I think this is about covariance but I\'m weak on the topic... I have a generic Event class used for things like database persistance, let\'s say like this:
It\'s like this, I created a UITableViewCell subclass called NewsItemCell, then I wanna use it in my FirstViewController.m, then I tried to import it, but the compiler keeps telling me this
Good evening, I am developing a set of Java classes so that a container class Box contains a List of a contained class Widget. A Widget needs to be able to specify relationships with other Widgets. I
I\'m using a HtmlEditor control inside a Windows Form. I got the control from this page: http://windowsclient.net/articles/htmleditor.aspx
Although I\'ve searched the Board and used google, I di开发者_StackOverflowdn\'t get any useful results.
Maybe its something stupid, but I\'m having a problem with a subclass of a DataGridView Control in VS2005 C#.I know I can subclass from almost anything by doing
I have a c开发者_C百科lass called Level, which is a subclass of NSObject. Then I have a class called Level_1_1 which is a subclass of Level.
For example public interface X{ public void foo(X i); } public class Y implements X{//error: doesn\'t implement foo(X i)...
I want to be able to create a UIButton with an oversized responsive area.I know that开发者_开发问答 one way to do that is to override the hitTest method in a subclass, but how do I instantiate my cust
I have a table called Users (class User < ActiveRecord::Base) and a subclass/STI of it for Clients (class Client < User).
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