Makes sense.
I suggest we wait for two days, just in case there are any objections.

It would be really useful if you could also pass it a unit of time, i.e. second|minute|hour|day|week|month|year. This would make time series stuff way easier.

@marshall007 I believe the current implementation of r.range() is only for numbers. Would you mind opening a separate issue for extending it to dates (there's also the question of whether these terms should honor leap years etc.)?

@marshall007 I've just opened #3149 which proposes to support dates and floating point numbers.

@mlucy just suggested naming the optarg stride instead of step, jotting it down here so I won't forget.

I would prefer to hold off on this until the next ReQL discussion period, just because it can be a distraction to settle ReQL proposals in the middle of a release cycle, but if people think it's essential to the command then I guess it's OK to do it as part of 1.16.

I have no strong opinion on stride vs. step. We should use whatever seems most common.

I'm used to that parameter being named stride, but as @mlucy says it's not critical. The user can always work around it with r.map.

@mlucy The initial implementation of #875 is enough to support #2574 thus this proposal is non-essential in my opinion. Also, due to its intricate relationship with #3149, which will require a bit of discussion, I agree we should hold it off until the next ReQL discussion period.

I originally thought of this as a straight-forward ammendment to the range command. But since at least the name of the opt arg needs a little discussion, I'm going to move this into subsequent.

I have a table that stores documents with an effective date range and I'd like to be able to efficiently query for the active ones on a given date. The step optarg proposed here + date support from #3149 would make this a lot easier.

table.indexCreate(
  'day',
  r.range(r.row('date_start').date(), r.row('date_end').date(), { step: 'day' }),
  { multi: true }
)

table.getAll(r.now().date(), { index: 'day' })

I think this is a fairly compelling use-case. I imagine there are plenty of other interesting cases where the step optarg would be useful in secondary index functions.

Interesting use