I am writing a motor vehicle system for a county government that lets a user select many different types of car tags. The problem is that the state has built in a lot of special little exceptions for tag types. I realize it's very messy and inefficient to simply code if statements for each of these, but I can't seem to find a way to ab...
Hi all, After several years of following the bad practice handed down from 'architects' at my place of work and thinking that there must be a better way, I've recently been reading up around TDD and DDD and I think the principles and practices would be a great fit for the complexity of the software we write. However, many of the TDD sa...
What methods, practices and conventions do you know of to modularize C code as a project grows in size? ...
I am wondering which one of these would be considered the cleanest or best to use and why. One of them exposes the a list of passengers, which let the user add and remove etc. The other hides the list and only let the user enumerate them and add using a special method. Example 1 class Bus { public IEnumerable<Person> Passengers { ...
Tried to run Run Code Analysis on a project here, and got a number of warnings that said something like this: CA1002 : Microsoft.Design : Change 'List<SomeType>' in 'SomeClass.SomeProtectedOrPublicProperty' to use Collection, ReadOnlyCollection or KeyedCollection Why should I use Collection<T> instead of List<T>? When I look at the...
So, I have this public API that my application exposes, allowing customers to write plug-ins. For the sake of this example, let's say it's a fairly simple key-value pair system, something like: public interface Key { // marker interface, guaranteed unique in some scope } public interface KVPService { Set<Key> getKeys(); Object ge...
I'm guessing most of us have to deal with this at some point so I thought I'd ask the question. When you have a lot of collections in your BLL and you find that you're writing the same old inline (anonymous) predicates over and over then there's clearly a case for encapsulation there but what's the best way to achieve that? The project...
Is it possible to have libpcap remove a packet instead of just sniff it as it passes through? I'm wanting to intercept each packet and encapsulate it into a new packet along with measurement data, but both packets (mine and the original) both reach the destination. Many thanks ...
I have to process about 20 POST-parameters, and I am not sure where to do that. I could define each as an argument of the method on the model, and pass them from the controller when the method is called. This would result in quite a bit of work and make the function call less readable, due to the number of arguments. Or I could call th...
Hi all I'm wondering if it's possible to encapsulate the methods of a class, but then expose them within a consuming class. For example (JFTR, I know this code is wrong) class Consumer{ public function __construct($obj){ $this->obj = $obj; } public function doCommand(){ $this->obj->co...
Many people know this article: more on getters and setters. I think it does a convincing job of portraying the evil side of getters/setters. I've also tested it by trying to convert an existing project (unfinished) to code without getters/setters. It worked. Code readability improved greatly, less code and I've even managed to get rid of...
The Wikipedia article about encapsulation states: "Encapsulation also protects the integrity of the component, by preventing users from setting the internal data of the component into an invalid or inconsistent state" I started a discussion about encapsulation on a forum, in which I asked whether you should always clone objects inside...
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...
In response to What is your longest-held programming assumption that turned out to be incorrect? question, one of the wrong assumptions was: That private member variables were private to the instance and not the class. (Link) I couldn't catch what he's talking about, can anyone explain what is the wrong/right about that with a...
First let me state that, despite being a fairly new practitioner of TDD, I'm pretty much sold on its benefits. I feel like I've progressed enough to consider using mocks and have hit a real brick wall when it comes to understanding where mocks fit in with OOP. I've read as many relevant posts/articles on the subject as I could find (Fo...
Hello, The following enum structure performs certain operations while remaining agnostic to the client class (for encapsulation reasons) public enum MyEnum implements Commands{ A{ public int method1(int varY) { return varY+2; } public MyEnum method2(){ return MyEnum.B; ...
I have a generic question about scope and encapsulation. Take two scenarios: Scenario 1: // a global application level constant public static const IS_DEMO_MODE:Boolean = false; ... // somewhere deep in the codebase private function _myFunction():void { if (IS_DEMO_MODE == true) { // If Demo Mode do not allow this functi...
Is it possible to encapsulate python modules 'mechanize' and 'BeautifulSoup' into a single .py file? My problem is the following: I have a python script that requires mechanize and BeautifulSoup. I am calling it from a php page. The webhost server supports python, but doesn't have the modules installed. That's why I would like to do thi...
I've browsed through the questions on the site, but haven't found a decent answer yet. My problem is that my main form class is cluttered due to all the events and methods. I decided to break the form into user controls. Unfortunately I am having trouble accessing information from other User controls. For example I have a user control...
I have a project in which we often use Integer.parseInt() to convert a String to an int. When something goes wrong (for example, the String is not a number but the letter 'a', or whatever) this method will throw an exception. However, if I have to put exceptions in my code everywhere, this starts to look very ugly very quickly. I would l...