problem about method-hiding-Collection of common programming errors

12 years ago
admin
2 minutes

  • max
    oop class inheritance override method-hiding
    I’m trying to understand whether the answer to the following question is the same in all major OOP languages; and if not, then how do those languages differ.Suppose I have class A that defines methods act and jump; method act calls method jump. A’s subclass B overrides method jump (i.e., the appropriate syntax is used to ensure that whenever jump is called, the implementation in class B is used).I have object b of class B. I want it to behave exactly as if it was of class A. In other words, I wa

  • Groo
    c# methods method-hiding
    Per MSDN, the “new” keyword when used for method hiding only suppresses a warning. http://msdn.microsoft.com/en-us/library/435f1dw2.aspxDo I really need this “new” keyword to perform method hiding? If I have a child class that has the same method name but doesn’t explicitly state that it is overriding, isn’t that the same thing essentially, I just get a warning? Please tell me if my understanding is correct. Thanks

  • fearofawhackplanet
    c# unit-testing inheritance method-hiding method-overriding
    public class Foo {public string Test(){return GetName();}public string GetName(){return “Foo”;} }public class Bar : Foo {public new string GetName(){return “Bar”;} }new Foo().Test(); // Foonew Bar().Test(); // also FooI was trying to create a “wrapper” for Foo so that I could unit test the behaviour of Test() when GetName() produces unexpected values. I cannot directly influence the behaviour of GetName() in Foo as it is dependent on ASP.NET pipeline events.I was hopingnew Bar().Test();would ret

  • S.L. Barth

  • Groo
    c# inheritance interface method-hiding
    I am getting the following Compiler Warning:’Resources.Foo.GetType()’ hides inherited member ‘object.GetType()’. Use the new keyword if hiding was intended. Resources.NET\Resources\Class1.cs 123 20 Resourcesfor this (very simplified) code:public interface IFoo {int GetType();string GetDisplayName(); }public class Foo : IFoo {public int GetType() { return 3; } *** Warning: points to here (line 123)***public string GetDisplayName() { return “Foo”; } }Note, what I don’t get is why the GetDis

Web site is in building