public void Add(Element element, bool negative = false)
{
if (negative)
{
Negatives = Negatives.Concat(Items(element));
}
else
{
Positives = Positives.Concat(Items(element));
}
}
public void Add(CharClassSet set, bool invert = false)
{
Positives = Positives.Concat(!invert ? set.Positives : set.Negatives);
Negatives = Negatives.Concat(!invert ? set.Negatives : set.Positives);
}
