Archives

2022

May 23	Core Data Saving Changes
May 09	Monospace Digits
May 02	SwiftUI Supporting External Screens
Apr 25	iOS Scene Delegates and External Screens
Apr 11	Dismissing SwiftUI Views
Apr 04	SwiftUI Adaptive Stack Views
Mar 21	SwiftUI List Selection On iPad
Mar 14	SwiftUI Confirmation Dialogs
Mar 07	Adapting SwiftUI Label Style
Feb 28	Async Core Data Testing
Feb 14	SwiftUI Stack Custom Center Alignment
Feb 07	VoiceOver For Frequently Updating Data
Jan 24	Swift Foundation Formatter Improvements
Jan 17	SortComparator and SortDescriptor
Jan 10	Swift Optional Pattern Matching

2021

Dec 20	Using @SceneStorage With @FetchRequest
Dec 13	SceneStorage For Custom Types
Nov 29	Editing Multiple Constraints
Nov 22	SwiftUI Environment When Presenting Views
Nov 08	Accessibility Smart Invert
Nov 01	Keyboard Layout Guide
Oct 18	Xcode 13 Vary For Traits
Oct 11	Inspecting HTTP Traffic With Instruments
Sep 27	Safari 15 Theme Color
Sep 20	iPhone 13 Screen Sizes
Sep 17	iPad 2021 Screen Sizes
Sep 13	Stack View Changes In iOS 15
Sep 06	Restricting Dynamic Type Sizes
Aug 30	Button Configuration in iOS 15
Aug 16	Making SwiftUI Views Searchable
Aug 09	Configuring SwiftUI Fetch Requests
Aug 02	Scrolling With ScrollViewReader
Jul 26	Xcode 13 Missing Info.plist
Jul 19	SwiftUI Swipe Actions
Jul 12	Testing Core Data In A Swift Package
Jun 28	Xcode DocC - Getting Started
Jun 21	Xcode Column Breakpoints
Jun 14	WWDC 2021 Viewing Guide
May 31	Xcode Keyboard Shortcuts
May 24	Core Data In Memory Store
May 10	Changing The Core Data Test Store Location
May 03	XCTUnwrap Optionals In Your Tests
Apr 26	Debugging Core Data
Apr 12	SwiftUI Adaptive Stack View With Equal Distribution
Apr 05	App Bound Domains
Mar 29	The @ScaledMetric Property Wrapper
Mar 22	Scaling Custom SwiftUI Fonts With Dynamic Type
Mar 08	Tweaking The iOS System Fonts
Mar 01	SwiftUI Custom Environment Values
Feb 15	URLSessionConfiguration Quick Guide
Feb 08	Xcode 12.5 Playground Access To App Types
Feb 01	SwiftUI Container Relative Shape
Jan 25	Widget Background and Accent Color
Jan 18	SwiftUI Custom View Modifiers
Jan 04	Using Swift Result and flatMap

2020

Dec 21	Swift If Case Let
Dec 14	Creating dynamic dark mode images at runtime
Dec 07	Showing Maps in Widgets
Nov 30	Adding Views and Modifiers to the Xcode Library
Nov 23	WidgetKit for iOS - Getting Started
Nov 09	Slow Swift Compiler Performance
Oct 19	iPhone 12 Screen Sizes
Oct 12	Using Swift Packages in Playgrounds
Sep 28	What does @main do in Swift 5.3?
Sep 21	Launching iOS Apps with a Custom URL Scheme
Aug 31	SwiftUI Preview Data
Aug 17	Stack View Background Color in iOS 14
Aug 10	Dropping launch storyboards
Aug 03	Sharing data with a Widget
Jul 27	Default initializer is inaccessible
Jul 20	Add resources to Swift packages
Jul 06	Creating Lists with Collection View
Jun 29	WWDC 2020 Viewing Guide
May 18	Self-sizing Popovers
May 11	Swift Filtering With Predicates
May 04	Flipping and Localizing Image Assets
Apr 13	Using @IBSegueAction with Tab Bar Controllers
Apr 06	Xcode Previews for View Controllers
Mar 23	Getting Started With Combine
Mar 09	Overriding Dark Mode
Feb 24	Supporting Dark Mode In WKWebView
Feb 17	XCTest Error Handling Improvements
Jan 27	Xcode Test Plans
Jan 06	Adding Context Menus In iOS 13

