class Double : IScalarSet
    {
        double _double;

        public Double(double d)
        {
            _double = d;
        }

        #region IScalarSet Members

        public double GetScalar(int index)
        {
            return IsValid(index) ? _double : -999.999;
        }

        #endregion

        #region IValueSet Members

        public int Count
        {
            get { return 1; }
        }

        public bool IsValid(int index)
        {
            return index == 0;
        }

        #endregion
    }