Say I have these 3 classes: public class ClassParent { public string TestParent { get; set; } } public class ClassChild1 : ClassParent { public string TestChild1 { get; set; } } public class ClassChild2 : ClassParent { public string TestChild2 { get; set; } } Say, I've created plenty of objects of type ClassChild1...
In Objective C, if you are subclassing something, and are planning to override a method on the superclass, should you re-declare the superclass method in your subclass @interface? For example, if you are subclassing UIViewController (e.g. MyViewController), and you are planning to override "viewDidLoad" should you include that method in...
Hello, I'm a complete newbie to C# so excuse me if this looks weird. I have an abstract class called vefHlutir namespace Klasasafn { public abstract class vefHlutur { public abstract List<String> columnNames(); public abstract List<String> toStringList(); } } //Here is an object that inherits from this ab...
This works: >> class Foo >> def xyz() >> Foo.subclasses >> end >> end => nil >> class Bar < Foo >> end => nil >> class Quux < Bar >> end => nil >> Foo.new.xyz() => ["Quux", "Bar"] But this doesn't. User is a class in my application. >> User.subclasses NoMethodError: protected method `subclasses' called for #<Class:0x20b5188>...
I'm trying to make a new CLLocation subclass. This is the skeleton: #import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> @interface JFLocation : CLLocation { } @end #import "JFLocation.h" @implementation JFLocation @end When I build the class I'm getting this errors: Undefined symbols: ".objc_class_name_CLLocation"...
I can modify/access controls and MessageBox with ease in the MainWindow.xaml.cs file of my WPF application. However, when I create some folders and add classes there, I no longer have access to MessageBox nor do I have see the control names in the Intellisense dropdown. (This seems quite elementary but I'm new to C# and WPF) ...
HI ALL! As a part of my self-learning of Java I'm trying to complete one of the Java begginer assignments available here (very old stuff - 2001) The problem is that I don't know how to approach this challenge :( I will appreciate any suggestions as solution is not available any more, only link to zipped archives works fine. Regards, M...
Edit: changed class names. I'm using Fluent NHibernate (v 1.0.0.614) automapping on the following set of classes (where Entity is the base class provided in the S#arp Architecture framework): public class Car : Entity { public virtual int ModelYear { get; set; } public virtual Company Manufacturer { get; set; } } public class ...
I have a class called Level, which is a subclass of NSObject. Then I have a class called Level_1_1 which is a subclass of Level. Is it allowed to type like Level* aLevel = [Level_1_1 alloc]; instead of Level_1_1* theLevel = [Level_1_1 alloc]; ? :) I try it and I don't get any warnings, just wondering if it's okay to do? ...
(I am using python 2.7) The python documentation indicates that you can pass a mapping to the dict builtin and it will copy that mapping into the new dict: http://docs.python.org/library/stdtypes.html#mapping-types-dict I have a class that implements the Mapping ABC, but it fails: import collections class Mapping(object): def __i...
Hi All, I have a template list say, List<SuperClass*>* mList; for(int i = 0;i < mList->ElementsCount();i++) mList->DeleteElementAtIndex(i); in mList objects of subclasses are added. while on deleting object from the list, should i need to convert the object into corresponding subclasses and call delete method ...