Function uniqueStateBlockNIDs

roomserver/state/state.go:1285–1287

(nids []types.StateBlockNID)

func (s stateBlockNIDSorter) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }

func uniqueStateBlockNIDs(nids []types.StateBlockNID) []types.StateBlockNID {
	return nids[:util.SortAndUnique(stateBlockNIDSorter(nids))]
}

// Map from event type, state key tuple to numeric event ID.
// Implemented using binary search on a sorted array.