groupOf method

String groupOf(
  1. String id
)

The count column of id, given the prefixes the index uses.

Implementation

String groupOf(String id) {
  final dash = id.lastIndexOf('-');
  final prefix = id.substring(0, dash);
  final number = int.parse(id.substring(dash + 1));
  for (final g in groups) {
    if (g.holds(prefix, number)) return g.key;
  }
  return prefix;
}