John Fisher on Atomic Spin

Swift

iOS SpriteKit Physics Tutorial in Swift

In this post I'll cover some major features of SpriteKit's sprite rendering and physics engine by implementing a small iOS game.

Web Apps

Understanding the algorithms behind credit card validation, plus how to implement them for a web front-end using AngularJS.

Developer Tools

Solving the annoying "RPC failed; result=22, HTTP code = 411" error. This post also discusses using the HTTPS vs SSH protocols with Git.

iOS / OS X

How to easily chain asynchronous operations in iOS using ReactiveCocoa.

iOS / OS X

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.

iOS / OS X

Two simple and commonly-used methods for interpolating points in iOS with cubic Bezier curves.

Developer Tools

Xcode shortcuts for getting around workspace windows, navigating in the editor, building, running, testing, and debugging.

iOS / OS X

How can several developers best work on an app in parallel, using the Interface Builder with storyboards? With an RBStoryboardLink view controller.

.NET / WPF

Comparing the tools (Dotfuscator, Confuser, & ILProtector) and considering the potential drawbacks of .NET Obfuscation.

Web Apps

Here are four approaches developers can use to access Rails params and instance variables within their own Angular controller code.