overriding

I was doing some code review today and came across an old code written by some developer. It goes something like this public abstract class BaseControl { internal abstract void DoSomething(); } If you have a derived class within the same assembly, it would work public class DerivedControl : BaseControl { internal override void DoSomething() { } } But deriving the base class in a different assembly would give compile time error DerivedControl does not implement inherited abstract member 'BaseControl.DoSomething() That got me thinking. Why would anyone declare a method as internal abstract ? The

My understanding was that static variables and static methods are of a class, not of the class objects. So an Override of a static method won't work in Java, as for overriding we need an instance of a class to be created. But I was trying something today that contradicted my knowledge of Java. Please follow this code: class Parent{ public static void doIt(){ System.out.println("In static method 'doit' of class Parent "); } } class Child extends Parent{ public static void doIt(){ System.out.println("In static method 'doit' of class Child "); } } public class StaticPractise{ public static void

Searching for a way to change the "Close" button text/functionality of a UILocalNotification ... I've found that it's impossible to access/call the text/function from another object, although subclassing UILocalNotification should allow implementation method overrides ... not to mention the creation of an accessor to get/set the "Close" button text field. What do you guys think about this? What would Apple? Has anyone tried?... EDIT: 12/21/2011 12:01 PM The question that I'm asking involves an understanding of oop: late/early binding, dynamic method lookup, and declared type vs. runtime type

How would I write the following C# code in F#? namespace Shared { public class SharedRegistry : PageRegistry { public SharedRegistry(bool useCache = true) : base(useCache) { // Repositories ForRequestedType<IAddressRepository>().TheDefaultIsConcreteType<SqlAddressRepository>(); ForRequestedType<ISharedEnquiryRepository>().TheDefaultIsConcreteType<SharedEnquiryRepository>(); // Services ForRequestedType<IAddressService>().TheDefaultIsConcreteType<AddressService>(); ForRequestedType<ISharedEnquiryService>().TheDefaultIsConcreteType<SharedEnquiryService>(); } } } As is as far as I have managed,

Is there a way to dynamically detect from within a child class if its overriding its parents methods? Class A { - methodRed; - methodGreen; - methodBlue; } Class B inherits A { - methodRed; } From the example above I would like to know if class B is able to dynamically detect that only -methodRed; was overridden. The reason am wondering about this approach versus some other possibilities is because I have dozens of custom views that will be changing there appearance. It would be a lot less code if I could dynamically detect the overridden methods versus keeping track. This is fairly

I'm trying to understand GAS's behavior of .code16. From the manual, it seems in 16-bit section, for 32-bit operands or instructions, a 66H operand override prefix will be produced for the instruction encoding. Does that mean .code16 movw %eax, %ebx is legal in such mode? Then the code cannot run on 16-bit processor? Dirk Wolfgang Glomp These are legal instructions for 80386+. Starting with the 80386 we can use operandsize- and addresssize- override prefixes. Those prefixes can be used in combination with the 16 bit address mode and with the 32 bit address mode. Additional it can be used with

Say you have a data-structure (borrowed from this question ): data Greek = Alpha | Beta | Gamma | Delta | Eta | Number Int Now one can make it an instance of Show by appending deriving Show on that instruction. Say however we wish to show Number Int as: instance Show Greek where show (Number x) = show x -- ... The problem is that one must specify all other parts of the Greek data as well like: show Alpha = "Alpha" show Beta = "Beta" For this small example that's of course doable. But if the number of options is long, it requires a large amount of work. I'm wondering whether it is possible to