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Tag Archives: Swift
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
Posted in Swift, Tips and Tricks, Uncategorized
Tagged Swift
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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
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
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
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
Creating Tic-tac-toe in Swift
Normally I blog about a program I’ve already written. I decided this time to take a different approach, and blog about a Tic-tac-toe program that I’m writing instead. This will give people who are interested in watching a Swift program evolve over … Continue reading
Compressing a Swift array
Suppose you have an array of values in your Swift app and you need to compress it to a smaller size, with the intention of making it occupy less memory. If the array contains many consecutive repeated values it could be … Continue reading
Creating ASCII art in functional Swift
This article explores an iOS app, written in a functional Swift style, that converts an image to ASCII art. For example, when given the famous Lenna photograph… …it creates a string that, when printed, looks something like this… Zooming into … Continue reading
Caesar cipher in Swift
I posted a Swift project to GitHub that implements the Caesar cipher, which was the encryption technique used to protect Julius Caesar’s personal correspondence. It’s a straightforward algorithm that maps each letter in the alphabet to another letter. The code also … Continue reading
Getting into functional programming with Swift
This article examines two implementations of a logic puzzle written in Swift. The first example uses an imperative programming style, which is the style familiar to most iOS developers. Then we see the same small program written in a functional style, which is … Continue reading
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