I am using php 5.3, and yes, there is a bug open for that, but some think this is not a bug, and this makes me wonder. abstract class A{ private function bobo(array $in){ //do something } } class B extends A{ private function bobo($shmoo,$shmaa){ //do something } } This throws an error. Shouldn't inheritance ...
Is it possible to subclass and inherit from javascript Arrays? I'd like to have my own custom Array object that has all the features of an Array, but contains additional properties. I'd use myobj instanceof CustomArray to perform specific operations if the instance is my CustomArray. After attempting to subclass and running into some ...
A difference between a destructor (of course also the constructor) and other member functions is that, if a regular member function has a body at the derived class, only the version at Derived class gets executed. Whereas in case of destructors, both derived as well as base class versions get executed? It will be great to know what exac...
hi i try to create a plpgsql trigger for postgresql 8.3 which automatically partitions a table on before insert by the id column if the destination table doesnt exist it will be created, and the insert goes there so i created the insert statement with the new table name like this exec_insert := 'INSERT INTO '||TG_TABLE_SCHEMA||'.'||T...
Hi. I have two classes, one of which is a subclass of another, and differs only by the fact that it contains an additional member variable to its parent. I am not using the default constructor, passing in a reference to a single object as the constructors parameter. What I would like is for the constructor of the parent to examine this ...
Hello all, I need to outline a little bit of background info for context. Please bear with me and I'll try to simplify my question as much as possible: I have one object that inherits from another object. We'll call the first object Fruit and the second Apple. So I've declared Apple as follows: public class Apple : Fruit { public ...
Hi. If, for example, I have the following requirements: 1. Dog is an Animal 2. Zoo has Animal(s) Do I still need the 2nd diamond connector (the lower one) as shown in the image below: https://docs.google.com/drawings/edit?id=1TlnDD8LrqPo-J9_gfHdGm6Y9BpeqC8N-c6Cnc9bPwko&hl=en&authkey=CNLq5bYB Thanks. ...
I'm having an issue with a rather intricate interaction of C++ and Python that I'm hoping the community can help me with. If my explanation doesn't make sense, let me know in the comments and I'll try to clarify. Our C++ code base contains a parent classes called "IODevice" which is a parent to other classes such as "File" and "Socket"...
I'm in the planning stage of a relatively large (10k+ lines) project with several classes (30+) and several levels of class inheritance (5+). What is the best (or most conventional) way to lay out my project in terms of file and folder structure? Should I have one file per class? Should I have one folder per inheritance branch? Should...
There is some black magic code in c# where you can define the default implementation of an interface. So you can write var instance = new ISomeInterface(); Any pointers? UPDATE 1: Note that is did not ask if this is a good idea. Just how was it possible to do it. UPDATE 2: to anyone seeing the accepted answer. "this should be tre...
Let's say I have an object of the class Car, with like 30 variables ranging from top speed to color. I want to make a MyCar object (class MyCar extends Car) that is basically the same thing except it stores some more information. It is not possible for me to create MyCar objects right away (since out of thousands of Car objects only a f...
Strange problem occurred when I tried to "solve" usual diamond problem in a usual way - using virtual inheritance: A / \* both virtual B C \ / D However my base class A doesn't have default constructor, so I was to call it manually from D. However when I try to add a class E into this diamond as C-inherited A / \* both vir...
Possible Duplicates: GCC problem : using a member of a base class that depends on a template argument Why does GCC need extra declarations in templates when VS does not? Why doesnt a derived template class have access to a base template class iphone compiler inherited templated base classes with passed through type not being e...
I'm trying to create a PHP file that calls a function in another file. Some sample code: Interface code: interface AJAXDispatcher { static function dispatch($action); } Implementation: class myAJAX implements AJAXDispatcher { static function dispatch($action) { if ($action === "action1") { do_something(); } This s...
hi, I'm working on a Actionscript 3.0 to Javascript-converter. I tried to find a way to circumvent the problem with the order of definitions, because it doesn't matter in AS, which package is defined first. To my surprise the following code works, although the prototype of A is defined after BA inherits from A: javascript (example outp...
I have a superclass and a subclass mapped to have a table for each class like this @Entity @Table(name="superclass_table") @Inheritance(strategy=InheritanceType.JOINED ) public class SuperClass { } @Entity @Table(name="subclass_table") public class SubClass extends SuperClass { } When I make session.createCriteria(SuperClass.cl...
function SuperClass() { var self = this; self.someVariable = true; } function SubClass() { var self = this; self.name = "Sub"; } SubClass.prototype = SuperClass; var sub = new SubClass(); alert("This is a sub class with name " + sub.name + " and variable " + sub.someVariable); </script> </head> <body> </bod...
am trying to understand pattern used in ublas. pattern is such: struct vector : vector_expression<vector> where vector_expression is like this: template<class E> class vector_expression { ... // no constructor or E pointer/reference in class // const E &operator () () const { return *static_cast<const E*>(this); } complete so...
I have a class that represents a basic page with "go back", "go forward", and "canel" buttons in Wicket. But not all pages have all the buttons, e. g. the first page doesn't have "go back" obviously. My idea is to define a generic ActionHandler public interface ActionHandler { void perform(); } and let subclasses return the actions...
Can anyone suggest any real life example of Hybrid inheritance? ...