public static MoneyValue Sum <T>(this IEnumerable <T> source, Func <T, MoneyValue> selector)
{
return(MoneyValue.Of(source.Select(selector).Aggregate((x, y) => x + y)));
}
public MoneyValueOperationMustBePerformedOnTheSameCurrencyRule(MoneyValue left, MoneyValue right)
{
_left = left;
_right = right;
}
public static MoneyValue Of(MoneyValue value)
{
return(new MoneyValue(value.Value, value.Currency));
}