sequence method
Rearranges the sequence of a list based on a 0-based index.
The function takes an index and a list of items. It returns a new list where the items are rearranged, starting from the specified index and wrapping around to the beginning.
Throws an ArgumentError if the index is out of range.
Example:
final data = ['a', 'b', 'c', 'd', 'e'];
final result = data.sequence(2); // ['c', 'd', 'e', 'a', 'b']
Implementation
List<E> sequence(int index) {
final items = toList();
if (index < 0 || index >= items.length) {
throw ArgumentError(
'Index must be between 0 and the length of the items list minus one.',
);
}
return [...items.sublist(index), ...items.sublist(0, index)];
}