Recipe 3. Create a Simple Text Document

Highlights

Creating an auxiliary document Using Xcode snapshots Creating a new class in Xcode Creating a new class in Interface Builder Allocating and initializing objects Adding and configuring a Cocoa text view Subclassing NSDocumentController Using Uniform Type Identifiers to identify document types and ownership Writing data to disk and reading it from disk

In this recipe and several following recipes, you start to write some serious code. In the process, you learn more about how to use the Xcode code editor, in which you will spend most of your time as a Cocoa developer, as well as learning more about Interface Builder. You also learn common techniques for structuring your code files to make them easier to read and maintain over time.