Swift

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

Updating to Swift 4.2

Swift 4.2 is a major release and shipped with Xcode 10. It comes with a lot of code improvements for ...
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  •  2 min read Swift

Defer usage in Swift

Although the defer keyword was already introduced in Swift 2.0, it's still quite uncommon to use it in projects. Its ...
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  •  2 min read Swift

CompactMap vs flatMap: The differences explained

CompactMap and flatMap, what are the differences and when do you use each? Swift 4.1 introduced this new method with ...
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  •  2 min read Swift

Compiler Diagnostic Directives using a hashtag in Swift

The Swift standard library brings quite some compiler diagnostic directives by default. Although this might not ring a bell at ...
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  •  2 min read DebuggingSwift

Where usage in Swift

Where is a powerful keyword within Swift to easily filter out values. It can be used in many different variants ...
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  •  2 min read Swift

Typed notifications using custom extensions

The Swift API contains a lot of notifications sent out by the system like NSManagedObjectContextObjectsDidChange in Core Data or the ...
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  •  2 min read Swift

Printing data requests using a custom URLProtocol

Almost all apps contain some kind of data requests. Printing data requests could sometimes be handy for debugging purposes. This ...
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  •  2 min read Swift

Controlling Progress children by adding remove

Controlling Progress children by default makes it only easy to add children to a Progress instance, but removing is not ...
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  •  2 min read Swift

Share Extension UI Tests written in Swift

UI Tests are a great tool to validate your application. It is easy to create them for your main application, ...
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  •  < 1 Swift

Updating to Swift 4.1

Swift 4.1 is released on the 29th of March and will be shipped with Xcode 9.3. Although it's a minor ...
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  •  < 1 Swift

Optional protocol methods in Swift

In Swift it's kind of unsupported to implemented optional protocol methods. You can, which is ugly, use the @objc syntax: ...
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  •  < 1 Swift

OptionSet usage in Swift like NS_OPTIONS

Swift 3.0 introduced the OptionSet protocol after renaming from OptionSetType. It is a Swift alternative to the well-known and often used ...
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  •  < 1 Swift