One of the four pillars of object-oriented programming (OOP), inheritance establishes a "is-a" relationship between objects. For example, a "Cat" object can be treated in code as any other "Animal" object because a "Cat" is-a "Animal".
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Should I create an abstract runnable? I've 4 sub-classes which perform similar work but only 3 of them have identical constructors
I've added the code for an abstract thread class and 2 sub-classes. The structure and job of the threads (sub-classes) is identical except one difference: ONE of ...
5
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2answers
58 views
Using a CRTP approach for loading OpenGL programs
I wanted to try using CRTP (also new for me) to try making the loading of shared resources implicit. (Specifically I'm using it for loading OpenGl shader programs)
This will also help separate some ...
3
votes
1answer
50 views
Implementing binary output to a file in C++11
I would like to have a class which supports outputting bits into a file. This is what I came up with but I fear there are many poor decisions. Should I inherit from a ...
4
votes
2answers
59 views
Too little in common to use superclass?
Is there something as "they have too little in common to use a superclass"?
In my case, doing iOS programming, in a project, every screen has the same background. So I created a superclass which only ...
4
votes
2answers
77 views
Inserting and displaying books
I'm trying to write a program where you can insert and display some books (without using a database).
For doing this, I use three classes:
Book - is the base ...
8
votes
1answer
182 views
Solar System model: Moving Space Balls
I have a model of the solar system that I'm working on at the moment. Now is the time to start cleaning my code up a little.
Here's what I have so far:
A main 'driver' method:
...
0
votes
0answers
18 views
JavaScript prototype inheritance [migrated]
I've been spending my past couple hours researching prototypical inheritance, but I'm left with conflicting/unclear answers on how it should be done. It seems to be working for how I'm using it right ...
1
vote
2answers
179 views
Overriding base class methods
I would like to know if there is anything wrong I am doing here. I am learning about inheritance.
...
2
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2answers
94 views
Custom TextBox control: AppendLine
Is there any way to improve this simple addition to the textbox control: appending a new line?
...
5
votes
1answer
54 views
Object.extends in JS
I built an easy inheritance implementation for JavScript that works similar to other OO languages and wanted some feedback on it. This works perfectly how I'd like it to, but I've read a lot of ...
6
votes
2answers
321 views
Simple PHP inheritance using an abstract class
I have created simple class inheritance of an abstract class Pet which is basically the skeleton of all other children classes.
...
6
votes
3answers
432 views
DRYing out some Java code and tests
I am writing some tests that all follow the same pattern, I feel like repeating myself over and over again, how can I reduce the repetition? The (almost) repeating part is in constructor and the class ...
6
votes
2answers
177 views
Layer Stack class to practice std::shared_ptr
The following three source files is to define and test a class StackLayer.
While it was written in a need for scalable layer-based architecture design, it was also ...
1
vote
1answer
66 views
Duplicate code in similar classes where I cannot add more inheritance
I'm building a .NET Linq-esc query builder for my application and I'm wondering about my implementation and code structure when it comes a few classes.
Basically I'm creating a query builder for SQL, ...
3
votes
3answers
76 views
Working with Classes (inheriting), @ properties and Initialization
I'm working on this Objective C programming assignment I found online. I'm not sure if I have met all the requirements, especially part C. Any help or suggestion will be appreciated.
Part 6
...
14
votes
4answers
2k views
Reusability vs simplicity in a small game with a set of interfaces
I have a small game I'm working on with a set of interfaces:
IHavePosition:
...
2
votes
2answers
67 views
Generate the Norwegian equivalent to social security numbers - follow-up
First of, here is my previous post.
That should explain a fair bit. The reason I'm posting one more time, is I have changed a lot. Using more classes, let them do all the work, and the overall ...
1
vote
1answer
108 views
Simple JavaScript inheritance
I'd like to know what you think about my implementation of inheritance. It's pretty small and intuitive I think, but I don't know if there are any drawbacks.
I really want to keep it as simple as ...
12
votes
2answers
223 views
Encapsulated text-based RPG using a randomized combat system
For my rags-to-riches submission, I've decided to improve this code:
Text-based RPG game using classes
However, I've decided to start off with something different. The original code is more ...
2
votes
1answer
125 views
Many interfaces and lots of inheritance vs few interfaces and less inheritance? [closed]
I have a Visual Studio Solution which has a bunch of Projects in it. One of these projects is called "Services" and is basically the junction point between all remaining projects. When I built it ...
2
votes
0answers
40 views
Namespace handling on nodejs and inheritance managing
It should solve the following issues:
Handle namespaces;
Be a class factory from Pojos
Be a object factory
Create a class with inheritance capabilities from a POJO using john resig inheritance ...
5
votes
2answers
92 views
When should I actually derive from my interface?
Context:
I am working on an XNA project, and since procedural generation is likely to be used, I wanted to eventually create a helper class to work with data to facilitate that.
Design Goal:
...
2
votes
1answer
63 views
Using a decorator to apply an inherited method to all child objects of the inherited type
I wanted to share this and get some feedback. My goal was to be able to have an object with methods:
...
5
votes
3answers
66 views
Cons of declaring derived class type member in another derived class (both of which share the same base class)
I'd like some input on the way I've structured some things in a side-project I'm working on.
I declare an abstract class, CelestialObj, which will contain the ...
