Swift blog posts, tutorials, tips, and tricks

UIKeyCommand how-to add keyboard shortcuts & speed up your workflow

The UIKeyCommand class allows you to add keyboard shortcuts to your app. Although they might seem useful for iPad only, ...
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Jul 16, 2019 • 6 min read Swift Workflow

Combine debugging using operators in Swift

Combine debugging can be hard with long stack traces which don't help at all. Asynchronous callbacks follow up on each ...
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Jul 09, 2019 • 4 min read Combine Debugging Swift

Creating a custom Combine Publisher to extend UIKit

A Custom Combine Publisher can add missing functionalities to UIKit elements you use every day. A lot of boilerplate code ...
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Jul 02, 2019 • 4 min read Combine Swift

Dynamic Member Lookup combined with key paths in Swift

Dynamic member lookup has been introduced in Swift 4.2 with SE-195 and already allowed some pretty nice solutions to for example ...
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Jun 11, 2019 • 3 min read Swift

Using NSBatchDeleteRequest to delete batches in Core Data

An NSBatchDeleteRequest can be used to efficiently delete a batch of entries from a Core Data SQLite persistent store. It runs ...
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May 21, 2019 • 3 min read Core Data Swift

Weak self and unowned self explained in Swift

Weak self and unowned self in Swift for many of us are hard to understand. Although Automatic Reference Counting (ARC) ...
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May 14, 2019 • 7 min read Swift

Self-documenting code to improve readability in Swift

Self-documenting code can improve the readability of your codebase. It basically means that you don't have to write comments to ...
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May 08, 2019 • 3 min read Swift

Typealias usage in Swift

A typealias in Swift is literally an alias for an existing type. Simple, isn't it? They can be useful in ...
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Apr 30, 2019 • 2 min read Swift

URLSession: Common pitfalls with background download & upload tasks

URLSession enables you to download and upload from the background. Although the basics seem to be easy, it's quite hard ...
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Apr 23, 2019 • 4 min read Swift

@unknown default usage with enums in Swift

@unknown default has been introduced in Swift 5 with SE-0192. It's a new addition to the way we can work ...
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Apr 09, 2019 • 3 min read Swift

Swift 5.0: How to migrate your project and frameworks

Swift 5.0 has been released in March 2019 and is the first ABI stable Swift release. Although a lot of ...
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Apr 02, 2019 • 3 min read Swift

Blog about Swift: Tips and ideas to start your own

How to start your own Swift blog? It's a question I get asked more and more. I've given some tips ...
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Mar 19, 2019 • 5 min read Swift

SwiftLee

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