Swift blog posts, tutorials, tips, and tricks

Memory leaks prevention using an autoreleasepool in unit tests

Memory leaks often happen without notice. Although best practices like using a weak reference to self inside closures help a ...
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• 4 min read May 10, 2022 Swift

AsyncSequence explained with Code Examples

AsyncSequence is part of the concurrency framework and the SE-298 proposal. Its name implies it's a type providing asynchronous, sequential, ...
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• 4 min read May 03, 2022 Concurrency Swift

AsyncThrowingStream and AsyncStream explained with code examples

AsyncThrowingStream and AsyncStream are part of the concurrency framework introduced in Swift 5.5 due to SE-314. Async streams allow you ...
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• 5 min read Apr 26, 2022 Concurrency Swift

Using MetricKit to monitor user data like launch times

The MetricKit framework allows us to collect all kinds of data from our end users, including launch times and hang ...
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• 5 min read Apr 12, 2022 Swift

AnyObject, Any, and any: When to use which?

AnyObject and Any got a new option any as introduced in SE-355, making it harder for us developers to know ...
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• 4 min read Mar 22, 2022 Swift

How to use the #available attribute in Swift

Marking pieces of code as available or unavailable per platform or version is required in the ever-changing landscape of app ...
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• 5 min read Mar 07, 2022 Swift

Self-documenting code in Swift to increase readability

Self-documenting code helps explain a piece of code to other developers on a project without the need for actual documentation ...
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• 6 min read Jan 25, 2022 Swift

Tasks in Swift explained with code examples

Tasks in Swift are part of the concurrency framework introduced at WWDC 2021. A task allows us to create a ...
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• 6 min read Jan 18, 2022 Concurrency Swift

Guard statements in Swift explained with code examples

Guard statements in Swift allow us to implement checks into our code that prevents the current scope from continuing. When ...
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• 4 min read Jan 11, 2022 Swift

Reflection in Swift: How Mirror works

Reflection in Swift allows us to use the Mirror API to inspect and manipulate arbitrary values at runtime. Even though ...
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• 6 min read Dec 21, 2021 Swift

Creating an App Update Notifier using Combine and async/await

An app update-notifier promotes a new app update to your users. Using a notifier will get better adoption rates with ...
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• 7 min read Nov 30, 2021 Swift

Composition vs. Inheritance: code architecture solutions explained in Swift

Composition and inheritance are both fundamental programming techniques when working in object-oriented programming languages. You've likely been using both patterns ...
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• 4 min read Nov 16, 2021 Swift

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