Use Your Loaf

Archives

2026

WWDC 2026 Viewing Guide

2025

Format Swift with a Git Commit Hook SwiftUI Custom URL Schemes iPhone 17 Screen Sizes Swift Default Value in String Interpolations Treating Warnings As Errors In Swift Packages Swift Raw Identifiers Swift Observations AsyncSequence for State Changes Approachable Concurrency in Swift Packages Adding Icon Composer icons to Xcode WWDC 2025 Viewing Guide Syncing TipKit with CloudKit SwiftUI Picker With Optional Selection SwiftData Predicates For Parent Relationships SwiftUI Label and Button Style View Modifiers SwiftUI Keyboard Shortcut Scope SwiftUI Accessibility Language SwiftUI Default Scroll Anchor Swift Testing Completion Handlers Tapping on Stack Views Provisional Authorization of User Notificatons SwiftUI Button Image When Pressed Reducing Motion of Animations Swift Parameterized Testing

2024

Migrating XCTest to Swift Testing SwiftUI Charts Plotting Functions Automatic Trait Tracking SwiftUI Self-Sizing Flow Layouts Conditional SwiftUI Accessibility Labels iPhone 16 Screen Sizes SwiftData Expressions SwiftUI Previewable Macro Disabling Xcode Asset Symbol Generation Entry Macro for Custom SwiftUI Environment Values SwiftData Indexes Swift Switch And If Expressions Xcode Explicitly Built Modules WWDC 2024 Viewing Guide iPad 2024 Screen Sizes SwiftUI Pie Charts Fetching OSLog Messages in Swift Xcode Bookmarks SwiftUI Inverting A Boolean Binding SwiftUI Tasks Blocking the MainActor Xcode Console and Unified Logging Disabling Core Data CloudKit Logging Getting Started With App Intents SwiftUI Button Styles And Shapes SwiftData Fetching Pending Changes

2023

SwiftData Deleting Data SwiftUI SplitView Compact Column Control Custom Traits and SwiftUI Registering For Trait Changes Content Unavailable Views Replacing IBDesignable with Xcode Previews UIKit View Lifecycle - viewIsAppearing iPhone 15 Screen Sizes Strict Concurrency Checking in Swift Packages SwiftUI Sensory Feedback SwiftData Fetching An Existing Object SwiftData Background Tasks MapKit for SwiftUI SwiftData Saving Changes SwiftUI onChange Deprecation Migrating to Observable WWDC23 Core Data Lab Notes WWDC23 SwiftData Lab Notes WWDC 2023 Viewing Guide Network Path Monitoring SwiftUI Importing And Exporting Files Accessing Security Scoped Files Using Swift Reflection Converting A Swift String To A Bool Custom Sort Comparators Context Menus for Tables SwiftUI Tables Quick Guide Xcode Multi-Cursor Editing iPad Customizable Toolbars Swift Package String Localization SwiftUI Toolbar Title Menus Renaming Toolbar Navigation Title SwiftUI ScrollViewProxy crash

2022

Swift Stride Quick Guide CloudKit Console Act As iCloud Account SwiftUI Dismissing The Keyboard SwiftUI Labeled Content SwiftUI Scrollable View Backgrounds SwiftUI Multi-line Text Fields SwiftUI gradients and shadow styles Xcode 14 Single Size App Icon SwiftUI View That Fits Aspect Fit Layout Guide iPhone 14 Screen Sizes Getting Started with Swift Regex Unit Test Setup And Teardown SwiftUI Gauges SwiftUI Split View Configuration WWDC22 Core Data Lab Notes What's New in Xcode 14 Previews Interface Builder Keyboard Layout Guide WWDC 2022 Viewing Guide Core Data Saving Changes Monospace Digits SwiftUI Supporting External Screens iOS Scene Delegates and External Screens Dismissing SwiftUI Views SwiftUI Adaptive Stack Views SwiftUI List Selection On iPad SwiftUI Confirmation Dialogs Adapting SwiftUI Label Style Async Core Data Testing SwiftUI Stack Custom Center Alignment VoiceOver For Frequently Updating Data Swift Foundation Formatter Improvements SortComparator and SortDescriptor Swift Optional Pattern Matching

