[scottlocklin]

You should try using R; the real world performance is actually better than Julia in every way that matters. Yes, Julia has a better data frame object; that's why we use data.tables().

Also Wes probably got the idea for row indeces from R.

[disgruntledphd2]

The idea for row indices 100% comes from R, as it's been in S for longer than I've been alive ;)