@badkins and others: I have written an implementation of srfi 179 (multidimensional arrays). https://github.com/soegaard/srfi-array Bells and whistles are missing so I am interested in feedback.

Wow. Looks like a fair amount of work - thanks for doing that! I think this is certainly useful on its own, but I need to come up to speed with the state of the art in Python before I can consider what may, or may not, be suitable to be built upon for other things such as a data frame. The other folks who are already working with such things can provide better feedback.

https://github.com/github/gitignore/pull/3943\|https://github.com/github/gitignore/pull/3943

Looks like someone made an update

https://www.reddit.com/r/scheme/comments/rynymb/srfi_231_nonempty_intervals_and_generalized/

Just saw it come up in Reddit