/// <summary>
/// Shifts a subset of a list of items in place.
/// </summary>
public static void Shift <T>(this IList <T> list, int offset, int from, int to)
{
if (list is T[] arr)
{
ArrayExtensions.Shift(arr, offset, from, to);
return;
}
offset = SlurMath.RepeatPositive(-offset, to - from);
Reverse(list, from, from + offset);
Reverse(list, from + offset, to);
Reverse(list, from, to);
}