public static T FoldR <T>(T start, IEnumerable <T> elements, FoldHandler <T> foldHandler)
{
T akt = start;
foreach (T element in elements)
{
akt = foldHandler(akt, element);
}
return(akt);
}
public static T FoldR <T>(T start, IEnumerable <T> elements, FoldHandler <T> foldHandler) => elements.Aggregate(start, (current, element) => foldHandler(current, element));
