inform colleagues, or maybe to include in the software itself. Here is a comparison of the two graphics packages that I use as a developer and content creator.