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

# Utilities & Data Structures

Packages for data structures and utility types.

* [map](/packages/utilities/map.md) - An ordered key-value map type.
* [set](/packages/utilities/set.md) - A set type.
* [option](/packages/utilities/option.md) - Optional values (`some`/`none`).
* [result](/packages/utilities/result.md) - Success/error result values.
* [ptr](/packages/utilities/ptr.md) - Low-level pointer operations.