I just read up a bit on io_uring, prompted by a Swift Forums thread relating to it, and it made me laugh. To a lot of people it’s an amazing new[ish] high-performance I/O system for Linux. Which it is (albeit with some serious security concerns, apparently). A lot of people are very excited by it.… Read more
Failed to get a sandbox extension Right from there, you know you’re going to have a bad day. 😔 Then you try to actually use the file dropped on your app, and you get: Upload preparation for claim 1C0F9013-4DEB-4E5D-8896-F522AA979BA6 completed with error: Error Domain=NSCocoaErrorDomain Code=513 ““Example.jpg” couldn’t be copied because you don’t have permission to… Read more
ContentsBaseline: XcodeCommon limitation: no Light/Dark mode supportThe contestantsCode Block ProPerformanceProsConsCodeColorerPerformanceCode Syntax BlockPerformanceProsConsEnlighterPerformanceProsConsHighlighting Code BlockPerformanceProsConsPrismaticSyntax-highlighting Code Block (with Server-side Rendering)PerformanceProsConsSyntaxHighlighter EvolvedPerformanceProsConsUrvanov Syntax HighlighterPerformanceProsConsThe winnerWhat are other websites using? The built-in “code” block for WordPress (the CMS I use for this site) is virtually useless – it’s just a <pre> block, essentially. The appearance may vary depending… Read more
I’ve been exploring SwiftData lately, and I’ve been unpleasantly surprised by how many sharp edges it has. I’m going to try to describe some of them here, so that hopefully others can avoid them (or perhaps be dissuaded from using SwiftData to begin with). I’m using Xcode 15.0.1 (Swift 5.9) on macOS 14.1 (Sonoma). Background… Read more
Swift’s Collection and Sequence protocols provide two primary ways to enumerate (filter, map, reduce, etc): functional-style and imperatively. For example: Or: Nominally these are equivalent – they’ll produce the same results for all correctly-implemented Collections and Sequences. So in principle which you use is purely a matter of stylistic preference. But is it? Do they… Read more
I only just learned that the venerable basename and dirname are no longer necessary, let-alone the horrible string splitting required for teasing apart names from file extensions. Zsh has some awesomely convenient expansion modifiers which do it all! e.g. given the path “/Users/me/Documents/Work.zip”: $file:t → Work.zip $file:h → /Users/me/Documents $file:r → /Users/me/Documents/Work $file:e → zip… Read more
Apple “Feedback” #12149764. According to man 3 getifaddrs: The ifa_dstaddr field references the destination address on a P2P interface, if one exists, otherwise it contains the broadcast address. In my testing the ifa_dstaddr field is never non-null. I’m not sure I have any suitably configured P2P interfaces, but I definitely have interfaces with broadcast capabilities… Read more