static MoneyAmount Reserve(MoneyAmount cost)
{
decimal factor = 1;
if (IsHappyHour)
{
factor = 0.5M;
}
Console.WriteLine("\nReserving an item that cost: {0}.", cost);
return(cost.Scale(factor));
}
// Reference types are susceptible to aliasing bugs;
// By changing contents of an existing object we are risking an aliasing bug to apear;
// Try to avoid instantiating objects directly;
// Modification to the constructor requires update in all consumers;
// Let objects of the class construct subsequent objects;
private static MoneyAmount Reserve(MoneyAmount cost)
{
decimal factor = 1;
var newCost = cost;
if (IsHappyHour)
{
// Create new object when content should change;
factor = .5M;
}
Console.WriteLine($"\nReserving an item that costs {cost}");
return(cost.Scale(factor));
}