public static IEnumerable <T> Split <T>(this IEnumerable <T> source)
{
if (source == null)
{
return(Enumerable.Empty <T>());
}
if (source as ICollection <T> != null)
{
return(source);
}
return(SplittedEnumerable <T> .Create(source));
}
internal Enumerator(SplittedEnumerable <T> parent)
{
this.parent = parent;
parent.createdEnumerators.Add(this);
Reset();
}