difference method

@override TableSet<E> difference(Set<Object?> other)

Creates a new Database with the records of this Database that are not in other.

That is, the returned Database contains all the records of this Database that are not elements of other according to other.contains.

Implementation

@override
TableSet<E> difference(Set<Object?> other) {
  final result = TableSet<E>()..addAll(this);
  result.where(other.contains).forEach(result.remove);
  return result;
}