Property Wrappers
First introduced in Swift 5.1, property wrappers allow us devs to add our own implementation details to a property before they are initialized. Currently, by delaying initialization we can declare a property as lazy, and then return our property when it’s first requested. Property wrappers…
Running Xcode Tests from CI
The ability to run a suite of tests is a great way to cut down on manual testing time, whilst still having the knowledge that any new changes have not broken the codebase. There are a number of different options when it comes to writing…
Method Swizzling
When anyone mentions swizzling I automatically get worried. Method swizzling is an Objective C runtime feature which allows for the switching of method implementations. This means any function can theoretically be switch out for another one at run time. The Objective C runtime as a…
WWDC 19 – Swift UI, Combine
A full host of new features were announced at WWDC 2019, but there have been two features that have been getting more of a buzz than any others. Not since the announcement of Swift back in 2014, has Apple released something which could potentially change…
Importing Data into HealthKit
This post carries on from Importing File Data, where we looked at how to import a GPX file, and parse it into useable objects. If you’ve not read the first part I would recommend doing so before continuing. Recap For a quick recap, we ended…
Importing File Data
To try and combine by love for programming, with my passion to exercise, I’m currently in the process of writing an iOS app to help out with my triathlon training. In this post I will cover how to register your app for external file types,…
I don’t want this Class!
There are some very powerful features in the Objective-C runtime, so is this something we should be taking advantage of more? During my time as a developer I have seen my fair share of examples where people have abused the Objective-C runtime to solve a…