2021

Using @SceneStorage With @FetchRequest SceneStorage For Custom Types Editing Multiple Constraints SwiftUI Environment When Presenting Views Accessibility Smart Invert Keyboard Layout Guide Xcode 13 Vary For Traits Inspecting HTTP Traffic With Instruments Safari 15 Theme Color iPhone 13 Screen Sizes iPad 2021 Screen Sizes Stack View Changes In iOS 15 Restricting Dynamic Type Sizes Button Configuration in iOS 15 Making SwiftUI Views Searchable Configuring SwiftUI Fetch Requests Scrolling With ScrollViewReader Xcode 13 Missing Info.plist SwiftUI Swipe Actions Testing Core Data In A Swift Package Xcode DocC - Getting Started Xcode Column Breakpoints WWDC 2021 Viewing Guide Xcode Keyboard Shortcuts Core Data In Memory Store Changing The Core Data Test Store Location XCTUnwrap Optionals In Your Tests Debugging Core Data SwiftUI Adaptive Stack View With Equal Distribution App Bound Domains The @ScaledMetric Property Wrapper Scaling Custom SwiftUI Fonts With Dynamic Type Tweaking The iOS System Fonts SwiftUI Custom Environment Values URLSessionConfiguration Quick Guide Xcode 12.5 Playground Access To App Types SwiftUI Container Relative Shape Widget Background and Accent Color SwiftUI Custom View Modifiers Using Swift Result and flatMap

2020

Swift If Case Let Creating dynamic dark mode images at runtime Showing Maps in Widgets Adding Views and Modifiers to the Xcode Library WidgetKit for iOS - Getting Started Slow Swift Compiler Performance iPhone 12 Screen Sizes Using Swift Packages in Playgrounds What does @main do in Swift 5.3? Launching iOS Apps with a Custom URL Scheme SwiftUI Preview Data Stack View Background Color in iOS 14 Dropping launch storyboards Sharing data with a Widget Default initializer is inaccessible Add resources to Swift packages Creating Lists with Collection View WWDC 2020 Viewing Guide Self-sizing Popovers Swift Filtering With Predicates Flipping and Localizing Image Assets Using @IBSegueAction with Tab Bar Controllers Xcode Previews for View Controllers Getting Started With Combine Overriding Dark Mode Supporting Dark Mode In WKWebView XCTest Error Handling Improvements Xcode Test Plans Adding Context Menus In iOS 13

2019

Cleaning Up With Swift Defer Hiding the Safe Area Layout Guide Self Sizing Table View Cells In Interface Builder Xcode 11 Git Stashing Xcode 11 environmental overrides Coercion of implicitly unwrappable value Testing App Launch Time Swift 5.1 Two Quick Tips Scroll View Layouts With Interface Builder Editing A Swift Package Creating Swift Packages in Xcode Xcode Source Control Accounts Better Storyboards with Xcode 11 Predicting Size Classes in iOS 13 WWDC 2019 Viewing Guide Exploring the Swift standard library source code Empty Strings in Swift Comparing Version Strings Using The Responder Chain Swift 5 Frozen enums State Restoration With Swift Structs Text Label vs Text Field vs Text View Self-sizing Child Views Creating Strings From Raw Text In Swift 5 Character Properties in Swift 5 Faster App Setup For Unit Tests Refactoring With Protocols

2018

UI Testing Quick Guide Handling System Alerts In UI Tests Xcode 10 Random And Parallel Tests Upside Down and Rotating iPhones Supporting New iPad Pro Models Variable Width Strings Announcing Modern Auto Layout Connecting Xcode To A Running Process Making Space For Dynamic Type Xcode 10 Library Tips Supporting iPhone XS Max and XR Adding Padding To A Stack View TODO FIXME And Compiler Directives Easier Scrolling With Layout Guides Getting All Cases Of An Enum Updating Strings For Swift 4.2 Readable Width Table Views With iOS 12 Upgrading To Swift 4.2 WWDC 2018 Viewing Guide Swift Lazy Property Initialization Class Only Protocols In Swift 4 Stack Views And Multi-Line Labels How To Get Equatable And Hashable For Free Table Swipe Actions Quick Guide To Property Animators More Interface Builder Tips And Tricks Replacing flatMap With compactMap Creating Custom Xcode Project Templates Masked And Animated Corners Swift Non-Nil Values In An Array Of Optionals