2019

Dec 16	Cleaning Up With Swift Defer
Dec 09	Hiding the Safe Area Layout Guide
Dec 02	Self Sizing Table View Cells In Interface Builder
Nov 18	Xcode 11 Git Stashing
Nov 11	Xcode 11 environmental overrides
Nov 04	Coercion of implicitly unwrappable value
Oct 28	Testing App Launch Time
Oct 07	Swift 5.1 Two Quick Tips
Sep 16	Scroll View Layouts With Interface Builder
Aug 19	Editing A Swift Package
Aug 12	Creating Swift Packages in Xcode
Aug 05	Xcode Source Control Accounts
Jul 15	Better Storyboards with Xcode 11
Jul 01	Predicting Size Classes in iOS 13
Jun 10	WWDC 2019 Viewing Guide
May 27	Exploring the Swift standard library source code
May 20	Empty Strings in Swift
May 06	Comparing Version Strings
Apr 22	Using The Responder Chain
Apr 08	Swift 5 Frozen enums
Apr 01	State Restoration With Swift Structs
Mar 25	Text Label vs Text Field vs Text View
Mar 11	Self-sizing Child Views
Feb 11	Creating Strings From Raw Text In Swift 5
Feb 04	Character Properties in Swift 5
Jan 28	Faster App Setup For Unit Tests
Jan 21	Refactoring With Protocols

2018

Dec 31	UI Testing Quick Guide
Dec 10	Handling System Alerts In UI Tests
Dec 03	Xcode 10 Random And Parallel Tests
Nov 12	Upside Down and Rotating iPhones
Nov 04	Supporting New iPad Pro Models
Oct 29	Variable Width Strings
Oct 23	Announcing Modern Auto Layout
Oct 15	Connecting Xcode To A Running Process
Oct 08	Making Space For Dynamic Type
Sep 24	Xcode 10 Library Tips
Sep 17	Supporting iPhone XS Max and XR
Sep 10	Adding Padding To A Stack View
Sep 03	TODO FIXME And Compiler Directives
Aug 20	Easier Scrolling With Layout Guides
Aug 06	Getting All Cases Of An Enum
Jul 23	Updating Strings For Swift 4.2
Jul 09	Readable Width Table Views With iOS 12
Jun 25	Upgrading To Swift 4.2
Jun 11	WWDC 2018 Viewing Guide
May 21	Swift Lazy Property Initialization
Apr 30	Class Only Protocols In Swift 4
Apr 16	Stack Views And Multi-Line Labels
Apr 02	How To Get Equatable And Hashable For Free
Mar 19	Table Swipe Actions
Mar 04	Quick Guide To Property Animators
Feb 19	More Interface Builder Tips And Tricks
Feb 12	Replacing flatMap With compactMap
Jan 29	Creating Custom Xcode Project Templates
Jan 22	Masked And Animated Corners
Jan 08	Swift Non-Nil Values In An Array Of Optionals

2017

Dec 18	Changing Xcode Header Comment
Dec 11	Table View Separator Inset
Nov 27	URLSession Waiting For Connectivity
Nov 20	Swift Codable With Custom Dates
Nov 06	Swift 4 Access Levels
Oct 26	@objc Warnings Upgrading To Swift 4
Oct 16	Using Dynamic Type With Web Views
Oct 02	Easier Swift Layout Priorities
Sep 25	Updating Strings For Swift 4
Sep 18	Supporting iPhone X
Sep 11	Xcode 9 Vector Images
Aug 21	Using Swift Codable With Property Lists
Aug 14	Using A Custom Font With Dynamic Type
Jul 31	Avoiding Conflicts with System Gestures at Screen Edges
Jul 24	Reminder About Let Initialization
Jul 17	Changing Root View Layout Margins
Jul 03	Stack View Custom Spacing
Jun 26	Safe Area Layout Guide
Jun 12	WWDC 2017 Viewing Guide
May 29	Warning Converting Optional to String
May 22	Stack View Baseline Alignment Issue
May 15	Moving Core Data Files
May 08	Interface Builder Tip for Margin Constraints
May 01	Preserves Superview Layout Margins
Apr 24	Adding Playgrounds to Xcode Projects
Apr 03	Stack View Background Color
Mar 27	Loading Resources From A Framework
Mar 20	Variable Height Table View Header
Mar 13	Extra Space When Embedding Table Views
Feb 27	Container View Controllers
Feb 20	Swift Integer Quick Guide
Feb 13	Swift Hashable
Feb 06	Swift Equatable and Comparable
Jan 30	Cleaning up Core Data Fetch Requests
Jan 16	Easier Core Data Setup with Persistent Containers
Jan 09	Swift 3 and Comparing Optionals
Jan 02	Core Data Code Generation

