> For the complete documentation index, see [llms.txt](https://utoolkit.gamepangin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://utoolkit.gamepangin.com/design-pattern.md).

# Design Pattern

- [Singleton](https://utoolkit.gamepangin.com/design-pattern/singleton.md)
- [Publisher -> Subscriber](https://utoolkit.gamepangin.com/design-pattern/publisher-greater-than-subscriber.md)
- [Object Pooling](https://utoolkit.gamepangin.com/design-pattern/object-pooling.md)
- [State Machine](https://utoolkit.gamepangin.com/design-pattern/state-machine.md)