subclassing

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Why there are no OutOfMemoryError subclasses?

As we all know, there are multiple reasons of OutOfMEmoryError (see first answer). Why there is only one exception covering all these cases instead of multiple fine-grained ones inh开发者_如何学JAVAer[详细]

2023-03-10 07:07 分类：问答
Is subclassing a User model really bad to do in Rails?

I am getting lots of push back from Rails because I have subclassed User into many different subclasses. In my application, not all users are equal. There\'s actually a lot of model objects and not ev[详细]

2023-03-08 12:51 分类：问答
Must child classes implement protocols to which their parents conform?

I have a class, MyClass, which implements the NSCopying protocol, a开发者_如何学JAVAnd I have a class, MyClassChild, which inherits from MyClass. MyClassChild does not implement the NSCopying protocol[详细]

2023-03-03 19:19 分类：问答
Adding subclassed password recovery control to page causes "An entry with the same key already exists." error

I am trying to subclass the password recovery control in asp.net (4) so that I can override the behaviour of the OnVerifyingUser event but I\'m having trouble adding my subclassed password recovery co[详细]

2023-03-03 03:41 分类：问答
How to override a superclass' property with more specific types?

The Scenario I have a situation where a base class called AbstractRequest has a delegate property of type id <AbstractRequestDelegate> declared in the header file:[详细]

2023-03-02 19:53 分类：问答
Subclassing NSBox

How could I subclass a NSBox to change the width, height , font type and background co开发者_JAVA百科lor of the Box\'s title?. Most of those look like they can be set with simple calls to NSBox\'s acc[详细]

2023-03-02 07:34 分类：问答
Changing filename color in Windows Explorer list view.

I would like to customize Windows Explorer. One thing I want to do is changing file name\'s color in list view if the file has a special condition.[详细]

2023-03-01 17:43 分类：问答
Xcode: very strange error subclassing my own class

I have an iPhone app with a custom class, Detail, a subclass of UIViewController that I created. I need to make a subclass of Detail, and I want to to call it Acti开发者_如何学CvityDetail. So I wrote[详细]

2023-03-01 14:38 分类：问答
Subclassing QAbstractTableModel

I have subclassed a QAbstractTableModel to represent data from a QMap. This QMap has QLists of QSqlRecords and this map is modified by some other part of my code. I want to use this model with a QTabl[详细]

2023-02-26 10:07 分类：问答
Android, subclass Preference class

I am tryig to write an Android Honeycomb application and I am having trouble subclassing Preference: http://developer.android.com/reference/android/preference/Preference.htm开发者_Go百科l[详细]

2023-02-25 19:12 分类：问答