Patrick Bacon on Atomic Spin

iOS / OS X

Turn Any iOS Task into a Background Task with ReactiveCocoa’s RACSignal

An example of how ReactiveCocoa can be used to turn any task into a background task using a RACSignal that calls endBackgroundTask: when disposed of.

Objective-C

Using ReactiveCocoa to create an interface to an asynchronous iOS framework or library.

iOS / OS X

A simple method of testing for iOS retain cycles / memory leaks in an automated test suite using Objective-C.

iOS / OS X

A Git pre-commit hook to prevent accidentally committing a Specta test suite with a focused examples (fit or fdescribe).

iOS / OS X

Logging and packet sniffing to learn more about how Core Bluetooth's readValueForCharacteristic method behaves.

Objective-C

Using the timeout:onScheduler operator in ReactiveCocoa to manage asynchronous, potentially long-running work.

Development Practices

Even when you know you shouldn't use floats/doubles for currency, there are several many places that rounding errors can slip in.

Objective-C

A comparison of ReactiveCocoa's replay, replayLast, and replayLazily convenience methods.

Functional Programming

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

Objective-C

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

Personal Optimization

An explanation of the Lattice Multiplication Method and the Partial Quotients Division Method.

Software Science

A return statement in a finally clause can lead to exceptions being silently discarded in Java, JavaScript, and Ruby (and likely others).