In OOP, is it better to use class attributes within class functions, or just pass parameters to them. class User{ private $user = array(); public function Get_Existing_User($user_id){ //SQL selects user info for existing user $this->user = mysqli_fetch_assoc(); } public function Set_User($user_data){ $this->user = ...
Racking my brains on this one. I have the code below: the first stages of a JavaScript game. All the objects are well-defined and I'm using jQuery for DOM interaction. The puzzle is created with the following JS code: var mypuzzle = new puzzle("{solution:'5+6+89',equations:[['5+3=8',23,23],['5+1=6',150,23],['5+3=6',230,23]]}"); Howev...
I have been building a new application using my current understanding of domain driven design. So far I have a bunch of classes representing entities in my domain and a repository to retrieve from/persist to the database. The problem I am running into is that in the UI I have a need to display a few lists where the items in the list do...
PHP/MySQLisolating database access in class - how to handle multiple row Selects Here’s a coding question. I isolated all DB access functions in a class <?php class DB { var $conn; function DBClass () { @$this-> conn = mysqli_connect (DB_SERVER, DB_USER, DB_PASS, DB_NAME); } function validateUse...
I've been playing around with Moose, getting a feel for it. I'd like an example of pure virtual functions like in C++ but in Moose parlance (specifically in a C++-looking way). I know that even with Moose imposing a stricter model than normal Perl, there's still more than one way to do what I'm asking (via method modifiers or SUPER:: cal...
Im trying to learn OOP, but the so called 'real world' examples in the books im reading arent helping me at all. I already know that some people think that learning oop for php is unnecessary, so i don't need more people telling me the same thing. All the examples like Pet, Car, Human arent helping me anymore. I need REAL LIFE examples t...
I have an application that takes some input and generates configuration files as output. Since the exact input or output format could change over time, I defined two interfaces: Importer and Exporter. Each concrete importer or exporter could have different parameters that need to be initialized to work. For example, if the import data i...
Is it a good or bad idea to make setters in java return "this"? public Employee setName(String name){ this.name = name; return this; } This pattern can be useful because then you can chain setters like this: list.add(new Employee().setName("Jack Sparrow").setId(1).setFoo("bacon!")); instead of this: Employee e = new Employee...
I have a class that executes the MSNP15 protocol. The protocol requires clients to perform frequent connection/disconnection to various servers like the dispatch server, login server and the switchboard server. I decided to store the protocol related variables ( like ticket tokens, nonce etc ) as static member variables in a utility cl...
I tried to use object expression to extend the IDelegateEvent, but in fsi there was an error FS0039: The value or constructor 'handler' is not defined. My codes are as follows: type IDelegateEvent<'Del when 'Del:> Delegate> with member this.Subscribe hanlder = do this.AddHandler(handler) { new IDisposable with membe...
So currently I am using a pattern to grab a data entry (record). It works great for me if I only need to work with one record. However if more than one record is involved it gets more complicated. Here is my base pattern, using a contacts table: class Contacts_Entry { private $_entry = Array('contact_id' => false, ...
Is there some rule of thumb for that decision? I always stuck with this question. Even if I know that currently I don't need the result of overriden method, how can I be sure that in the future the overriden method won't be modified? For example, there is a possibility that author of the parent class that I'm extending will decide to imp...
Hi All, I was giving a test and got one question. QUESTION: What do you use if you want to ensure that all methods and properties are implemented? a)Inheritance. b)Polymorphism. c)Encapsulation d)Interface. I think its Interface. Am I right or the. ans is diff? ...
I'm trying to wrap my head around Object Oriented programming. But I'm having some trouble. I (think) I understand the general concepts and the arguments for why OOP is a 'good' design. My problem comes when I sit down and try to write code that is OOP. I tend to end up with programs that are either very procedural but have the occas...
So I'm working on a project for a realtor. I have the following objects/MySQL tables in my design: Complexes Units Amenities Pictures Links Documents Events Agents These are the relationships between the above objects. Complexes have a single Agent. Complexes have multiple Units, Amenities, Pictures, Links, Documents, and Events. Un...
I find myself rarely using object oriented principles when I design applications. I am looking for a good reference for Object Oriented design. I'm using C# as my programming language and would like to have a reference which helps to make use of the OO contructs provided by C#. But basically I need a good book to derive some inspiration....
Hi guys, at my working place (php only) we have a base class for database abstraction. When you want to add a new database table to the base layer, you have to create a subclass of this base class and override some methods to define individual behaviour for using this table. The normal behaviour should stay the same. Now I have seen ma...
I have base class BaseClass and derived classes DerivedA, DerivedB, and DerivedC that all inherit BaseClass. I have another class, ExternalClass with a method that accepts a parameter of type BaseClass, but is actually passed a derived class. What is the best way to differentiate between these classes in ExternalClass if I wanted to per...
Hello, I am debating the proper, OO-design to use another object's functionality (methods) from a java class, while both objects remain decoupled as much as possible. For example, at some point in my class, to implement my logic, I need to call a method that belongs to another object, say a helper class. This helper class does not need...
Hi, is there any easy way to convert Procedural PHP to OOP PHP. I've a web application, and currently, only the login system is in OOP. Thanks :) ...