2017

Changing Xcode Header Comment Table View Separator Inset URLSession Waiting For Connectivity Swift Codable With Custom Dates Swift 4 Access Levels @objc Warnings Upgrading To Swift 4 Using Dynamic Type With Web Views Easier Swift Layout Priorities Updating Strings For Swift 4 Supporting iPhone X Xcode 9 Vector Images Using Swift Codable With Property Lists Using A Custom Font With Dynamic Type Avoiding Conflicts with System Gestures at Screen Edges Reminder About Let Initialization Changing Root View Layout Margins Stack View Custom Spacing Safe Area Layout Guide WWDC 2017 Viewing Guide Warning Converting Optional to String Stack View Baseline Alignment Issue Moving Core Data Files Interface Builder Tip for Margin Constraints Preserves Superview Layout Margins Adding Playgrounds to Xcode Projects Stack View Background Color Loading Resources From A Framework Variable Height Table View Header Extra Space When Embedding Table Views Container View Controllers Swift Integer Quick Guide Swift Hashable Swift Equatable and Comparable Cleaning up Core Data Fetch Requests Easier Core Data Setup with Persistent Containers Swift 3 and Comparing Optionals Core Data Code Generation

2016

Batch Updating of Constraints Stack View Constraint Conflicts When Hiding Views Refresh Control Changes in iOS 10 Fun With Date Calculations Adding Hardware Keyboard Shortcuts Completion Handlers as an Alternative to Delegation Local Notifications with iOS 10 Enum Raw Values and Failable Initializers Updating Strings for Swift 3 Split View Controller Display Modes Swift 3 Access Controls openURL Deprecated in iOS10 Adding Swift Convenience Initializers Auto Layout and Alignment Rectangles Use High Contrast For Legibility Objective-C Class Properties Swift 3 Warning of Unused Result Xcode Visual Memory Debugger Slow App Startup Times Pro Swift and Swift Algorithms Privacy Settings in iOS 10 Auto Adjusting Fonts for Dynamic Type WWDC 2016 Viewing Guide Using Objective-C Lightweight Generics Unregistering NSNotificationCenter Observers in iOS 9 Detecting low power mode New Swift, Core Data and Cocoa Books Swift Guide to Map Filter Reduce Readable Width of Table View Cells Static Tables and Dynamic Type Readable Content Guides Natural Text Alignment for RTL Languages Stretching, Redrawing and Positioning with contentMode Adapting Auto Layout Without Interface Builder Scrolling Stack Views Styling buttons using the Asset Catalog Goodbye Spacer Views Hello Layout Guides Pain Free Constraints with Layout Anchors Hiding empty table view rows Swift Documentation Quick Guide Adapting Images for Size Classes Proportional Spacing with Auto Layout Swift Named Parameters Using nullable to annotate Objective-C code How to percent encode a URL String

2015

Finding Non-localized Strings Swift String Cheat Sheet How to Dereference an Unsafe Mutable Pointer in Swift Making Popovers Adapt to Size Classes Split views and unexpected keyboards Swift Optional Protocol Methods Quick Guide to Swift Delegates Unwind segues as an alternative to delegation cellForRowAtIndexPath in Four Lines Creating scaled images with PDF Vectors 3D Touch Peek and Pop Adding 3D Touch Quick Actions Using Size Classes to Hide Stack View Contents Did ATS Change Since the GM? App Transport Security Querying URL Schemes with canOpenURL Xcode code coverage Checking API Availability with Swift Using Identifiers to Debug Autolayout Dynamic Dispatch and Whole Module Optimization A Size Class Reference Guide Swift Whole Module Optimization Refactoring with Storyboard References Using the Address Sanitizer Adapting Stack Views with Size Classes iOS 9 Proportional Numbers Easier Auto Layout with Stack Views iOS 9 Slide Over and Split View IB_DESIGNABLE Custom Views in Interface Builder UIScreen bounds in iOS 8 Change the Width of Master View in Split View Controller Animating Autolayout Constraints Sorting an Array of Dictionaries Default property attributes with ARC Search bar not showing without a scope bar Creating an OS X Core Data Helper App Useful OS X Resources for iOS Developers Updating to the iOS 8 Search Controller Stanford iOS 8 Course With Swift