2016

Dec 12	Batch Updating of Constraints
Dec 05	Stack View Constraint Conflicts When Hiding Views
Nov 28	Refresh Control Changes in iOS 10
Nov 21	Fun With Date Calculations
Nov 14	Adding Hardware Keyboard Shortcuts
Nov 07	Completion Handlers as an Alternative to Delegation
Oct 31	Local Notifications with iOS 10
Oct 24	Enum Raw Values and Failable Initializers
Oct 10	Updating Strings for Swift 3
Oct 03	Split View Controller Display Modes
Sep 26	Swift 3 Access Controls
Sep 19	openURL Deprecated in iOS10
Sep 12	Adding Swift Convenience Initializers
Sep 05	Auto Layout and Alignment Rectangles
Aug 16	Use High Contrast For Legibility
Aug 08	Objective-C Class Properties
Aug 01	Swift 3 Warning of Unused Result
Jul 25	Xcode Visual Memory Debugger
Jul 18	Slow App Startup Times
Jul 11	Pro Swift and Swift Algorithms
Jul 04	Privacy Settings in iOS 10
Jun 27	Auto Adjusting Fonts for Dynamic Type
Jun 20	WWDC 2016 Viewing Guide
Jun 06	Using Objective-C Lightweight Generics
May 30	Unregistering NSNotificationCenter Observers in iOS 9
May 23	Detecting low power mode
May 16	New Swift, Core Data and Cocoa Books
May 09	Swift Guide to Map Filter Reduce
May 02	Readable Width of Table View Cells
Apr 25	Static Tables and Dynamic Type
Apr 18	Readable Content Guides
Apr 11	Natural Text Alignment for RTL Languages
Apr 04	Stretching, Redrawing and Positioning with contentMode
Mar 28	Adapting Auto Layout Without Interface Builder
Mar 14	Scrolling Stack Views
Mar 07	Styling buttons using the Asset Catalog
Feb 29	Goodbye Spacer Views Hello Layout Guides
Feb 22	Pain Free Constraints with Layout Anchors
Feb 15	Hiding empty table view rows
Feb 08	Swift Documentation Quick Guide
Feb 01	Adapting Images for Size Classes
Jan 24	Proportional Spacing with Auto Layout
Jan 18	Swift Named Parameters
Jan 11	Using nullable to annotate Objective-C code
Jan 04	How to percent encode a URL String

2015

Dec 21	Finding Non-localized Strings
Dec 14	Swift String Cheat Sheet
Dec 07	How to Dereference an Unsafe Mutable Pointer in Swift
Nov 30	Making Popovers Adapt to Size Classes
Nov 22	Split views and unexpected keyboards
Nov 16	Swift Optional Protocol Methods
Nov 09	Quick Guide to Swift Delegates
Nov 01	Unwind segues as an alternative to delegation
Oct 26	cellForRowAtIndexPath in Four Lines
Oct 19	Creating scaled images with PDF Vectors
Oct 12	3D Touch Peek and Pop
Oct 05	Adding 3D Touch Quick Actions
Sep 27	Using Size Classes to Hide Stack View Contents
Sep 21	Did ATS Change Since the GM?
Sep 14	App Transport Security
Sep 07	Querying URL Schemes with canOpenURL
Aug 31	Xcode code coverage
Aug 24	Checking API Availability with Swift
Aug 17	Using Identifiers to Debug Autolayout
Aug 10	Dynamic Dispatch and Whole Module Optimization
Aug 03	A Size Class Reference Guide
Jul 27	Swift Whole Module Optimization
Jul 20	Refactoring with Storyboard References
Jul 13	Using the Address Sanitizer
Jul 06	Adapting Stack Views with Size Classes
Jun 29	iOS 9 Proportional Numbers
Jun 21	Easier Auto Layout with Stack Views
Jun 15	iOS 9 Slide Over and Split View
Jun 08	IB_DESIGNABLE Custom Views in Interface Builder
Jun 01	UIScreen bounds in iOS 8
May 25	Change the Width of Master View in Split View Controller
May 18	Animating Autolayout Constraints
May 06	Sorting an Array of Dictionaries
May 04	Default property attributes with ARC
Apr 26	Search bar not showing without a scope bar
Mar 25	Creating an OS X Core Data Helper App
Mar 09	Useful OS X Resources for iOS Developers
Feb 16	Updating to the iOS 8 Search Controller
Jan 26	Stanford iOS 8 Course With Swift

