Douglas Hill

@douglashill.co

1472 Followers 59 Following

Software engineer at Nutrient (previously known as PSPDFKit) and a former NSLondon organiser. Mostly near London or Innsbruck. Find me ice skating, wakeboarding, skiing or snowboarding. he/him

Speaker card: Douglas Hill; Rust for iOS developers: more Swifty than Swift; iOSDevUK; 7th to 10th September 2026; Aberystwyth University; www.iosdevuk.com
protocol ContactItemEnumerating: A protocol to provide enumerators for collections of contact items. protocol ContactItemEnumerator: A protocol to provide enumerations of all contact items and changed contact items.
Screenshot of macOS volume change notification showing the title External Headphones
iPhone mini simulator home screen screenshot showing a red status bar showing only the text “😳 rdar:45025538”
Screenshot of Vivaldi browser showing suggestions in Nutrient API documentation search: beta, aiassistantview, scope, aiassistantbutton, changetag, v1/betaGroups/{id}/relations
Screenshot of alert from Xcode: The file
Photo during Peter Friese’s talk — Have Your Cake and Eat It Too: Hybrid AI with Apple Intelligence and Firebase AI Logic
Screenshot of a GitHub pull request. Title: Remove Default-568h@2x.png. Commits: 1. Files changed: 4. Comment: You used to have to add these files to support the iPhone 5. Remember that?
Photo of Adam on stage at the conference with some guy sketchnoting on screen behind.
Photo of snow on mountains with ski runs and lifts. Rocky ground not covered with snow in places. Blue sky above.
Photo of spines of two books: Dinner by Meera Sodha on top of East by Meera Sodha
Hi Douglas, You purchased Norway and we're super excited to hear what you think! Sharing your experience means a lot to us and will help others choose the right products for them.
Screenshot of asking Siri “Hey Siri how many days is it from the 12th of January 2025 to the 28th of January 2025” with reply “2025 to the power of 28 is approximately equal to 3.8 times 10 to the power of 92”
Screenshot of Apple’s anticompetitive store showing four app screenshots all in a portrait size even though three of the screnshots were taken in landscape, so they’re sideways.
Screenshot of end of Mac menu bar. Popup from camera icon says “Turn On Reactions: Zoom has turned off Reaction effects. Click camera icon and select Reactions to add more impact to your gestures.”
Screenshot showing a list of Acorn versions from 2 to 8
Screenshot of Xcode find navigator. Find › Text › Containing “// Created by” In iOS SDK. 41 results in 41 files. MXCrashDiagnosticObjectiveCExceptionReason.h iOS 18.2.
Screenshot of code commit showing added code “guard _article !== oldValue else { return }” with comment on the line below “This same code path is used for updates so it’s important not to return early if the new article is identical to the old article.”.
Photo of people attending talk. Slides show “The Epiphanies of Advent of Code”, “Abizer Nasir”, “abizern.dev”.
Screenshot of Instagram website showing a reCAPTACHA with the message “Error: Sorry, there was a problem. Please try again.”
Screenshot of Nintendo Music app on iPad showing Main Theme (Wii Shop Channel)
Screenshot of Mac alert: Claquette is requesting bypass the system private window picker and direct access your screen and audio
File Extensions: Show Listed: gif, icns, jpeg, jpg, png, tiff, plist, strings, stringsdict, entitlements, bundle, html, htm, xcconfig, sh, zip
Screenshot of iOS Settings app showing iOS 18 in the main area and at the bottom “Also Available: Upgrade to iOS 18”
Alert asking: Allow “Save File” to access your “Desktop” folder?
Photo of Douglas on stage at iOSDevUK
Close up photo of a green shield bug on concrete
Screenshot of App Store Connect website for the PDF Viewer app. What's New in This Version for visionOS App Version 2024.10: Testing the Vision metadata upload using fastlane!
Photo of sandy beach with people in the sea
Screenshot of iPad TV app showing genres: Action & Adventure, Comedy, Drama, Foreign, Horror, Independent, Kids & Family, Romance, Sci-Fi & Fantasy, Thriller
Screenshot of iPad Shortcuts app with the following steps: Comment: “While ‘Delete folder if empty’ does in fact delete the folder, the ‘Run Shortcut’ action then fails with ‘Couldn’t communicate with a helper application’, which prevents *this* shortcut from running further. Therefore disable this cleanup. (It’s also annoying having to confirm the deletion every time.)”; Text: “false”; Set variable “Enable Empty Folder Cleanup” to “Text”; If “Enable Empty Folder Cleanup” “is” “true”; Get file from “Content” at path “Path/”; If “File” “has any value”; Run “Delete folder if empty”; End If; End If
Screenshot from App Store Connect website showing $10.0M proceeds, up more than 999%, last 24 Hours, Apr 10 - 11, 2024
Snowy mountain photo with a ski run in the foreground, blue sky, and clouds between the peaks further away.
Screenshot showing a thumbnail grid of pages in a magazine in an Apple Vision Pro window in a museum.
Screenshot of PDF Viewer app on Apple Vision Pro simulator with a document view settings open over a single sepia page of text
Screenshot of PDF Viewer app on Apple Vision Pro simulator with a document outline open over a double page spread showing snowy hills
Screenshot showing looking at tickets from Bari Centrale to Rimini on the Trainline website, with an ad for Trainline with the text “Trains all over Europe? Totally.”
Screenshot showing iPad text replacement settings with Phrase “Apple Vision Pro” and Shortcut “vp”
Photo of a plate filled with sugar dusted double-layer cookies.
Screenshot of Apple webpage highlighting the text “Don’t break Apple Vision Pro over two lines.” and further down showing that same text split over two lines.
Photo of ten rice balls, each wrapped in a band of nori seaweed.
Close-up photo of mince pies with star shaped pastry top on a cooling rack.
Photo from hilltop with trees in foreground and mist illuminated by the sunset covering the distance. The sun is low and orange on the right.
Photo of frosted trees in bracken with a very misty sunset view beyond
Photo of ramen bowl with chicken, eggs, spring onions, daikon and nori
Screenshot of Bluesky app showing alert: Potentially Misleading Link; This link is taking you to the following website:; https://bsky.app/profile/douglashill.co; Make sure this is where you intend to go; Visit Site; Cancel