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APFS Snapshots of the Big Sur System Volume

dinsdag 14 juli 2020 inMichael Tsai (Column-Blog)

Jeff Johnson: Yesterday I updated from Big Sur beta 1 to beta 2, which went smoothly except for the fact that the update doubled the size of my read-only system volume to over 27 GB, which didn’t leave me enough free space on the partitioned externa…

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SwiftUI for Mac on Big Sur

dinsdag 14 juli 2020 inMichael Tsai (Column-Blog)

Sarah Reichelt: After a lot of testing, several days of frustration and help from Jordan Singer with his mail-swiftui-sample project, I was finally able to work this out. The difference is that the initial view has to specify what comes next as well…

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iOS 14 Pasteboard Notifications

dinsdag 14 juli 2020 inMichael Tsai (Column-Blog)

an0: If you thought the new API -[UIPasteboard detectValuesForPatterns:completionHandler:] on iOS 14 is designed to avoid privacy alerts when accessing pasteboard, no, it is not. It still triggers privacy alerts. […] Testing result in beta 1: even i…

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The WWDC Format

dinsdag 14 juli 2020 inMichael Tsai (Column-Blog)

Benjamin Mayo: The technical sessions were also all pre-recorded this year … and they should keep them that way. It was brilliant. The seminar format conveyed the information with more detail and more clarity. For learning materials, that’s exactly …

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Another Facebook SDK Crash

maandag 13 juli 2020 inMichael Tsai (Column-Blog)

John Sundell (also: Hacker News): Facebook’s SDK is once again causing numerous iOS apps to crash on launch. Here are some of the GitHub issues. It seems like another case of a server change causing an unexpected JSON value to be returned. Jumhyn: T…

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Implicit Capturing of Self in Swift 5.3

maandag 13 juli 2020 inMichael Tsai (Column-Blog)

John Sundell: In Swift 5.3, however, using self in the above kind of situation is no longer required, and we can simply access properties and methods belonging to value types (such as SwiftUI views, or any other type of struct) without any additiona…

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The Raison d’Être for the App Store

vrijdag 10 juli 2020 inMichael Tsai (Column-Blog)

John Gruber (tweet, Hacker News): Feel free to file Google’s release this week of an update to their iPad Gmail app with support for split-screen multitasking under “better late than never”, but this is so late it borders on the absurd. […] I worry …

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VMware Fusion Tech Preview for Big Sur

donderdag 9 juli 2020 inMichael Tsai (Column-Blog)

Michael Roy (tweet): Big Sur brings with it some really big visual changes, but also major changes under the hood. For instance, Apple has been progressively deprecating 3rd party Kernel Extensions or “kexts” which Fusion needs to run VMs and contai…

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How to Decode Apple Version and Build Numbers

donderdag 9 juli 2020 inMichael Tsai (Column-Blog)

David Shayer: An Apple build number also has three parts: Major version: Within Apple, the major version is called the build train. Minor version: For iOS and its descendants, the minor version tracks with the minor release; for macOS, it tracks wit…

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Clip 1.0

donderdag 9 juli 2020 inMichael Tsai (Column-Blog)

Riley Testut: Clip is a clipboard manager for iOS that can run in the background indefinitely, listening for changes to the clipboard and saving your clippings for later use. Normally this would be impossible without jailbreaking, but Clip uses seve…

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Making a Best in Class iOS App

woensdag 8 juli 2020 inMichael Tsai (Column-Blog)

Jordan Morgan (tweet): What things can I quantify that help make an app great? I believe I’ve created such a list that helps answer that question. Yours might look different, but this one is mine. It attempts to takes all of the emotion and (mostly)…

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Is WebKit Sabotaging the Future of the Open Web?

woensdag 8 juli 2020 inMichael Tsai (Column-Blog)

WebKit: WebKit’s first line of defense against fingerprinting is to not implement web features which increase fingerprintability and offer no safe way to protect the user. Here are some examples of features we have decided to not implement in part d…

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Apple Silicon and Virtualization

woensdag 8 juli 2020 inMichael Tsai (Column-Blog)

bmalehorn (via Hacker News, Reddit): Why can’t you update the Docker image to also support ARM? You theoretically could switch your backend to run ARM Linux. However, this would take months - renting out ARM instances, re-building all repositories, …

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What Changes Might Be Coming to New Mac Hardware?

dinsdag 7 juli 2020 inMichael Tsai (Column-Blog)

Jason Snell: When the Intel transition happened, Apple was extremely restrained. The first Intel Macs were more or less the existing PowerPC Macs, but with Intel processors inside. The message was clear: Steady as she goes, no need to be concerned, …

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Visual Comparison of macOS Catalina and Big Sur

maandag 6 juli 2020 inMichael Tsai (Column-Blog)

Andrew Denty: All of the screenshots below are taken on a default install of macOS and the Catalina version is always on the left. I made a conscious effort not to resize any windows or change any default settings. I haven’t captured everything, but…

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H.266/Versatile Video Coding (VVC)

maandag 6 juli 2020 inMichael Tsai (Column-Blog)

Fraunhofer HHI (via Hacker News): This new standard offers improved compression, which reduces data requirements by around 50% of the bit rate relative to the previous standard H.265/High Efficiency Video Coding (HEVC) without compromising visual qu…

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AirPods Pro: Rattlegate

maandag 6 juli 2020 inMichael Tsai (Column-Blog)

MacRumorsRanger: So there appears to be a widespread issue with the AirPods Pro: they seem to eventually develop a rattling noise when Noise Cancellation or Transparency is in use. It is believed to be a hardware problem at this stage and fairly wid…

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AirPods vs. AirPods Pro

maandag 6 juli 2020 inMichael Tsai (Column-Blog)

Adam Engst: Wearing the AirPods Pro doesn’t hurt, but I notice them constantly and breathe a sigh of relief every time I take them out. […] I’m torn here—the AirPods Pro have significantly more flexible controls than the AirPods, but they require mo…

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Optimizing the Objective-C Runtime in Big Sur

maandag 6 juli 2020 inMichael Tsai (Column-Blog)

WWDC 2020: Dive into the microscopic world of low-level bits and bytes that underlie every Objective-C and Swift class. Find out how recent changes to internal data structures, method lists, and tagged pointers provide better performance and lower m…

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mount_apfs TCC Bypass and Privilege Escalation

vrijdag 3 juli 2020 inMichael Tsai (Column-Blog)

Csaba Fitzl (tweet): We could mount the entire file system through APFS snapshots as read-only, with the noowners flag, which enables us accessing (almost) every file in the file system, including data (documents, files, etc…) of every user on the s…

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Big Sur’s Narrow Alerts

vrijdag 3 juli 2020 inMichael Tsai (Column-Blog)

Craig Hockenberry: Why do I have this huge ass screen on my Mac and am now reading alerts with four or five words in each line? Seems like a bad idea when a majority of Macs have a display with landscape orientation. Portrait makes sense on a phone,…

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