2014

Dec 24	Using a Launch Screen Storyboard
Dec 07	Modules and Precompiled Headers
Nov 02	Continuous Integration With Xcode Server
Sep 05	UIAlertController Changes in iOS 8
Aug 28	Open Settings URL
Aug 19	Xcode 6 Objective-C Modernization
Aug 18	Detecting Layout Problems with a Pseudolanguage
Aug 13	Creating a CocoaPod
Aug 07	Self Sizing Table View Cells
Jul 16	iOS 8 Camera Privacy Settings
Jul 15	Reset Location and Privacy Permissions
Jul 13	iOS 8 Adds Hebrew Speech Synthesis
Jun 15	iOS Core Animation Advanced Techniques
May 13	Reading QR Codes
Apr 16	Running Custom Clang Analyzer Builds
Apr 15	Data Detection for Links
Apr 13	Format String Issue Using NSInteger
Mar 19	Effective Objective-C 2.0
Mar 12	Xcode Debugger Quick Look
Mar 07	Enumerating Strings By Sentence
Feb 14	Table View Cells with Varying Row Heights
Jan 19	Larger Dynamic Type For Accessibility
Jan 08	Synthesized Speech From Text
Jan 03	Motion Effects

2013

Dec 30	Scaling Dynamic Type with Font Descriptors
Dec 17	Supporting Dynamic Type
Sep 28	Collection View Default Gestures
Sep 27	UIPopover arrow not repositioned correctly on rotation
Aug 04	Missing The Xcode Automatic Configuration Service
Jul 22	Using Launch Arguments To Test Localizations
Jun 30	Xcode Interface Builder Tips
Jun 24	Migrating to the new Twitter search API
Jun 18	UIRefreshControl Fun and Games
Jun 10	WWDC Keynote 2013
Jun 01	Checking version and device when restoring state
May 23	Restoration Classes and UIWebViews
May 21	State Preservation and Restoration
Apr 07	Bug Table View State Not Restored When Embedded In Navigation Controller
Apr 05	Downloading Old iOS SDK Documentation
Mar 07	Core Data by Marcus Zarra
Mar 03	Xcode 4.6 Recommended Build Settings
Feb 23	Apple Webpage Touch Icons
Jan 01	Open With Menu Duplicates

2012

Dec 31	Supporting the 4-inch Retina Display
Oct 08	Presenting View Controllers
Sep 11	VoiceOver Bug and iOS 5 TableViews Revisited
Sep 07	Prototype Table View Cells Not Working With VoiceOver
Sep 06	Adding A Search Bar To A Table View With Storyboards
Aug 24	Using Appearance Proxy To Style Apps
Aug 13	Stop Xcode Automatic Termination
Aug 09	Keeping Mountain Lion Awake
Aug 01	Automatic Property Synthesis with Xcode 4.4
Jul 09	Formatters and Locale Changes
Jul 05	Customizing Appearance With Resizable Images
Jun 21	Storyboard Segues
Jun 20	WWDC 2012 Session Videos
Jun 14	Using Number Formatters
Jun 11	iOS 6 WWDC Keynote Updates
Jun 08	Compressing PNG Images
Jun 07	Prototype Table Cells and Storyboards
May 28	Making Xcode behave
May 25	Making Some Changes
May 14	Detecting VoiceOver Status Changes
May 10	Programming iOS 5 by Matt Neuburg
May 07	Static Table Views with Storyboards
Apr 27	Xcode Balancing Brackets For Method Calls
Apr 23	VoiceOver Accessibility
Apr 06	Splitview controller is expected to have a master view controller
Mar 16	Updating for iPad retina display
Feb 29	Git branch management with Xcode
Feb 17	Updating to Xcode 4.3
Feb 07	Remote Packet Capture for iOS devices
Jan 30	Network Link Conditioner
Jan 19	Core Data Queries Using Expressions
Jan 10	Xcode 4.2 building for iOS 3.1.x and older devices
Jan 04	UIStepper control

