Computed properties are part of a family of property types in Swift. Stored properties are the most common which save and return a stored value whereas computed ones are a bit different. A computed property, it’s all in the name, computes its property upon request. It can be a valuable addition to any of your …
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SwiftLee 2020 In Review: Most read blog posts
Every year I’m looking back at what I achieved with SwiftLee as well as what I want to achieve in the upcoming year. I did this in 2018, 2019, and I’m doing the same in this blog post for 2020. 2020 is definitely not comparable to the years before due to COVID and all its …
SwiftLee Weekly Archive
Getting started with associated types in Swift Protocols
Associated types in Swift work closely together with protocols. You can literally see them as an associated type of a protocol: they are family from the moment you put them together. Obviously, it’s a bit more complicated to explain how associated types work but once you get the hang of it, you’ll be using them …
Result in Swift: Getting started with Code Examples
The Result enum is available since Swift 5 and allows us to define a success and failure case. The type is useful for defining the result of a failable operation in which we want to define both the value and error output type. The standard Swift library adds more functionality to the result type which …
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Xcode Mark Line to improve readability using // Mark: comments
Xcode Mark Lines allows us to create a better overview of sections within our classes or structs. A so-called mark comment adds both a chapter title and linebreak in the Xcode method navigator. This chapter split makes it easier to quickly navigate through a relative big object. Even-though this technique is great and allows us …
App Launch Time: 7 tips to increase performance
App Launch Time is the time it takes before your app becomes responsive after startup. As the first experience of your user it’s important that it’s smooth and as fast as possible. A slow startup time could mean losing a lot of users which can result in less usage in your app. Even-though today’s devices …
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I’m Antoine van der Lee, an iOS engineer since 2009 and currently a Staff iOS Engineer at WeTransfer. I’ve published new Swift articles weekly since 2019 and curated 200+ newsletter issues and I frequently speak at conferences all around the world. A weekly newsletter containing unique content: I promise I’ll never send you anything besides …
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