Interface UseDrillResult<Q>

Answer the current round; the time since it was shown is recorded with it. correct says how an answer judged elsewhere went — one played on an instrument — otherwise the choice is checked against the question

The drill as it stands

End the drill now, keeping the rounds answered: the summary is of what was done

Every round has been asked, or the drill was finished early

The round being asked, from 0

Questions the drill was drawn with, however many were answered: for drillRecord

Move on to the next round

The round's question, or null once the drill is finished

Start over: the same drill again — all of it, though it was finished early — or another from a new seed or length

The round being asked, or null once the drill is finished

How the drill has gone so far

Questions in the drill — once finished early, those answered