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  • Secure Session is Themis's stateful encrypted channel: peers perform a handshake, derive ephemeral session keys, and then exchange messages with forward secrecy over any transport you supply.
  • These are three distinct levels of organisation in an Xcode workspace.
  • Use separate Xcode Schemes, Build Configurations, Bundle Identifiers, and Firebase plists — one set per environment.
  • To create a custom Xcode File Template from scratch, create a .xctemplate directory inside ~/Library/Developer/Xcode/Templates/File Templates/<Category>/, add a TemplateInfo.plist declaring the…

Answer: These are three distinct levels of organisation in an Xcode workspace.

  • Project — the .xcodeproj file; top-level container holding everything
  • Target — a single build product (app, framework, extension, test suite)
  • Scheme — defines what to build, run, test, profile, and archive

Practical relationships:

Project (MyApp.xcodeproj)
  ├── Target: MyApp          ← the main app
  ├── Target: MyAppTests     ← unit tests
  ├── Target: MyAppUITests   ← UI tests
  ├── Target: MyWidget       ← widget extension
  └── Target: NetworkKit     ← internal framework

Scheme: MyApp
  ├── Build: MyApp + MyAppTests
  ├── Run: MyApp (Debug config)
  ├── Test: MyAppTests + MyAppUITests
  └── Archive: MyApp (Release config)

When to add targets:

  • App extensions (widgets, share extensions, notification service)
  • Internal frameworks you want to share across apps
  • White-label apps with different bundle IDs and assets