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

# Higher-order Functions

- [Introduction](https://haskell.hpmeducation.com/higher-order-functions/introduction.md)
- [The map Function](https://haskell.hpmeducation.com/higher-order-functions/the-map-function.md)
- [The filter Function](https://haskell.hpmeducation.com/higher-order-functions/the-filter-function.md)