nullsFirst property

Comparator<T?> nullsFirst

Returns a Comparator that orders null values before non-null values.

Implementation

Comparator<T?> get nullsFirst => (a, b) {
      if (a == null && b == null) {
        return 0;
      } else if (a == null) {
        return -1;
      } else if (b == null) {
        return 1;
      }
      return this(a, b);
    };