Using KeyPaths as functions in Swift 5.2
One of Swift 5.2’s new features is the ability to use KeyPaths as functions. This can be extremely useful in cases where you’d only return the value of a certain KeyPath in a closure. Let’s Read more…
Working with throwing functions in Swift
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 Read more…
Adding default values to subscript arguments in Swift 5.2
The ability to define custom subscripts in Swift is really powerful. It allows us to write very natural and concise code. Consider the following example of a Grid with a custom subscript: struct Grid { Read more…
How and when to use callAsFunction in Swift 5.2
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 Read more…
Testing push notifications in the Simulator with Xcode 11.4
Xcode 11.4 is currently still in beta, keep in mind that you can’t use this version of Xcode to ship apps to the store. Read my guide on installing multiple Xcode versions alongside each other Read more…
Using Promises and Futures in Combine
So far in my Combine series I have mostly focussed on showing you how to use Combine using its built-in mechanisms. I’ve shown you how Combine’s publishers and subscribers work, how you can use Combine Read more…