Sorts this list according to the order specified by the compare function.
The compare function must act as a Comparator.
List<String> numbers = ['one', 'two', 'three', 'four'];
// Sort from shortest to longest.
numbers.sort((x, y) => x.length.compareTo(y.length));
numbers.join(', '); // 'one, two, four, three'
The default List implementations use Comparable.compare if
compare is omitted.
List<int> nums = [13, 2, -11];
nums.sort();
nums.join(', '); // '-11, 2, 13'
Source
void sort([int compare(E a, E b)]) {
if (compare == null) {
var defaultCompare = Comparable.compare;
compare = defaultCompare;
}
Sort.sort(this, compare);
}