Protocol-Oriented Problems and the Immutable ‘self’ Error
iOS MacProtocol-oriented programming leverages Swift's features in a powerful way, but there are practical concerns, like whether you want both value types and reference types...
Building an iOS App in Rust, Part 4: A Basic View Model in Rust
iOSWelcome to Part 4 of the "Let's Build an iOS App in Rust" series. We'll continue to build on the tools and techniques we...
Introducing Freddy, an Open-Source Framework for Parsing JSON in Swift
iOSParsing JSON can be tricky, but it shouldn't be. We think parsing JSON should feel like writing regular Swift code, so we've introduced Freddy,...
Hi! I’m #available!
iOS MacAs app developers, we don't have the luxury of shipping our software exclusively on the latest-and-greatest OS version. We want to use the new...
Building an iOS App in Rust, Part 3: Passing Owned Objects between Rust and iOS
iOSIn Part 3 of our "Building an iOS App in Rust" series, we'll cover how to pass much more complex data than strings, and...
Inspecting Auto Layout with the Cocoa Layout Instrument
iOSIn previous posts, MarkD delved into many of the diagnostic tools available to us in Instruments, such as the Time Profiler and the Energy...
Introducing the Open-Source Big Nerd Ranch Core Data Stack
iOS MacWhen we at the Ranch use Core Data, we inevitably end up using it in a multi-threaded environment. The Right Way™ to use Core...
UI Testing in Xcode 7, Part 1: UI Testing Gotchas
iOSUI testing is testing via the user interface. This is nothing new; we do it all the time, manually, by running an app and...
Building an iOS App in Rust, Part 2: Passing Primitive Data Between Rust and iOS
iOSLast time, we built a simple "Hello, World!" library in Rust and successfully linked it into an iOS app. This time, we're going to...
Swift 2.0 Error Handling
iOS MacAs my fellow Nerd (https://nerdranchighq.wpengine.com/about/the-team/juan-pablo-claude/) pointed out in his post on (https://nerdranchighq.wpengine.com/blog/error-handling-in-swift-2/), the latest iteration of Swift introduces...
WatchKit 2: Complications
iOSThere are a lot of nerds with a soft spot for (https://en.wikipedia.org/wiki/Horology). I tend towards chronographs; I love the extra functions for stopwatches, secondary...
We’ve Got You Covered: Code coverage and Xcode 7
iOS MacOne of Xcode 7’s new features is in-line display of code coverage metrics. Yay? That’s a pretty dull way of describing a nice feature....
