Fri, Mar 27
Build Native iOS Apps Using JavaScript

Familiar with JavaScript? Looking to build native iOS apps?

React Native enables you to build world-class application experiences on native platforms using a consistent developer experience based on JavaScript and React.”

Facebook, creator’s of React Native, use the platform for a number of production applications.

Thu, Mar 26
Functional, Declarative Approach to Building a User Interface

ComponentKit puts a unique spin on describing and building a user interface:

“It lets you focus on what your UI should look like, not the steps necessary to build it. It emphasizes a one-way data flow from immutable models to immutable components that describe how views should be configured. It does the heavy lifting of building a view hierarchy from this description.”

This is a powerful concept, moving from code specific statements (e.g layoutSubviews) to more a more generic idea such as “stack these UI elements, one atop the other.”

Wed, Mar 25
as? Operator for Objective-C

SwiftyAs provides similar functionality to the as? operator in Swift, allowing for safer type casts. So how is this accomplished in Objective-C? Tom Adriaenssen:

“SwiftyAs introduces a category on NSObject, providing a readonly block property taking a Class and returning an id. The class represents the desired type.”

Xcode 6.3 and iOS 8.3 beta 4 Releases

Apple has released another round of beta’s for Xcode 6.3 and iOS 8.3.

Changes includes Objective-C nullability qualifiers for better interoperability with Swift as well updated documentation in Xcode assertions in Swift.

Tue, Mar 24
Xcode Plugin: Visual CAMediaTimingFunction Curves

Xu Lian:

“CATweakerSense is an Xcode plugin that makes working with CAMediaTimingFunction more visual.”

CATweakerSense integration is very nice, put your cursor/caret on a CAMediaTimingFunction and it will show an overlay of the actual time curve. As a bonus, you can adjust the curve adjust it on-the-fly and immediately see the results.