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  1. public abstract class Factory<T> where T : class {
  2.     public abstract T Build<U>(U obj) where U : class;
  3. }
  4. public class Quadrado {
  5.     public int Largura { get; set; }
  6.     public int Altura { get; set;}
  7. }
  8. public class Retangulo {
  9.     public int Largura { get; set; }
  10.     public int Altura { get; set; }
  11. }
  12. public class QuadradoFactory: Factory<Quadrado> {
  13.     public override Quadrado Build<U>(U o) {
  14. 		var obj = o as Retangulo;
  15. 		if (obj == null) return null;
  16. 		return new Quadrado() { Largura = obj.Largura, Altura = obj.Altura };
  17. 	}
  18. }
  19. public class Program {
  20.     public static void Main() {
  21.         var f = new QuadradoFactory();
  22.         var r = new Retangulo(){ Largura = 2, Altura = 4 };
  23.         var q = f.Build<Retangulo>(r);
  24.         System.Console.WriteLine("Largura: " + q.Largura + " Altura: " + q.Altura);
  25.     }
  26. }
  27.  
  28. //https://pt.stackoverflow.com/q/325885/101
Success #stdin #stdout 0.02s 15892KB
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Largura: 2 Altura: 4
https://ideone.com/6EWibE
language:
C# (gmcs 5.20.1)
created:
3 years ago
visibility:
public

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