我對WCF服務工作中的對象定義如下繼承: - public class Test1
{
public string s {get;set;}
public string a {get;set;}
}
public class Test2
{
public string u {get;set;}
public string v {get;set;}
}
pub
與同類型對象的對象樹的深度我有這樣的對象: public class dtHeader
{
public dtHeader ParentHeader { get; set; }
public string HeaderText { get; set; }
public string DataField { get; set; }
public bool V
我已閱讀有關generics get and put rule應該阻止你加入Banana到List<? extends Fruit>: public abstract class Fruit { }
public class Banana extends Fruit { }
public class Apple extends Fruit { }
List<? extends Fruit>