I have a .NET_4 Managed C++ ref class that I derive from a .NET_4 base class written in C#. EXAMPLE:: { C# BASE CLASS:: namespace Core { public class ResourceManager { public class _Resource { public virtual void Delete() {} } } } } MANAGED C++ CLASS namspace Input.DI { public ref class Mouse : ResourceManager...
from p.46 "Effective Java" Joshua Bloch. Item 9: ALways override hashCode when you override equals Some class PhoneNumber overrides equals() and doesn't override hashCode() "two instances are involved: one is used for insertion into the HashMap, and a second, equal, instance is used for (attempted) retrieval." ... "... Even if the two ...
My question is that if it is possible to overload constructors in scala? So I can write code like: var = new Foo(1) var = new Foo("bar") And if it is not possible, are there any equivalent tricks? ...
** New EDIT ** so what I'm trying to do is this. I want the to add new form elements generated by my module on the product view of the following url http://magento.example.com/catalog/product/view/id/46 ultimately these elements will be determined to show up by a related table in my module I expected that if I extended Mage_Catalog...
I'd like to change the behavior of Python's list displays so that instead of producing a list, they produce a subclass of list that I've written. (Note: I don't think this is a good idea; I'm doing it for fun, not actual use.) Here's what I've done: old_list = list class CallableList(old_list): def __init__(self, *args): ...
I've recently learned like 3 new languages and I'm starting to get them confused. I haven't worked Java in doing anything particularly complex (outside of android) in a couple years. I'm having trouble remembering if this is possible: I'm subclassing ArrayList mainly so I can keep the arraylist ordered. I'm trying to override the add(ob...
Hi, I have a question regarding Magento's local directory. I am trying to override a core controller - Mage/Contacts/controllers/IndexController.php. So I copied IndexController.php to /app/local/Mage/Contacts/controllers/ but Magento is still using core file. I can confirm it because I see 404 page when I rename Mage/Contacts/contro...
i've create a project/class file in Eclipse Helios using JDK1.6. I had let the eclipse to generate the code for the implementation class of an Interface. public interface Foo { void bar(); } public class FooImpl implements Foo { @Override public void bar() { } } So for so good. Now for some reason, I've imported the p...
Consider the following overriden OnPaint method for a .NET Control: protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); e.Graphics.RotateTransform(180); // lots of drawing code } Is it a problem that I do not restore the state of the e.Graphics object when I am finished? In Java this is often done by making...
I am trying to add my own error handling to the JavaScript setTimeout function. The following code works fine in chrome: var oldSetTimeout = window.setTimeout; window.setTimeout = function setTimeout(func, delay) { var args = Array.prototype.slice.call(arguments, 0); args[0] = function timeoutFunction() { var timeoutArg...
Because of my device I can't use virtual functions. Suppose I have: class Base { void doSomething() { } }; class Derived : public Base { void doSomething() { } }; // in any place { Base *obj = new Derived; obj->doSomething(); } the obj->doSomething() will call just the Base::doSomething() Is there a way with Base *o...
I have a weird issue with DataGrid in WPFToolkit (.NET 3.5) and the built in version in .NET 4.0: When creating a keyed DataGrid-style with an explicit setter for CellStyle to another keyed style it works as suspected. But when also creating an keyless style for DataGridCell it will override the explicit CellStyle-setter in the DataGrid...
I have a class formed by two partial classes. One created by ORM code generation and one for extensions. In this particular instance, I need to override one of the properties generated by the partial class because I need to do some validation on it first. Is it possible to use my extension class to kind of override the property of the...
I have the following test code: public interface Container<I> { public void addClass(Class<?> clazz); } public class MyContainer implements Container { public void addClass(Class<?> clazz) {} } and I get the following error when trying to compile these two class: MyContainer.java:1: MyContainer is not abstract and does no...
Hi, I want a certain functionality when Enter key is pressed on a Button. When I override onKey(), I write the code to be executed for KEY_ENTER. This works fine. setupButton.setOnKeyListener(new OnKeyListener() { public boolean onKey(View v, int keyCode, KeyEvent event) { if (KeyEvent.KEYCODE_ENTER == keyC...
Should I put the @Override tag if I am implementing a method of an interface? I know @Override tag should be there when you override a method of super class (not an interface). But how about implementing a method of an interface? ...
I would like to override a method in an object that's handed to me by a factory that I have little control over. My specific problem is that I want to override the getInputStream and getOutputStream of a Socket object to perform wire logging; however the generic problem is as follows: public class Foo { public Bar doBar() { ...
After having read Ian Boyd's constructor series questions (1, 2, 3, 4), I realize I don't quite grasp the literal meaning on what's being hidden. I know (correct me if I'm wrong) override's sole purpose is to be able to have polymorphic behavior, so that run-time can resolve a method depending on the actual type of an instance - as oppo...
Hello all! To the point, I want to override the standard js confirm() function within a jQuery plugin. I have figured out how to do it with the simple function layout below. function confirm(opts) { //code } Now, what I want to do is call another function within the confirm function above, like so... function confirm(opts) { op...
Here's the simplest form of my question: IApple requires, among other things, property Flavor IToffeeApple also requires property Flavor The problem is, I want IToffeeApple to implement IApple (public interface IToffeeApple : IApple), but they both have the same property requirement. This becomes a problem when, for 1 purpose I need a...