# Design Patterns

- [Requests and Actions](/programming-training/code/design-patterns/requests-and-actions.md): Custom pattern made specifically for sequencing in FRC
- [Singleton](/programming-training/code/design-patterns/singleton.md)
- [Strategy](/programming-training/code/design-patterns/strategy.md)
- [Observer](/programming-training/code/design-patterns/observer.md)
- [Builder](/programming-training/code/design-patterns/builder.md)
- [Factory](/programming-training/code/design-patterns/factory.md)