I have a project with an FAQ app. The app has models for FAQ (written by the site authors) and UserFAQ (written by users-- not just a clever name). I want to return all entries, FAQ or UserFAQ that match certain conditions, but I also want to exclude any UserFAQs that don't match a certain criteria. Ideally, it would looks something like...
I'm trying to subclass the built-in file class in Python to add some extra features to stdin and stdout. Here's the code I have so far: class TeeWithTimestamp(file): """ Class used to tee the output of a stream (such as stdout or stderr) into another stream, and to add a timestamp to each message printed. """ def _...
Hi, I have a class 'A' and a class 'B' that inherits class 'A' and extends it with some more fields. Having an object 'a' of type 'A', how can I create an object 'b' of type 'B' that contains all data that object 'a' contained? I have tried a.MemberwiseClone() but that only gives me another type 'A' object. And I cannot cast 'A' into '...
I'm using Bear to inspect user objects and the WindowProc count is never decreasing upon RemoveWindowSubclass. So does the total in USER which is the User Objects in Task Manager. I read Raymond's Safer subclassing comment on removing subclassing before destroying the window but my test is done w/o destroying it at all. The same subcla...
I want to create sub-class B that inherits from super-class A. my code here: function A(){ this.x = 1; } B.prototype = new A; function B(){ A.call(this); this.y = 2; } b = new B; Console.log(b.x + " " + b.y ); when run it,it show B is undefined. ...
I'm looking for a method that I can override in my sub classed Form where all the controls inside the Form are already created and visible at design time? I've tried OnHandleCreated() and it works as I expected at run time because I need to loop through all controls in a specific Form and do something to do them. However, I would like t...
I'm trying to implement a color picker in my Cocoa app. (Yes, I know about NSColorPanel. I don't like it very much. The point of rolling my own is that I think I can do better.) Here's a picture of the current state of my picker. The wells surrounding the color wheel are NSColorWell subclasses. They are instantiated programmatically ...
One of my [DataContract] classes contains a [DataMember] which is a List. BaseClass has a few different sub-classes. Whenever that List contains instances of any sub-class, an exception occurs during/after the Service is returning to the request channel. If the List does not contain any sub-classes, it works fine. Here is an example of...
I was wondering if there are any implementations of java.awt.Image out there other than the ones provided by the Java standard edition. Any third party classes maybe that provide any useful features overlooked by Sun? ...
I started to build a POS system in Doctrine. I am getting an order, but I have no clue whether or not I even set up subclasses in the proper way for Doctrine. Here is the model I came up with for line items on an order lineItem: line_total, order_id, type rentLineItem: returned_date_time, item_id, sold buyLineItem: item_id The databa...
I subclassed an edit box control like lpfnOldWndProc = (FARPROC)SetWindowLong(hEdit,GWL_WNDPROC, (DWORD)SubClassFunc); LRESULT FAR PASCAL SubClassFunc( HWND hWnd, UINT Message, WPARAM wParam, LPARAM lParam) { switch(Message) { case WM_CHAR: //Process this message to avoid messag...
I've defined this subclass of CLLocation MyLocation.h @interface MyLocation: CLLocation { NSString *datum; NSString *ellipsoid; } @property(nonatomic,retain) NSString *ellipsoid; @property(nonatomic,retain) NSString *datum; MyLocation.m @synthesize datum,ellipsoid; Now i get a CLLocation instance through the location mana...
Let's say I want to use a different template for the add page but not the edit. What would be the best way to accomplish that? I was thinking either subclassing add_view or change_view, or alternatively maybe subclass some InlineModelAdmin method. What's your guys take on this? Thanks. ...
I'm currently working on a legacy system using Oracle's ADF Faces JSF implementation for the presentation layer. The system relies on a rules engine to make certain form elements required, disabled, or even highlighted depending on the user's interaction with them or values entered. At it's current stage the application is "working", s...
I am trying to subclass the window that currently has focus. I do this by monitoring for HCBT_ACTIVATE events using a CBT hook, and set and unset the WndProc of the focused and previously focused windows. The problem is that it only works whenever I have a breakpoint set somewhere in the code. If there is no breakpoint, once my applic...
If one can prevent subclassing by declaring private constructor in the base class, why do we need "sealed" keyword? Is it so because CLI can optimize it better? maybe. Thanks. ...
I have 2 entities products and images. Not all images are product images, and images are a sub class of a file below are my entities. I need to find all of the images that are not associated to a product. I'm new to retrieval of entities and have tried numerous approaches. Any ideas or links would be greatly appreciated. public clas...
I want something similar to protected, where only a class which implements the "protected" field and anything that subclasses it can access it. So, I want to be able to declare a variable in the base class as "private," but still be able to access it from a subclass. Perhaps this is against he very nature of the subclass, private, and/o...
I've created a subclass of NSBox to implement drag and drop. I have the following code: @interface DropView : NSBox { } - (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender; - (BOOL)performDragOperation:(id <NSDraggingInfo>)sender; @end @implementation DropView - (void)awakeFromNib { [self registerForDraggedTypes: [NSA...
In Java, is it possible to override member data in a subclass and have that overridden version be the data used in a super class's implementation? In other words, here's what I am trying to get to happen, and it's not happening: abstract public class BasicStuff { protected String[] stuff = { "Pizza", "Shoes" }; public ...