4. Advanced Features

• 4.1. Assertions and Contract Programming
• 4.2. Error Handling
• 4.3. Parameter Directions
• 4.4. Collections
  • 4.4.1. ArrayList<G>
  • 4.4.2. HashMap<K,V>
  • 4.4.3. HashSet<G>
  • 4.4.4. Read-Only Views
• 4.5. Methods With Syntax Support
• 4.6. Multi-Threading
  • 4.6.1. Threads in Vala
  • 4.6.2. Resource Control
• 4.7. The Main Loop
• 4.8. Asynchronous Methods
  • 4.8.1. Examples
• 4.9. Weak References
• 4.10. Ownership
  • 4.10.1. Unowned References
  • 4.10.2. Methods ownership
  • 4.10.3. Properties ownership
  • 4.10.4. Ownership Transfer
• 4.11. Variable-Length Argument Lists
• 4.12. Pointers
• 4.13. Non-Object classes
• 4.14. D-Bus Integration
• 4.15. Profiles