4
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0answers
128 views
Static Multilevel Inheritance with CRTP (Fast Intrusive Pointers)
I wanted to have a way to be able to static_cast to the proper derived type pointer of a base class to simulate a virtual call. Here the virtual call is for a ...
2
votes
1answer
50 views
JavaScript mixins, extending and super methods
I've read a lot of stuff about mixins, inheritance and such, and in the end I came up with this solution for extending a class with multiple mixins. I haven't seen this anywhere else...
Is this a ...
2
votes
0answers
81 views
Implement.js JavaScript module pattern
I have been playing with a new JavaScript module pattern to see what I can come up with. I think it's quite powerful and wanted to know if it is something people would find useful?
I'm looking for ...
2
votes
3answers
88 views
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1answer
102 views
Merging with different modules
We have an action merge for two projects. In the projects we have different modules like Feed, Files, Post etc....
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3
votes
2answers
99 views
Is my code overdesigned? Does it rely too heavily on interfaces?
Context:
I am using XNA to create a simple game / learning project.
Problem:
I have three interfaces, each with a different purpose in mind. However, the way I use them, as well as their ...
3
votes
1answer
12 views
Better solution than inheritance with “busy” __init__
The goal was to create a node object with input and output ports for a data flow system. I approached the problem using inheritance as I couldn't think in an easy way to do it with composition.
My ...
6
votes
4answers
2k views
Basic Postfix Calculator in Java
I recently posted some sample code that I was providing students with and got great feedback so figured I post another one of the examples I will be providing students with. (See Simple Example of an ...
6
votes
5answers
189 views
Initializing JTree
I have a class called Piece, and many many subclasses of Piece. I want to add an instance of every single subclass of ...
5
votes
1answer
61 views
Having children call parent's public events with data generated from a protected event
I don't know that my title describes the code I want reviewed. Hopefully the code is explanatory.
I have an abstract parent class with two children. The parent listens to some hardware notifications ...
1
vote
2answers
69 views
How to write factory classes or functions in JavaScript? [closed]
I find that in Javascript there are many methods of creating an object so what would be the appropriate approach for constructing an object and why.
...
2
votes
1answer
74 views
Can this architecture of base + derived classes be coded more efficient? [closed]
I've got some architecture in my code similar to this. It is about the Construct method in the base class in the example below. This method contains the logic for constructing a building, which is the ...
1
vote
1answer
37 views
Simple inheritance with functions in subclasses [closed]
It seems like there are many ways implementing inheritance in JavaScript. Which version do you prefer or would you suggest another solution?
The code should run in IE8+ so my first version would not ...
2
votes
0answers
43 views
Forcing base class functions to be used from the base class [closed]
The answer to this question is probably "W-what!? What the !@#$-- Stop!! That's a terrible idea!", but I would like to hear your thoughts...
I have two classes and one inherits from the other.
...
3
votes
3answers
143 views
Raising error if method not overridden by sub-class
Background
I have a base (only 2 classes inherit from it, and only from it) abstract (meaning I don't want it to be used directly) class that implements some common functionality.
Some of it depends ...
12
votes
1answer
147 views
DataLayer Interfaces Genericized
I have some concerns on my refactoring for the data layer in my current Project. Just for a small info, I am currently building a CRM as "training JEE application". But enough of talk, let's talk ...
6
votes
2answers
386 views
Class for printing class hierarchy as text
I'm coding a little class hierarchy printing tool for easy show hierarchies of java classes.
This is my current code:
...
5
votes
1answer
304 views
Prototype inheritance with Knockout observables
I'm trying to write a JavaScript library to allow inheritance with knockout.
The fundamental problem when implementing inheritance in Knockout is that each Knockout observable is its own instance, ...
2
votes
3answers
88 views
Color vision checkup
I have this old project I wrote years ago and it's all classes and methods all over the place. I am trying to learn/understand how I can apply a more OOP principle. It is very large and can't paste ...
3
votes
2answers
107 views
Using properties efficiently in inheritance
I have a class called Mailer which has some properties like this
...
4
votes
1answer
48 views
dnaof() - inheritance made easy, my own make inheritance tool
https://github.com/exebook/dnaof
I created this simple inheritance tool for JavaScript, could any one with deep knowledge in JavaScript prototyped inheritance review it?
Here is the library itself:
...
15
votes
4answers
922 views
Modelling a Call Center
This is the requirement I have (from the book: Cracking the Coding Interview)
Imagine you have a call center with three levels of employees: fresher, technical lead (TL), and product manager (PM). ...
7
votes
6answers
769 views
Fluent interface and polymorphism
EDIT: For further improvements see the related question: Variadic templates and pointers to member functions to achieve a named-parameters interface in C++
I would like to improve the interfaces of ...
5
votes
1answer
112 views
Improving XNA's default project template
I hope this isn't getting annoying, but I've asked a lot of questions about improving my game lately:
How can I improve my game project design?
Using the observer pattern with collision detection
Is ...
3
votes
0answers
44 views
Inheritance and setting up for an API request
I am setting up a class to be used for an API request (with JavaScriptSerializer). I am using it to send a complaint to their ticketing systems.
For example I ...
5
votes
2answers
79 views
Avoiding casts in abstract types
I asked this question on Stack Overflow and in the comments someone had this to say.
In a proper design, you should almost never have to do a dynamic_cast, even if it's hidden inside some nice ...
