Hi. I am building a javascript widget and i plan to use JQuery so i need to load it dynamicly and set it to no conflict mode. I am using a Object Oriented approach in my js following the example of GetSatatisfaction.com widget (http://s3.amazonaws.com/getsatisfaction.com/javascripts/feedback-v2.js) I have also found this tutorial about ...
I used the instructions in this post: http://stackoverflow.com/questions/475569/get-all-instances-of-a-class-in-php to keep all instances of a class in an array. But when I change an object inside of the array, it doesn't change the "original". class Pane { protected $data; public $name; public static $instances = array(); pu...
I'd like to do this: <?php define('X', 'attribute_name'); // object $thing is created with member attribute_name echo $thing->X; ?> Attempting $thing->X, PHP takes X to be a property of $thing, and ignores the fact (rightly so) that it's a define()'d token. That in mind, I had expected $thing->{X} to work, but no dice. The only solu...
Here's a design problem that I run into sometimes. Say I have a set of related classes, with some common features and some unique ones; interface TableCell { public function setContent($content); } interface HTMLTableCell extends TableCell { public function setID($id); public function setClass($class); } interface CSVTableCe...
I've got a php class that I create several instances for. I'd like to get a count of how many times I've created that object. <?php class myObject { //do stuff } $object1 = new myObject; $object2 = new myObject; $object3 = new myObject; ?> Is there a way to find that I've created 3 myObjects? ...
I have a project that has mainly two objects, both inheriting from a base. Like this: Public Class Vehicle Property Model As String Property Make As String End Class Public Class Truck Inherits Vehicle Property IsFlatbed As Boolean End Class Public Class Car Inherits Vehicle Property LeatherSeats As Boolean End...
Extending an interface simply adds additional operations to be defined in any implementors and cannot break any existing implementations (unlike extending a class). But it can change (EDIT 3 WHICH CONSTANTS) and hence the PERCIEVED value of constants (EDIT 2 AS SEEN BY THE IMPLEMENTATION CLASSES). For instance, the following: interfac...
I am learning about creating objects in JavaScript. When I do this ... var Person = { name: "John Doe", sayHi: function() { alert("Hi"); } }; I know that I am creating an instance of a Person class, but I do not know how (or if) I can reuse that class to create another instance. What OOP features does JavaScript has? Does...
I am still kinda new to developing games in XNA and using classes with C#, but I want to start a semi-decent game project where I can learn without throwaway projects. I want to devide my game up into classes. For example a main game class, a player class (i want two players, and they battle against each other), a level class (for drawi...
I have been reading around the definition of OOP and couldn´t get why PHP is considered object oriented. Can this have anything to do that the "basic level" of PHP isn´t and more advanced features are? Thanks in advance! ...
Let's say I want to create an Object called 'Vertex'. Usually, in Java I would do this by: public class Vertex { // member variables public data; private id; // member methods public Vertex() { /* default constructor */ } public getID() { return id; } } Now, how would I do that in JavaScript? I want to preserve pri...
I have two classes in separate folders class Parent { public $path = null; function __construct() { $this->path = __DIR__; } } and class Child extends Parent { } So when I create an instance of Child: $child = new Child(); echo $child->path I get a path to Parent. What I actually want is to get path to...
Just a quick one. In OOP PHP, if I have a function defined in the parent class, and a modified version in the child class, and I call it from an instantiated object of the child class, will it use the child class's version of the function? I am pretty sure it will just double checking, as there is no way for me to check within the runni...
I am using the XNA framework to make one of my first games. In it's main game class (Breakout.cs), I put this: public int screenHeight; public int screenWidth; And in the Initialize method: this.screenHeight = GraphicsAdapter.DefaultAdapter.CurrentDisplayMode.Height; this.screenWidth = GraphicsAdapter.DefaultAdapter.CurrentDisplayMod...
Context From The Pragmatic Programmer: Every piece of knowledge must have a single, unambiguous, authoritative representation within a system. Questions How is that statement reconciled with directly setting a private member variable's value throughout a class in multiple places? Does it matter as there can be no external de...
Hi there! Could someone explain to me why objectInfo method on the third button returns undefined for the first value? http://jsfiddle.net/PnSSX/11/ I can't figure out where this comes from, because there is no property before name... Can you help? Am I missing something? Best regards, shapeshifta ...
I have an array and want to apply MySQLi->real_escape_string on every member of the array through array_walk but this is not working: array_walk($array, '$mysqli->real_escape_string'); It gives this error: Warning: array_walk() expects parameter 2 to be a valid callback, function '$mysqli->real_escape_string' not found or invalid ...
I'm new to "Object Oriented" PHP, but have managed to figure most things out so far. I'm building a website where users can register an account and then add, let's say, hobbies onto their profile. I've managed to figure out creating the class, object, storing a single user in the database, and retrieving a single user from the database ...
Say you have a class Population and Population makes an internal List of Individuals. The user wants to pass an unconstructed Individual subclass to Population and let Population do the work of constructing these, whatever subclass was passed. public class Population{ private List<Individual> indiList = new ArrayList(25); /...
Hello, Any real world simple samples of using abstract class? I'm trying to get in PHP's OOP, but I still can't understand - why abstract class should be used and when (Yes, I know that it's impossible to create abstract class instance, only instance of class inheriting it). Thank you ...