[GSoC] Dataframes for D

[jmh530]

On Wednesday, 29 May 2019 at 18:00:02 UTC, Prateek Nayak wrote:
> [snip]

Glad to see progress being made on this!

Somewhat tangentially on the interoperability, I have also made 
quite a bit of use with R's data.frames. One difference between 
that and what I have seen of the implementation is that R's 
data.frames allow for different columns to be different types. 
This makes certain kinds of analysis of groups very easy. For 
instance, right now I'm working with a dataset whose columns are 
doubles, dates, integers, bools, and strings. I can do the 
equivalent of groupby on the strings as "factors" in R and it's 
pretty straightforward to get everything working nicely.