Like other Swift collections, attributed string views use indices, which are simply a position for some element in the collection. To do this, first I need to find where the punctuation is in the attributed string. Let’s say our designers told us to add a little bit of pizzazz to our thank-you message by making all punctuation a fun orange color. These views are Swift collections, which means the functions you are familiar with from types like Array are available here too. The two most important views are characters, which provides access to the string, and runs, which provides access to the attributes. Instead, in order to gain access to these properties, it has what we call views. The attributed string itself is not a collection of any single one of those things. As I mentioned, attributed string is a combination of characters, ranges, and a dictionary. And finally, I merge those attributes into both attributed strings. Here, I create a container and set some attributes on it, depending on the importance of my message. It’s a place you can hold attributes and values on their own without the string. Another useful tool is an attribute container. We’ll look at how to change just part of a string later. Here I’m setting the font and link on the whole string. This one is a reference to our website, so we set the link property to a URL. Next, we create another attributed string. This property, for example, is a SwiftUI Font. In struct AttributedString, all attributes are available directly, and they use the correct types. That’s as simple as setting the font property. I want to set an attribute on this entire string. First, we create an attributed string using a simple initializer. We’re going to build our thank-you message. Let’s take a brief tour of what you can do with the new AttributedString. This includes both compile time safety by using strong typing and also safety during unarchiving using Codable. Finally, it is built with safety and security in mind. As part of our commitment to making it easy to write inclusive software, AttributedString is now fully localizable. It also has the same character-counting behavior as Swift String. This year, we introduce a new struct AttributedString, which takes full advantage of all of the features that Swift provides us. Since the beginning of Foundation, we’ve had a reference type called NSAttributedString. As you can tell here, attributes can overlap. Part of the string is in bold and part is in italics. At the bottom here, I decided to add a short thank-you note. And at the end, it shows me a receipt with a list of everything I’ve ordered. I pick the food that I want, the size, the quantity. Here is an app I’m working on called Caffé. You’ll often find attributed strings in API that supports rich text. The most common attributes are defined by the SDK, but you can also create your own. Attributed strings allow you to associate attributes, which are key-value pairs, to a specific range of a string. An attributed string is a combination of characters, a set of ranges, and a dictionary. Let’s jump right in to attributed strings. It dramatically reduces the number of localized strings you need to provide while, at the same time, making your code simpler. And finally, we have a brand new feature called automatic grammar agreement. We rebuilt our formatters for Swift, making them faster, easier to use, and adding new features. We started at a low level, rethinking what an attributed string is in Swift. In this year’s releases, we have some of the biggest advancements ever in this API. Today I’d like to focus on something all apps need: internationalization and localization. It has plenty of features, including everything from file handling to networking and notifications. Welcome to “What’s new in Foundation.” The Foundation framework provides base functionality for all apps and frameworks. Hello, my name is Tony, and I'm an engineer on the Foundation team.
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