Contacts

1. Essentials

   Covers Accessing the contact store, Accessing a person’s contact data using Contacts and ContactsUI, CNContactStore, NSContactsUsageDescription.

2. Contact data

   Covers CNContact, CNMutableContact, Data Objects, Contact Keys.

3. Fetch and save requests

   Covers CNContactFetchRequest, CNFetchRequest, CNFetchResult, CNSaveRequest.

4. Change history data

   Covers CNChangeHistoryAddContactEvent, CNChangeHistoryAddGroupEvent, CNChangeHistoryAddMemberToGroupEvent, CNChangeHistoryAddSubgroupToGroupEvent.

5. Formatters

   Covers CNContactFormatter, CNPostalAddressFormatter, CNContactVCardSerialization, CNContactsUserDefaults.

6. Errors

   Covers Error Information.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.

• ColorSync Graphics and Games
• Combine App Services
• Compositor Services Graphics and Games
• Compression System
• Compute Graph Graphics and Games
• ContactProvider App Services
• Contacts UI App Services
• Core AI App Services
• Core Animation Graphics and Games
• Core Audio Media
• Core Audio Types Media
• Core Bluetooth System