compareTo method

int compareTo(dynamic other)

Compares this object to another object.

Returns a value like a Comparator when comparing this to other. That is, it returns a negative integer if this is ordered before other, a positive integer if this is ordered after other, and zero if this and other are ordered together.

The other argument must be a value that is comparable to this object.

Implementation

int compareTo(other) {
  if (other == null) return 1;
  if (other is AbstractKey) {
    if (key == null && other.key == null) return 0;
    return key!.compareTo(other.key);
  }
  return -1;
}