December 9th, 2018
Xcode 10 removes support for Subversion. If you want to continue to use Subversion with Xcode, stick with Xcode 9. Alternatively, you can switch to git or use another tool for Subversion.
November 12th, 2018
I have a two-part tutorial on making document-based iOS apps over at Swift Dev Journal.
November 6th, 2018
In Xcode 10 you can tell Xcode to run your tests in random order. Open the scheme editor for your project and select the Test step.
Click the Options button next to the test target to open a popover. Select the Randomize execution order checkbox to run your tests in random order.
October 29th, 2018
In Xcode 10 you no longer need to hold down the Option key to clean the build folder. You can just choose Product > Clean Build Folder.
October 24th, 2018
If you create a document-based app project in Xcode, select the app target in the project editor, and click the Info button, you will see sections for imported and exported UTIs. If you have any of the following questions:
Keep reading because this articles answers those questions.
A UTI is a Uniform Type Identifier that uniquely identifies a file type. Apple has a list of system-declared UTIs, but it’s not being actively maintained. For example a plain text file has the UTI
public.plain-text. Most common file types have
public at the start of their UTIs.
If you create a new file type, you must create a UTI for it. The UTI should take the form
Use imported UTIs when your app edits file types that it doesn’t own. Suppose you’re developing an image editor. Your image editor edits image files in multiple file formats, such as PNG, JPEG, and TIFF. You would add an imported UTI for each file type the image editor can edit.
Use an exported UTI for any file types your app owns. When you create a new file type for your app’s documents, your app owns that file type, and you should create an exported UTI for the file type. The exported UTI lets the operating system and other apps know about the new file type.