2014

Using a Launch Screen Storyboard Modules and Precompiled Headers Continuous Integration With Xcode Server UIAlertController Changes in iOS 8 Open Settings URL Xcode 6 Objective-C Modernization Detecting Layout Problems with a Pseudolanguage Creating a CocoaPod Self Sizing Table View Cells iOS 8 Camera Privacy Settings Reset Location and Privacy Permissions iOS 8 Adds Hebrew Speech Synthesis iOS Core Animation Advanced Techniques Reading QR Codes Running Custom Clang Analyzer Builds Data Detection for Links Format String Issue Using NSInteger Effective Objective-C 2.0 Xcode Debugger Quick Look Enumerating Strings By Sentence Table View Cells with Varying Row Heights Larger Dynamic Type For Accessibility Synthesized Speech From Text Motion Effects

2013

Scaling Dynamic Type with Font Descriptors Supporting Dynamic Type Collection View Default Gestures UIPopover arrow not repositioned correctly on rotation Missing The Xcode Automatic Configuration Service Using Launch Arguments To Test Localizations Xcode Interface Builder Tips Migrating to the new Twitter search API UIRefreshControl Fun and Games WWDC Keynote 2013 Checking version and device when restoring state Restoration Classes and UIWebViews State Preservation and Restoration Bug Table View State Not Restored When Embedded In Navigation Controller Downloading Old iOS SDK Documentation Core Data by Marcus Zarra Xcode 4.6 Recommended Build Settings Apple Webpage Touch Icons Open With Menu Duplicates

2012

Supporting the 4-inch Retina Display Presenting View Controllers VoiceOver Bug and iOS 5 TableViews Revisited Prototype Table View Cells Not Working With VoiceOver Adding A Search Bar To A Table View With Storyboards Using Appearance Proxy To Style Apps Stop Xcode Automatic Termination Keeping Mountain Lion Awake Automatic Property Synthesis with Xcode 4.4 Formatters and Locale Changes Customizing Appearance With Resizable Images Storyboard Segues WWDC 2012 Session Videos Using Number Formatters iOS 6 WWDC Keynote Updates Compressing PNG Images Prototype Table Cells and Storyboards Making Xcode behave Making Some Changes Detecting VoiceOver Status Changes Programming iOS 5 by Matt Neuburg Static Table Views with Storyboards Xcode Balancing Brackets For Method Calls VoiceOver Accessibility Splitview controller is expected to have a master view controller Updating for iPad retina display Git branch management with Xcode Updating to Xcode 4.3 Remote Packet Capture for iOS devices Network Link Conditioner Core Data Queries Using Expressions Xcode 4.2 building for iOS 3.1.x and older devices UIStepper control

2011

UIAlertView changes in iOS 5 Creating Gesture Recognizers with Interface Builder Mail app style Split View Controller with a sliding master view Stanford iOS development course updated for iOS 5 Settings Radio Group Element Sync preference data with iCloud iOS 5 Split View Controller Changes Apple TV Update after running beta App Store notifications Stay Hungry. Stay Foolish iOS 5 apple event Disabling Clang Compiler Warnings Xcode 4 DerivedData and cleaning the build directory Book Recommendations iTunes Connect App Status Update Using UIActionSheet for external actions Using pattern images to set background views Printing Headers and Footers with a Print Page Renderer Basic Printing with AirPrint Xcode Project Modernization Hello Lion, Goodbye Xcode 3 Supporting older versions of iOS Passing Arguments with Xcode 4 Using Xcode 4 Refactor to rename a class GitHub for mac Thoughts on iOS 5 Remember to backup your keychain UYLPasswordManager clearing the cache Searching Twitter with iOS NSFileManager defaultManager is not thread safe iOS and Keychain Migration and Data Protection - Part 3 iOS and Keychain Migration and Data Protection - Part 2 iOS Keychain Migration and Data Protection - Part 1 Dealing with Failure in Objective-C initializers PragProg Rails Book Sale Localizing NIB files with Xcode 4 Use of properties by Xcode 4 templates Private ivars Stanford iOS App Development course Violating user privacy in mobile apps Objective-C Fundamentals Interface Builder Outlet Collections Upgrading to Xcode 4 Compiler Options in Xcode - GCC or LLVM? Xcode 4 is here and in the App Store! Using heapshots to find abandoned memory Xcode conditional breakpoints Speeding up table view cell loading with UINib Xcode breakpoint actions DRYing your instance variables Understanding your (Objective-C) self Xcode 4 GM seed Using the Mac OS X automounter iOS 4.3 beta iOS 4.2.5 and Xcode 4 Preview 6 App Store Whitespace Validation Failure with Xcode 3.2.5

