Cocoa with Love

App architecture basics in SwiftUI Part 4: Services

Mar 23, 2021

This article is about adding a separated Services-layer to an app. A Services-layer is, in my opinion, the single best app architectural addition you can make, after the basic Model-View separation already implicit in SwiftUI.

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App architecture basics in SwiftUI Part 3: Module-separated layers

Feb 12, 2021

Slicing an app into modules is the best organizational step you can make. It's a step you should take before you choose to make any other deliberate architectural choice.

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App architecture basics in SwiftUI, Part 2: SwiftUI's natural pattern

Jan 19, 2021

I'll look at the pattern that application architectural pattern that emerges naturally when writing SwiftUI apps in a minimalist way. I'll also look at the different roles that exist in the basic SwiftUI application architecture.

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App architecture basics in SwiftUI, Part 1: Coding through iteration and integration

Dec 31, 2020

I'm going to write a JSON feed reader app in SwiftUI and focus on writing the app through small, incremental additions.

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22 short tests of combine – Part 3: Asynchrony

Aug 18, 2019

This article will be the final third of my investigation, looking at sequencing and threading in Combine; what guarantees does Combine offer for thread safety and delivery order. I'll finish up with a quick look at Combine's performance.

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22 short tests of combine – Part 2: Sharing

Aug 17, 2019

This middle third of the investigation will span a trio of topics: sharing computation, shared reference lifetimes and sharing subscribers.

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22 short tests of Combine – Part 1: Protocols

Aug 16, 2019

This article will be the first third of my investigation into Combine, covering an effort to re-implement the three key protocols of Combine: `Publisher`, `Subscriber` and `Subscription`

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First impressions of SwiftUI

Jun 8, 2019

This article will look at how SwiftUI's approach to declarative views compares to CwlViews, why the two approaches differ and what Apple changed to make this possible. I'll end with some thoughts about how this will affect macOS and iOS development.

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Declarative Views

May 3, 2019

In this article, I'll look at the the biggest problem with non-declarative views and how frameworks have slowly become more declarative, over time. I'll take a guess at what approach a declarative view framework from Apple might use – although keep in mind, I have zero insider knowledge and there's only a month before WWDC proves how wrong I am.

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Introducing CwlViews

Apr 28, 2019

CwlViews is a library that offers declarative construction for all common iOS and macOS view and application objects. The result hides many of the busywork tasks that consume much of Cocoa application programming, leaving behind a highly concise, declaratively constructed, view-state driven, reactively connected experience.

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