Using App Groups for communication between macOS/iOS apps from the Same Vendor
Apple’s “app group” technology allows a collection of macOS (or iOS) apps from the same development team, developer, vendor, etc., to all communicate with each other, coordinate functionality, share resources,...
How to Use Git Pull Requests to Improve Code Quality and Developer Participation
Today, we’ll talk about a feature of several well-known Git tools that I prefer to call a “merge request,” but tends often to be referred to as a “pull request,” for example, on sites like GitHub and...
How to Use Xcode Instrument to Optimize Your Swift Code
I still run across curmudgeons who flat out reject techniques like object-oriented programming (especially inheritance and polymorphism), protocols and protocol-oriented programming (especially composition), generics, and...
Dividing and Conquering Your Xcode Projects with Targets
In this tutorial, I’ll show you how to leverage Xcode targets to control the massive complexity involved in building iOS (and macOS, watchOS, and tvOS) apps. A lot of time can be saved when developers realize that not...
Best Practices for Building Swift Classes
In this tutorial, I’m going to give you some best practices that will help you safely and effectively use classes (reference types) and reference semantics in Swift. Protocol-oriented programming (POP) and value semantics...
Protocol-oriented Data Structures in Swift: A Generic Doubly Linked List
Let’s talk about creating a list on steroids, i.e., a generic doubly linked list in Swift. For our purposes here, a list is a software receptacle that contains related data that we’re interested in inspecting,...
Design Patterns in Swift #3: Facade and Adapter
This tutorial is the third installment in our series on design patterns. I started this series with a tutorial examining two examples of patterns in the “creational” category: factory method and singleton. I then...
Design Patterns in Swift #2: Observer and Memento
This tutorial is the second installment in an AppCoda series on design patterns started last week. There are 23 classic software development design patterns probably first identified, collected, and explained all in one place by...
Design Patterns in Swift #1: Factory Method and Singleton
There are 23 classic software development design patterns probably first identified, collected, and explained all in one place by the “Gang of Four” (“GoF”), Erich Gamma, Richard Helm, Ralph Johnson, and...
New in iOS 12: Adding a Custom UI and Interactivity in Local and Push Notifications
If you look at Apple’s “What’s New in iOS” 12 page, you’ll find a section entitled “Interactive Controls in Notifications,” which exclaims: Notification content app extensions now support user...