public static T ElementAtCycle <T>(this IEnumerable <T> source, int index, int count)
{
index = StdUtils.CycleIndex(index, count);
if (source is IList <T> list)
{
return(list[index]);
}
return(source.ElementAt(index));
}
public static T ElementAtCycle <T>(this ICollection <T> source, int index)
{
index = StdUtils.CycleIndex(index, source.Count);
if (source is IList <T> list)
{
return(list[index]);
}
return(source.ElementAt(index));
}
