Filter columns

[pfitzseb]

This came up on slack at some point:

Peter Deffebach  5 days ago
Stata is still my favorite IDE for working with data stuff. The UI for their Data Viewer is really good. Little search bar on the side which allows you to narrow down what columns you look at. But I'd be concerned about speed if that were done in TableView. Stata is a QT app and they must do some mmapping to get the data to show so quickly

Sebastian Pfitzner  5 days ago
well, TableView should be as fast as whatever filters the data, and I'm not sure how Julia did in that regard tbh

Peter Deffebach  5 days ago
I ended up doing showtable(df[!, r"expression"]) which works well though.