group_by_ + arrange_

[mplourde]

arrange_ used to respect groupings. Now I often find myself using the idiom do(arrange_(., ~cpm)) to order groups individually for, say, a cumulative sum along time within groups.

Would it be feasible to add an argument to arrange_ or create a new function, say, group_arrange_ to encapsulate this?

Thank you.

[hadley]

Yeah, I'll bring this back as an option.

[hadley]

Adding this will need to wait until after the NSE rewrite since additional arguments to the generic are currently captured in .dots