flex-cartesian

https://github.com/Yuri-Rassokhin/flex-cartesian

Flexible and human-friendly Cartesian product enumerator for Ruby. Supports functions and conditions on cartesian, dimensionality-agnostic/dimensionality-aware iterators, named dimensions, tabular output, lazy/eager evaluation, progress bar, import from JSON/YAML, and export to Markdown/CSV. Code example: https://github.com/Yuri-Rassokhin/flex-cartesian/blob/main/README.md#example