Value  Convert::Format(const Value& q) const {
	if(IsVoid(q) || q.IsNull()) return String();
	switch(q.GetType()) {
	case INT_V:
		return IntStr((int)q);
	case DOUBLE_V:
		return DblStr((double)q);
	case DATE_V:
		return ::Format(Date(q));
	case TIME_V:
		return ::Format(Time(q));
	case STRING_V:
	case WSTRING_V:
		return q;
	}