Swift is a programming language released by Apple in 2014. It was designed for a wide range of uses, from mobile and desktop applications (iPhone, iPad, Apple Watch, Apple TV, Mac) to websites, web applications, and APIs* to operating systems and more.
In this tutorial we'll increment the version number of a Xcode single view application using a Swift script. We'll cover how to make the script executable, accept command line input, and execute shell commands from our Swift file.
In Part 1 of this tutorial, I explained how to use the Alamofire and AlamofireImage libraries to asynchronously download and cache images to be displayed in a UICollectionView. At the end of that project, we still had a performance problem. UIImage by default waits until right before display to decode . . .
There are many options for persisting data between launches in Cocoa apps, including NSUserDefaults, NSKeyedArchiver / NSKeyedUnarchiver, Core Data, and a range of third-party frameworks. NSKeyedArchiver is a popular choice for projects that require more than the basic key-value storage . . .
Downloading and caching images are common tasks in iOS development, especially when using collection and table views. In this tutorial, we're going to use the popular Swift networking library Alamofire and its companion image library AlamofireImage to build an app that displays images of Glacier National Park.