public void SliderFlyWeight()
{
SliderFactory factory = new SliderFactory();
Slider character = factory.GetSlider('B');
string mensaje = character.Display(1);
Assert.AreEqual("Slider #1: Bacon Master - topped with American cheese and lots of bacon! $" + 2.39m, mensaje);
}
// Note that the ConcreteFlyweight classes are, of course, very similar to one another:
// they all have the same properties.This is critical to using Flyweight: all of the related objects must have
// the same definition(or at least reasonably close to the same definition).
static void Main(string[] args)
{
#region Publication
// Keen observers will probably already notice the problem:
// The Author value we’re passing into our tuple creation is always a new Author()
// instance in this example. Even though the string Name property value of the Author is the same in both cases,
// the underlying Author object is different, and therefore, the generated key that is used for comparison
// within the Library.GetPublication() method differs.
// The solution is to explicitly pass the same instance of Author to both our Book retrieval attempts,
// which we do here in Example2():
Example1();
Example2();
Example3();
#endregion
#region Sliders
// The Slider class has properties for Name, Cheese, Toppings, and Price
// (all of which are part of the intrinsic state of these objects)
// Build a slider order using patron's input
Console.WriteLine("Please enter your slider order (use characters B, V, Z with no spaces):");
var order = Console.ReadLine();
char[] chars = order.ToCharArray();
SliderFactory factory = new SliderFactory();
int orderTotal = 0;
//Get the slider from the factory
foreach (char c in chars)
{
orderTotal++;
Slider character = factory.GetSlider(c);
character.Display(orderTotal);
}
// Looking at the screenshot above, the FlyweightFactory will have only created new sliders for orders 1, 3, and 4,
// with every other order being a copy of those objects.This is the power of Flyweight:
// you can theoretically improve performance by only instantiating new objects on first creation.
Console.ReadKey();
#endregion
}
public static void Flyweight()
{
Console.WriteLine("Please enter your slider order (use characters B, V, Z with no spaces):");
var order = Console.ReadLine();
char[] chars = order.ToCharArray();
SliderFactory factory = new SliderFactory();
int orderTotal = 0;
//Get the slider from the factory
foreach (char c in chars)
{
orderTotal++;
Slider character = factory.GetSlider(c);
character.Display(orderTotal);
}
}
