objective-c Archives

iOS / OS X

6 Ways Swift Improves On Objective-C

Swift fixes a lot of the things that bother me about Objective-C. This post discusses 6 Swift features that will make iOS development more efficient.

Developer Tools

Expanding User-Defined Runtime Attributes in Xcode with Objective-C

Changing the borderColor & shadowColor of a UIView and the font properties of a UISegmentedControl in XCode w/user-defined runtime attributes & Objective-C.

Functional Programming

ReactiveCocoa: Understanding switchToLatest

An example of using -map: and -switchToLatest: to subscribe to signals on a sequence of changing objects.

Objective-C

combineLatest vs. zip in ReactiveCocoa

A couple of examples showing the differences between the +combineLatest: and +zip: operators in ReactiveCocoa.

iOS / OS X

Using UIScrollView with Auto Layout in iOS

How to set up a UIScrollView with AutoLayout with support for portrait and landscape changes and auto content scrolling when the keyboard pops up.

Objective-C

Replacing the Objective-C “Delegate Pattern” with ReactiveCocoa

Objective-C's delegate pattern isn't flexible and spreads out one particular concern into multiple areas. Here's a way to replace it using ReactiveCocoa.

iOS / OS X

Intro to iOS Animation

Animations in iOS are simple to implement but can lead to a mess of code. Here's how to clean the mess up with a couple of Objective-C features.

Embedded Systems

Localizing Strings in Objective-C

With ibtool and Localized String, you can have your application ready to be translated into a number of different languages in just a few steps.

Ruby Motion

ReactiveCocoa: The Future of Cocoa Programming

ReactiveCocoa will improve the structure and reduce the complexity of your code. Most importantly, it removes the need for keeping track of state.

Objective-C

Simple Network Prototyping in Objective-C

Cocoa’s networking APIs can be a bit cumbersome, so I wrote a simple asynchronous wrapper around NSURLConnection.

Objective-C

GCD Dispatcher: A Small Objective-C Wrapper around GCD

Objective-C

Instance Variables in Objective-C

How Objective-C stores instance variables, and how the new runtime has improved this.