What is consuming?

What is consuming?

In the context of WWDC sessions, "consuming" can refer to two different concepts depending on the session:

1. In-App Purchases:

   • Consumables: These are products that can be used up and repurchased by the customer as desired. An example of a consumable is a pack of 100 gems which can be used to purchase in-game items. The workflow for a consumable purchase begins when the customer buys a consumable in your app. The customer's device receives a signed transaction that your app can then send to your server to validate the transaction and dispense the content. Additionally, the App Store server sends a one-time charge notification to your server with the same information (Explore App Store server APIs for In-App Purchase).

2. Swift Programming:

   • Consuming Noncopyable Types: In Swift, consuming a variable takes its value, leaving that variable uninitialized. This is particularly relevant for noncopyable types. When a function consumes a parameter, it takes the argument away from its caller, meaning the function will have full ownership of the value and can mutate it. For example, if you have a function that formats a disk, consuming the disk means the function will take ownership of the disk and the caller will no longer have access to it (Consume noncopyable types in Swift).

Relevant Sessions

• Explore App Store server APIs for In-App Purchase
• Consume noncopyable types in Swift

Session Chapter Markers

• Explore App Store server APIs for In-App Purchase

  • 0 = Introduction
  • 292 = Purchase lifecycle
  • 831 = Delivering content
  • 1255 = Subscriptions and Offers

• Consume noncopyable types in Swift

  • 0 = Introduction
  • 30 = Agenda
  • 50 = Copying
  • 425 = Noncopyable Types
  • 710 = Generics
  • 1152 = Extensions
  • 1284 = Wrap up