public static IEnumerable <T> CreateEnumerator <T>(InputIterator <T> begin, InputIterator <T> end)
{
begin = IteratorUtil.Clone(begin);
while (!begin.Equals(end))
{
yield return(begin.Read());
begin.MoveNext();
}
}
public static int Distance <T>(InputIterator <T> first, InputIterator <T> last)
{
first = IteratorUtil.Clone(first);
int result = 0;
while (!first.Equals(last))
{
first.MoveNext();
++result;
}
return(result);
}
public static bool IsOneElementRange <T>(InputIterator <T> first, InputIterator <T> last)
{
first = IteratorUtil.Clone(first);
first.MoveNext();
return(first.Equals(last));
}
public static ListIterator <T> AdvanceCopy <T>(ListIterator <T> iter, int distance)
{
iter = IteratorUtil.Clone(iter);
Advance(iter, distance);
return(iter);
}
public static RandomAccessIterator <T> AdvanceCopy <T>(RandomAccessIterator <T> iter, int distance)
{
iter = IteratorUtil.Clone(iter);
Advance(iter, distance);
return(iter);
}
public static BidirectionalIterator <T> AdvanceCopy <T>(BidirectionalIterator <T> iter, int distance)
{
iter = IteratorUtil.Clone(iter);
Advance(iter, distance);
return(iter);
}
