“Import from iPhone or iPad” doesn’t work when any view contains a SwiftUI Toggle

Screenshot of the File menu with the "Import from iPhone or iPad" submenu expanded, and all items therein are disabled.

This is a public reposting of FB14893699, in case it’s helpful to anyone else or especially in case someone else has seen this too and knows how to work around it. If any view in the [active] window contains a Toggle – even one that’s disabled or hidden – then Continuity Camera (re. ImportFromDevicesCommands and… Read more

NSPasteboard crashes due to unsafe, internal concurrent memory mutation when handling file promises

This is a public reposting of FB14885505, in case it’s helpful to anyone else or especially in case someone else has seen this too and knows how to work around it. NSPasteboard mutates itself simultaneously from the main thread and the global concurrent Dispatch pool, w.r.t. to its internal type cache. This is surprisingly trivial… Read more

The only usable ByteCountFormatStyle is decimal

Swift makes it relatively easy to format numbers as byte counts, with appropriate suffixes to indicate units and generally sensible auto-selection of scale factors. e.g.: 1 kB (in English – results may vary depending on locale) This is just a small subset of Swift’s FormatStyle-based formatting capabilities, with which I have a bit of a… Read more

Matching prefixes in Swift strings

How do you determine if one string starts with another, in Swift? Surely that’s exactly what the hasPrefix(_:) method is for: No can haz etiquette? Wot? The problem is that hasPrefix is not meant for general use with human text; it’s barely better than a byte-wise comparison. It only guarantees that it won’t be fooled… Read more

getBitmapDataPlanes can break NSImages & NSBitmapImageReps

Opaque black square.

Today was one of those days where you plan to real make a dent in your todo list, and end up spending the entire day debugging why the hell some images are suddenly rendering as completely opaque black. Long story short, on at least some bitmap images, as soon as you call getBitmapDataPlanes it somehow… Read more