Tag Archives: Swift

Creating an iOS Wizard UI in Swift

I published a reusable framework, written in Swift, for implementing the Wizard UI design pattern, named Wizardry. It simplifies creating a user interface composed of multiple view controllers that enables the user to complete a task. This is a particularly important UI design pattern for mobile apps … Continue reading

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Find keys by value in Swift dictionary

Here’s a helper method that might come in handy when working with a Swift dictionary. It finds every key mapped to a particular value. This is similar to the allKeysForObject(_:) method of NSDictionary, but it is generic so it can return … Continue reading

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Finding unused resource strings in an iOS app

If you work on an iOS or OS X app that uses Strings files to store localized display text, over time those files can accumulate entries that are no longer used. Perhaps a developer forgot to remove a resource string when refactoring … Continue reading

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Creating Tic-tac-toe in Swift: User interface

This blog post is the third and final update about my Tic-tac-toe game, written in Swift. The source code is available on GitHub: https://github.com/ijoshsmith/swift-tic-tac-toe The app now has a user interface, which allows you to play against the computer or against another … Continue reading

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Higher-order functions in Swift

This article reviews some very useful higher-order functions available in Swift’s standard library, by showing a simplified implementation of each function. Along the way, I’ll explain how all of the higher-order functions are based on a single loop. Let’s get higher Similar to how a rock … Continue reading

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Creating Tic-tac-toe in Swift: Artificial intelligence

This blog post is the second update about my Tic-tac-toe game, being written in Swift. The source code is available on GitHub: https://github.com/ijoshsmith/swift-tic-tac-toe Over the past week I wrote an intelligent agent which implements the Tic-tac-toe strategy devised by Allen Newell and … Continue reading

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Creating Tic-tac-toe in Swift: Gameplay and data model

This blog post is an update on my work-in-progress Tic-tac-toe game, being written in Swift. The source code is available on GitHub: https://github.com/ijoshsmith/swift-tic-tac-toe I’ve reached the first major milestone. The program is capable of playing Tic-tac-toe against itself, although there … Continue reading

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