static void Main(string[] args)
{
Product[] products = new Product[]
{
new Product("Apple", Color.Green, Size.Small),
new Product("Tree", Color.Green, Size.Large),
new Product("House", Color.Blue, Size.Large)
};
var bf = new BetterFilter();
foreach (var p in bf.Filter(products,
new AndSpecification <Product>(new ColorSpecification(Color.Green), new SizeSpecification(Size.Large))))
{
Console.WriteLine($"name : {p.Name}");
}
foreach (var p in bf.Filter(products, new ColorSpecification(Color.Green)))
{
Console.WriteLine($"name : {p.Name}");
}
}
static void SOLIDOpenClosed()
{
var apple = new Product("Apple", Color.Green, Size.Small);
var tree = new Product("Tree", Color.Green, Size.Large);
var house = new Product("House", Color.Blue, Size.Large);
Product[] products = { apple, tree, house };
var pf = new ProductFilter();
Console.WriteLine("Green products (old):");
foreach (var p in pf.FilterByColor(products, Color.Green))
{
Console.WriteLine($" - {p.Name} is green");
}
// ^^ BEFORE
// vv AFTER
var bf = new BetterFilter();
Console.WriteLine("Green products (new):");
foreach (var p in bf.Filter(products, new ColorSpecification(Color.Green)))
{
Console.WriteLine($" - {p.Name} is green");
}
Console.WriteLine("Large products");
foreach (var p in bf.Filter(products, new SizeSpecification(Size.Large)))
{
Console.WriteLine($" - {p.Name} is large");
}
Console.WriteLine("Large blue items");
foreach (var p in bf.Filter(products,
new BanchOfSpecifications <Product>(new ColorSpecification(Color.Blue), new SizeSpecification(Size.Large)))
)
{
Console.WriteLine($" - {p.Name} is big and blue");
}
}
public static void Test()
{
var apple = new Product("Apple", Color.RED, Size.SMALL);
var tree = new Product("Tree", Color.GREEN, Size.LARGE);
var house = new Product("House", Color.BLUE, Size.LARGE);
Product[] products = { apple, tree, house };
// INCORRECT IMPLEMENTATION
/*
* var pf = new ProductFilter();
* WriteLine("Green products (incorrect):");
*
* foreach (var p in pf.FilterByColor(products, Color.GREEN)) {
* WriteLine($" - {p.Name} is green");
* }
*/
// CORRECT IMPLEMENTATION
var bf = new BetterFilter();
WriteLine("Green products (correct):");
foreach (var p in bf.Filter(products, new ColorSpecification(Color.GREEN)))
{
WriteLine($" - {p.Name} is green");
}
WriteLine("Large blue items");
foreach (var p in bf.Filter(
products,
new AndSpecification <Product>(
new ColorSpecification(Color.BLUE),
new SizeSpecification(Size.LARGE)
)))
{
WriteLine($" - {p.Name} is big and blue");
}
}
static void Main(string[] args)
{
var apple = new Product("Apple", Color.Green, Size.Small);
var tree = new Product("Tree", Color.Green, Size.Large);
var house = new Product("House", Color.Blue, Size.Large);
Product[] products = { apple, tree, house };
var pf = new ProductFilter();
Console.WriteLine("Green Products (old): ");
foreach (var p in pf.FilterByColor(products, Color.Green))
{
Console.WriteLine($"- {p.Name} is green");
}
var bf = new BetterFilter();
Console.WriteLine("Green Prodcuts (new) : ");
foreach (var p in bf.Filter(products, new ColorSpecification(Color.Green)))
{
Console.WriteLine($"- {p.Name} is green");
}
}