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);
};