Published in Better Programming·PinnedMember-onlyFactory: Swift Dependency InjectionA new approach to an old problem. — Why do something new? The first dependency injection system I ever wrote was Resolver. This open source project, while quite powerful and still in use in many applications, suffers from a few drawbacks. Resolver requires pre-registration of all service factories up front. Resolver uses type inference to dynamically find and return registered services from…Programming9 min readProgramming9 min read
PinnedMember-onlyThe SwiftUI SeriesA series of articles on SwiftUI application development — SwiftUI was introduced over three years ago at WWDC 19 and launched with iOS 13. Since that launch SwiftUI has generated a ton of interest, a bit of controversy, and a lot of articles. Including my own. I’ve written rather extensively on SwiftUI, on SwiftUI application architectures, and on issues…I OS App Development4 min readI OS App Development4 min read
Published in Better Programming·17 hours agoMember-onlyFactory: Multiple Module RegistrationHow to initialize everything before anything is initialized. — When you want to use a dependency injection system like Factory with multiple modules you often run into a “Who’s on first” dilemma. Let’s say that ModuleP specifies an abstractAccountLoading protocol. // ModuleP public protocol AccountLoading { func load() -> [Account] } Moving on, we have an accounting module, ModuleA…Dependency Injection7 min readDependency Injection7 min read
Published in Better Programming·Nov 19Member-onlySwiftUI Binding ExtensionsMaking binding in SwiftUI views and previews as easy as ABC — Here are a few common SwiftUI issues that fall into the “there has to be a better way” category. Optional Values Let’s begin with optionals. It’s common to have optional values in our code due to API requirements, but working with them in SwiftUI can be a bit of a pain. Consider. …Swiftui6 min readSwiftui6 min read
Published in Better Programming·Oct 30Member-onlyThoughts on Software ArchitectureWhy there will never be one “pure” architecture to rule them all… — There’s a school of thought among software developers that software architecture should be completely and totally independent and separate from the user interface that it supports. They argue that one should be able to put any software architecture on top of any user interface and everything should just work. It’s…Software Architecture8 min readSoftware Architecture8 min read
Published in Better Programming·Oct 18Member-onlyFunctional Dependency Injection in SwiftAn alternative to Protocol-Oriented-Programming. — Almost all of us have created service-based protocols in order to facilitate unit testing in our applications. And we’ve also done them to enable previews when developing in SwiftUI. The pattern is straightforward. Create a protocol describing what you want done. Then create a class or struct that implements that…I OS App Development6 min readI OS App Development6 min read
Published in Better Programming·Sep 22Member-onlySwiftUI Lists Are Broken And Can’t Be FixedHow an age-old problem has surfaced once more. — So over the weekend, I was working on the SwiftUI demo app for RequestBuilder and I ran into a problem. RequestBuilder, as the name might indicate, uses the Builder design pattern to build and execute URLRequests for Combine and Async/Await. …Mobile App Development7 min readMobile App Development7 min read
Aug 27Member-onlyHow NOT To Recruit On LinkedIn!As mentioned in an earlier article on Resolver, I’m a Lead/Senior iOS Software Engineer who just hung up his “Open To Work” sign on LinkedIn. Little did I know that in doing so I’d be inundated by hundreds upon hundreds upon hundreds of recruiters, all sending me connection requests and…Software Development8 min readSoftware Development8 min read
Aug 7Using Resolver? Check In!Just curious where my dependency injection system ended up... — The status on my LinkedIn page is now “Open for Work” and it’s funny how doing that one simple thing changes your mindset and attitude, even to the point where it affects your dreams. To that point, a few days ago I had a dream where I was sitting in…I OS App Development4 min readI OS App Development4 min read
Published in Better Programming·Jul 31Member-onlySwiftUI Managed ViewsHow to overcome some of the limitations with Environment, EnvironmentObject, and other property wrappers. — I wrote an earlier article on how to write views that are “testable”. There I demonstrated a few of the ways one could break logic and other code out of a view body without having to create a full-fledged View Model. But SwiftUI’s Environment and EnvironmentObject property wrappers can make…Swiftui8 min readSwiftui8 min read
