public double CalculateDividendYield(Stock stock)
{
if (stock.Type == StockType.Common)
{
return new CommonDividendYieldCalculator(stock.LastDividend, stock.Price).Calculate();
}
return new PreferredDividendYieldCalculator(stock.FixedDividend.GetValueOrDefault(), stock.ParValue, stock.Price).Calculate();
}
public double CalculatePeRatio(Stock stock)
{
return new PeRatioCalculator(stock.Price, stock.LastDividend).Calculate();
}