Swift

Learn more and get better in Swift using this list of Swift blog posts, tutorials, tips, and tricks.

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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  •  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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  •  4 min read Core DataSwift

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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  •  4 min read Core DataSwift

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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  •  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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  •  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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  •  6 min read Core DataSwift

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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  •  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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  •  7 min read Core DataSwift

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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  •  4 min read Core DataSwift

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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  •  2 min read Swift

ValueTransformer in Core Data explained: Storing absolute URLs

ValueTransformers in Core Data are a powerful way of transforming values before they get inserted into the database and before ...
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  •  7 min read Core DataSwift

SF Symbols: The benefits and how to use them guide

SF Symbols were introduced during WWDC 2019 and are a big present for us developers. Apple basically gave us free ...
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  •  11 min read Swift

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