Swift blog posts, tutorials, tips, and tricks

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 ...
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Dec 22, 2020 • 4 min read Swift

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 ...
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Dec 15, 2020 • 5 min read Swift

Getting started with Property Wrappers in Swift

Property Wrappers in Swift allow you to extract common logic in a distinct wrapper object. Since the introduction during WWDC ...
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Nov 24, 2020 • 5 min read Swift

Constraints in Core Data Entities explained

Constraints in Core Data are part of an entity configuration. Settings like the entity name and Spotlight display name might ...
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Oct 27, 2020 • 4 min read Core Data Swift

NSManagedObject events: handling state in Core Data

An NSManagedObject lifecycle goes from insertion and updates until deletion in the end. All those events come with their own ...
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Oct 20, 2020 • 4 min read Core Data Swift

How to use the #available attribute in Swift

Marking pieces of code as available per platform or version is required in the ever changing landscape of app development ...
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Oct 13, 2020 • 5 min read Swift

Try Catch Throw: Error Handling in Swift with Code Examples

Try catch in Swift combined with throwing errors make it possible to nicely handle any failures in your code. A ...
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Oct 05, 2020 • 4 min read Swift

How-to use Diffable Data Sources with Core Data

Diffable Data Sources were introduced at WWDC 2019 as a replacement for UICollectionViewDataSource and UITableViewDataSource. The API is available on ...
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Sep 22, 2020 • 6 min read Core Data Swift

Diffable Data Sources Adoption with Ease

Diffable Data Sources were introduced at WWDC 2019 and are available since iOS 13. They're a replacement of the good ...
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Sep 15, 2020 • 5 min read Swift

Persistent History Tracking in Core Data

WWDC 2017 introduced a new concept available from iOS 11 which is persistent history tracking. It's Apple's answer for merging ...
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Sep 08, 2020 • 7 min read Core Data Swift

Write-Ahead Logging (WAL) disabled to force commits in Core Data

Write-Ahead Logging is the default journaling mode for Core Data SQLite stores since iOS 7 and OS X Mavericks. Journaling ...
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Aug 25, 2020 • 4 min read Core Data Swift

Adding a closure as a target to UIButton and other controls in Swift

The target-action pattern is used in combination with user interface controls as a callback to a user event. Whenever a ...
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Aug 05, 2020 • 2 min read Swift

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