fn row_key(record: &HandoffRecord) -> StringExpand description
One row’s key: the seat, then the instant (RFC 3339 sorts by time), then the successor. The successor is in the key because two handoffs at one instant are still two rows.
fn row_key(record: &HandoffRecord) -> StringOne row’s key: the seat, then the instant (RFC 3339 sorts by time), then the successor. The successor is in the key because two handoffs at one instant are still two rows.