kees ter brugge

I've added the function `filter-cols`. Say I want to filter columns based on some predicate like a regular expression, their membership of some collection of keywords or some composition of...

Thanks for your feedback :) - I'll remove `select-cols-regex`. - I'll think about how to make `compare-by` a bit cleaner. Question: any reason you defined the function `select-cols` instead of...

That makes sense. I've added the function `derive-cols*` to convey how I'd like the `derive-cols` function to behave. I don't propose to include it as is. The benefit of `derive-cols*`...

It might be interesting to look at [datatables](http://datatables.net) since it offers sort, search and [column filter](https://datatables.net/extensions/fixedheader/examples/options/columnFiltering.html). R already gets a lot of mileage out of datatables: rstudio uses datatables [within...

Now that think more about it, it would be cool if the [table editor](https://rstudio.github.io/DT/) and [row selection](https://yihui.shinyapps.io/DT-rows/) functionality of [datatables](http://datatables.net) can be exposed as signals that can be listened to....