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();
WriteLine("Green products (old):");
foreach (var p in pf.FilterByColor(products, Color.Green))
{
WriteLine($" - {p.Name} is green");
}
// ^^ BEFORE
// vv AFTER
var bf = new BetterFilter();
WriteLine("Green products (new):");
foreach (var p in bf.Filter(products, new ColorSpecification(Color.Green)))
{
WriteLine($" - {p.Name} is green");
}
WriteLine("Large products");
foreach (var p in bf.Filter(products, new SizeSpecification(Size.Large)))
{
WriteLine($" - {p.Name} is large");
}
var largeGreenSpec = new ColorSpecification(Color.Green)
& new SizeSpecification(Size.Large);
//var largeGreenSpec = Color.Green.And(Size.Large);
WriteLine("Large blue items");
foreach (var p in bf.Filter(products,
new AndSpecification <Product>(new ColorSpecification(Color.Blue),
new SizeSpecification(Size.Large)))
)
{
WriteLine($" - {p.Name} is big and blue");
}
}
static void Main(string[] args)
{
//object initil.
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();
WriteLine("Green products (old):");
foreach (var p in pf.FilterByColor(products, Color.Green))
{
WriteLine($" - {p.Name} is green");
}
}
static void Main(string[] args)
{
var apple = new Product("Apple", Color.Green, Size.Small);
var tree = new Product("Tree", Color.Green, Size.Large);
var house = new Product("House", Color.Blue, Size.Large);
Product[] products = { apple, tree, house };
var pf = new ProductFilter();
WriteLine("Green products (old):");
foreach (var p in pf.FilterByColor(products, Color.Green))
{
WriteLine($" - {p.Name} is green");
}
// ^^ BEFORE
// vv AFTER
//abstract actual enum into different func/obj then add different obj into the actual func instead of modifying the filter func
var bf = new BetterFilter();
WriteLine("Green products (new):");
foreach (var p in bf.Filter(products, new ColorSpecification(Color.Green)))
{
WriteLine($" - {p.Name} is green");
}
WriteLine("Large products");
foreach (var p in bf.Filter(products, new SizeSpecification(Size.Large)))
{
WriteLine($" - {p.Name} is large");
}
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");
}
}