2010

Creating iPhone Ad Hoc Distribution builds Localizing iPhone App Settings Strings Localizing iPhone App Icon is not supported Localize iPhone Application Name Ad inventory unavailable with iOS 4.2 iAd Framework updates for iOS 4.2 Xcode Unknown iOS detected Xcode 3.2.5 Base SDK iOS 4.2 is here Programming Ruby The PickAxe Book Checking RSS Feeds for New Posts Searching arrays with NSPredicate and blocks Parsing an RSS Feed using NSXMLParser Reading an RSS Feed Xcode Build and Analyze broken for simulator Swiping to delete rows from a table Dynamically loading new rows into a table Design Patterns in Ruby Adding Booleans to Objective-C Arrays and Dictionaries Apple Magic Trackpad Placing iAd banners at the top of a table view iOS SDK 4.2 Beta Objective C anonymous categories Repeating an iOS local notification Installing multiple Xcode versions iTunes 10 Toolbar Buttons Xcode and iOS Updates iTunes Connect App Status Popping Tabbed Navigation Controllers Setting iPhone Application Build Versions The version of iPhone OS is too old Apple iOS SDK 4.0.2 and 3.2.2 Reachability Updates Checking network connectivity when displaying iPhone iAds Application Icon Troubles Adding Local Notifications with iOS 4 Filtering arrays with NSPredicate Xcode 4 developer preview now open to all developers iPhone Analytics Updates and News iPad table backgroundView Signing up for iAds Juggling iOS versions iOS SDK 4.1 beta Adding iAds to an application in an afternoon More on Validate Built Product Flurry SDK 2.5 Issues Tracking background memory usage of iOS 4 apps Adding iOS4 Multitasking Support All new App Store submissions must be with iOS 4 Updating for the iPhone 4 retinal display This copy of iTunes will expire Missing wallpapers when using iOS4 GM build Xcode 3.2.3 Instant Setup iAd Privacy Policy Symbol not found errors in universal apps Xcode 3.2.3 and iOS 4 SDK released Requesting a new development certificate WWDC2010 Videos now available in iTunes Using an image for the UISplitViewController popover button Flurry to release new SDK next week to comply with 3.3.9 Xcode 4 on the way Delegation or Notification What To Do About Analytics Now? Automatically Running Unit Tests Renewing provisioning profiles Git Cheat Sheet Cocoa Design Patterns Unit Testing with OCUnit Managing User Preferences within an iPhone App Adding a settings bundle to an iPhone App Selecting images in Universal apps Testing universal app for iPhone Jakob Nielsen on iPad Usability Fixing Xcode default development region Conditional compilation for debug or distribution builds Which iPhone OS Version should your app support Formatting source code when posting with MarsEdit 3 iPad Gestures iPad Modal View Controllers Keychain duplicate item when adding password Converting to a Universal App (Part III) Xcode Build Active Architecture Only Converting to a Universal App (Part II) The future of analytics on the iPhone Finally a reason to buy a magic mouse? Cocoa Factory Classes and Autorelease Cocoa Naming Conventions for Memory Allocation Xcode localization frustrations Setting Xcode build version to Git commit name As one NDA departs another arrives Final goodbye to Subversion Universal apps get higher billing in iTunes Converting to a Universal App (Part I) Universal apps or iPad HD Application icon and image files Archiving builds with Xcode Organizer Xcode 3.2.2 Validate Built Product The iPad NDA is finally lifted Keychain group access Simple iPhone Keychain Access Using categories with private methods Using categories with core data AirMail Push Notifications Multiple Xcode targets and info.plist Downloading iPhone app data with the organizer Code signing error CSSMERR_DL_MISSING_VALUE NSFetchedResultsController and sort performance Finding memory leaks in Xcode Debugging core data on the iPhone