2011

Dec 14	UIAlertView changes in iOS 5
Nov 24	Creating Gesture Recognizers with Interface Builder
Nov 16	Mail app style Split View Controller with a sliding master view
Nov 16	Stanford iOS development course updated for iOS 5
Nov 01	Settings Radio Group Element
Oct 24	Sync preference data with iCloud
Oct 19	iOS 5 Split View Controller Changes
Oct 18	Apple TV Update after running beta
Oct 11	App Store notifications
Oct 06	Stay Hungry. Stay Foolish
Oct 04	iOS 5 apple event
Sep 20	Disabling Clang Compiler Warnings
Sep 14	Xcode 4 DerivedData and cleaning the build directory
Aug 30	Book Recommendations
Aug 29	iTunes Connect App Status Update
Aug 26	Using UIActionSheet for external actions
Aug 22	Using pattern images to set background views
Aug 08	Printing Headers and Footers with a Print Page Renderer
Aug 04	Basic Printing with AirPrint
Jul 28	Xcode Project Modernization
Jul 20	Hello Lion, Goodbye Xcode 3
Jul 13	Supporting older versions of iOS
Jul 03	Passing Arguments with Xcode 4
Jun 27	Using Xcode 4 Refactor to rename a class
Jun 23	GitHub for mac
Jun 20	Thoughts on iOS 5
Jun 19	Remember to backup your keychain
Jun 18	UYLPasswordManager clearing the cache
Jun 16	Searching Twitter with iOS
Jun 12	NSFileManager defaultManager is not thread safe
Jun 02	iOS and Keychain Migration and Data Protection - Part 3
Jun 01	iOS and Keychain Migration and Data Protection - Part 2
May 27	iOS Keychain Migration and Data Protection - Part 1
May 17	Dealing with Failure in Objective-C initializers
May 16	PragProg Rails Book Sale
May 10	Localizing NIB files with Xcode 4
Apr 26	Use of properties by Xcode 4 templates
Apr 22	Private ivars
Apr 21	Stanford iOS App Development course
Apr 19	Violating user privacy in mobile apps
Apr 09	Objective-C Fundamentals
Mar 28	Interface Builder Outlet Collections
Mar 24	Upgrading to Xcode 4
Mar 21	Compiler Options in Xcode - GCC or LLVM?
Mar 09	Xcode 4 is here and in the App Store!
Mar 08	Using heapshots to find abandoned memory
Mar 01	Xcode conditional breakpoints
Feb 28	Speeding up table view cell loading with UINib
Feb 21	Xcode breakpoint actions
Feb 13	DRYing your instance variables
Feb 08	Understanding your (Objective-C) self
Feb 04	Xcode 4 GM seed
Jan 24	Using the Mac OS X automounter
Jan 12	iOS 4.3 beta
Jan 11	iOS 4.2.5 and Xcode 4 Preview 6
Jan 03	App Store Whitespace Validation Failure with Xcode 3.2.5

