private static object Subtotal(List <Expression> p)
{
var fId = (int)(Double)p[0];
var tally = new Tally(p.Skip(1));
switch (fId)
{
case 1:
return(tally.Average());
case 2:
return(tally.Count());
case 3:
return(tally.CountA());
case 4:
return(tally.Max());
case 5:
return(tally.Min());
case 6:
return(tally.Product());
case 7:
return(tally.Std());
case 8:
return(tally.StdP());
case 9:
return(tally.Sum());
case 10:
return(tally.Var());
case 11:
return(tally.VarP());
default:
throw new ArgumentException("Function not supported.");
}
}