If you’re ever amongst a group of developers and want to spark some intense discussion, all you need to do is call out that tabs are better than spaces. Or that indenting code with two spaces is much better than four. Or that the curly bracket after a function definition Read more…
Arrays in Swift can hold on to all kinds of data. A common desire developers have when they use arrays, is to remove duplicate values from their arrays. Doing this is, unfortunately, not trivial. Objects that you store in an array are not guaranteed to be comparable. This means that Read more…
If you’ve ever written or used a function that accepts a closure as one of its arguments, it’s likely that you’ve encountered the @escaping keyword. When a closure is marked as escaping in Swift, it means that the closure will outlive, or leave the scope that you’ve passed it to. Read more…
One of Swift’s incredibly useful features is its ability to dynamically compute the value of a property through a computed property. While this is a super handy feature, it can also be a source of confusion for newcomers to the language. In this week’s post, I would like to take Read more…
As soon as Swift was introduced, people were adding their own extensions and patterns to the language. One of the more common patterns was the usage of a Result object. This object took on a shape similar to Swift’s Optional, and it was used to express a return type that Read more…
In Swift 2.0, Apple introduced the throws keyword in Swift. This addition to Swift language added the ability for developers to write code that clearly communicates that an error might occur during the execution of a code path, and it forces the caller of that code to handle, or explicitly Read more…
A new Swift 5.2 feature is the ability to call instances of types as functions. Or, as the Swift Evolution proposal calls it “Callable values of user-defined nominal types”. The very short description of this feature is that it allows you to call instances of any type that has a Read more…
Recently I wanted to build a generic data source layer. This data source would be able to return pretty much anything from a local cache, or if the local cache doesn’t contain the requested object, it would fetch the object from a server and then cache the result locally before Read more…
The Swift team has recently released Swift 5.1. This version of the Swift language contains many cool features like Function Builders that are used for SwiftUI and Property Wrappers that can be used to add extra functionality to properties. This release also contains a feature called Module Stability. But what Read more…
If you’re into writing clean, testable and maintainable code you must have come across the term “Dependency Injection” at some point. If you’re not sure what dependency injection is, that’s okay. I will explain it briefly so we’re all on the same page before we get to the main point Read more…