2010

Dec 23	Creating iPhone Ad Hoc Distribution builds
Dec 17	Localizing iPhone App Settings Strings
Dec 16	Localizing iPhone App Icon is not supported
Dec 15	Localize iPhone Application Name
Nov 28	Ad inventory unavailable with iOS 4.2
Nov 27	iAd Framework updates for iOS 4.2
Nov 23	Xcode Unknown iOS detected
Nov 22	Xcode 3.2.5 Base SDK
Nov 22	iOS 4.2 is here
Nov 11	Programming Ruby The PickAxe Book
Oct 25	Checking RSS Feeds for New Posts
Oct 19	Searching arrays with NSPredicate and blocks
Oct 16	Parsing an RSS Feed using NSXMLParser
Oct 14	Reading an RSS Feed
Oct 05	Xcode Build and Analyze broken for simulator
Oct 04	Swiping to delete rows from a table
Oct 02	Dynamically loading new rows into a table
Sep 28	Design Patterns in Ruby
Sep 23	Adding Booleans to Objective-C Arrays and Dictionaries
Sep 21	Apple Magic Trackpad
Sep 16	Placing iAd banners at the top of a table view
Sep 15	iOS SDK 4.2 Beta
Sep 14	Objective C anonymous categories
Sep 13	Repeating an iOS local notification
Sep 07	Installing multiple Xcode versions
Sep 05	iTunes 10 Toolbar Buttons
Sep 03	Xcode and iOS Updates
Aug 31	iTunes Connect App Status
Aug 30	Popping Tabbed Navigation Controllers
Aug 18	Setting iPhone Application Build Versions
Aug 12	The version of iPhone OS is too old
Aug 11	Apple iOS SDK 4.0.2 and 3.2.2
Aug 09	Reachability Updates
Aug 08	Checking network connectivity when displaying iPhone iAds
Aug 04	Application Icon Troubles
Jul 31	Adding Local Notifications with iOS 4
Jul 27	Filtering arrays with NSPredicate
Jul 23	Xcode 4 developer preview now open to all developers
Jul 22	iPhone Analytics Updates and News
Jul 21	iPad table backgroundView
Jul 19	Signing up for iAds
Jul 15	Juggling iOS versions
Jul 14	iOS SDK 4.1 beta
Jul 13	Adding iAds to an application in an afternoon
Jul 10	More on Validate Built Product
Jul 07	Flurry SDK 2.5 Issues
Jul 05	Tracking background memory usage of iOS 4 apps
Jul 04	Adding iOS4 Multitasking Support
Jun 29	All new App Store submissions must be with iOS 4
Jun 29	Updating for the iPhone 4 retinal display
Jun 26	This copy of iTunes will expire
Jun 24	Missing wallpapers when using iOS4 GM build
Jun 22	Xcode 3.2.3 Instant Setup
Jun 21	iAd Privacy Policy
Jun 21	Symbol not found errors in universal apps
Jun 21	Xcode 3.2.3 and iOS 4 SDK released
Jun 19	Requesting a new development certificate
Jun 17	WWDC2010 Videos now available in iTunes
Jun 14	Using an image for the UISplitViewController popover button
Jun 11	Flurry to release new SDK next week to comply with 3.3.9
Jun 08	Xcode 4 on the way
Jun 06	Delegation or Notification
Jun 03	What To Do About Analytics Now?
May 31	Automatically Running Unit Tests
May 30	Renewing provisioning profiles
May 29	Git Cheat Sheet
May 27	Cocoa Design Patterns
May 26	Unit Testing with OCUnit
May 19	Managing User Preferences within an iPhone App
May 18	Adding a settings bundle to an iPhone App
May 13	Selecting images in Universal apps
May 12	Testing universal app for iPhone
May 11	Jakob Nielsen on iPad Usability
May 10	Fixing Xcode default development region
May 07	Conditional compilation for debug or distribution builds
May 06	Which iPhone OS Version should your app support
May 05	Formatting source code when posting with MarsEdit 3
May 04	iPad Gestures
May 03	iPad Modal View Controllers
Apr 28	Keychain duplicate item when adding password
Apr 24	Converting to a Universal App (Part III)
Apr 21	Xcode Build Active Architecture Only
Apr 19	Converting to a Universal App (Part II)
Apr 19	The future of analytics on the iPhone
Apr 18	Finally a reason to buy a magic mouse?
Apr 14	Cocoa Factory Classes and Autorelease
Apr 13	Cocoa Naming Conventions for Memory Allocation
Apr 10	Xcode localization frustrations
Apr 09	Setting Xcode build version to Git commit name
Apr 08	As one NDA departs another arrives
Apr 08	Final goodbye to Subversion
Apr 08	Universal apps get higher billing in iTunes
Apr 07	Converting to a Universal App (Part I)
Apr 06	Universal apps or iPad HD
Apr 05	Application icon and image files
Apr 04	Archiving builds with Xcode Organizer
Apr 03	Xcode 3.2.2 Validate Built Product
Apr 03	The iPad NDA is finally lifted
Apr 03	Keychain group access
Mar 29	Simple iPhone Keychain Access
Mar 24	Using categories with private methods
Mar 23	Using categories with core data
Mar 22	AirMail Push Notifications
Mar 17	Multiple Xcode targets and info.plist
Mar 16	Downloading iPhone app data with the organizer
Mar 15	Code signing error CSSMERR_DL_MISSING_VALUE
Mar 15	NSFetchedResultsController and sort performance
Mar 12	Finding memory leaks in Xcode
Mar 11	Debugging core data on the iPhone