Object-oriented design is the process of planning a system of interacting objects for the purpose of solving a software problem.
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What can go wrong if Liskov substitution principle is not followed while coding?
I was following this highly voted question on possible violation of Liskov Substitution principle . I know what Liskov Substitution principle is but what is still not clear in my mind is what might ...
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5answers
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Is this a violation of the Liskov Substitution Principle?
Say we have a list of Task entities, and a ProjectTask sub type. Tasks can be closed at any time, except ProjectTasks which cannot be closed once they have a status of Started. The UI should ensure ...
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1answer
54 views
Object behaviour or separate class?
When it comes to OO database access you see two common approaches - the first is to provide a class (say "Customer") with methods such as Retrieve(), Update(), Delete(), etc. The other is to keep the ...
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9answers
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My proposed design is usually worse than my colleague's - how do I get better? [closed]
I have been programming for couple of years and am generally good when it comes to fixing problems and creating small-to-medium scripts, however, I'm generally not good at designing large scale ...
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2answers
154 views
How to avoid javascript becoming spaghetti code?
I've done quite a lot of javascript over the years and I'm using a more object-oriented approach, specifically with the module pattern. Which kind of approach do you do use to avoid a bigger code-base ...
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2answers
43 views
Making a design for a Problem [closed]
I have written many codes using OOPS and I am still to understand when is a code good enough to be accepted by experts. The thought procedure of every man is different and so is the design. My ...
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3answers
117 views
Any tips/tricks/resources on actually TEACHING a class on OOP? [closed]
I may slowly be getting into teaching an Object-Orientated Programming class at my school in a year or two. I just graduated and work at my school as an Application Programmer. I'd first start off as ...
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1answer
66 views
How can I design my classes to include calendar events stored in a database?
I'm developing a web calendar in php (using Symfony2) inspired by iCal for a project of mine.
At this moment, I have two classes: a class "Calendar" and a class "CalendarCell".
Here you are the two ...
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1answer
91 views
Finding the best practice for a game simulating tool
I'm studying Java right now, and I'm thinking of this tool as my practice project.
The game is "League of Legends" in case anyone knows it, I'm not actually simulating the game as in simulating game ...
3
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1answer
81 views
The Meaning of Unified in UML
UML and other related modelling languages are exists in most of the system engineering fields to represent the system, flow, relations in a structured way. UML also is one of the modelling language ...
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3answers
173 views
What is a good design model for my new class?
I am a beginning programmer who, after trying to manage over 2000 lines of procedural php code, now has discovered the value of OOP. I have read a few books to get me up to speed on the beginning ...
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6answers
685 views
Should an object know its own ID?
obj.id seems fairly common and also seems to fall within the range of something an object could know about itself. I find myself asking why should my object know its own id?
It doesn't seem to have a ...
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3answers
309 views
Where to put business logic in MVC design?
I have created a simple MVC java application that adds records through data forms to a database.
my app collects data, it also validates it and stores it. This is because the data is being sourced ...
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1answer
80 views
design pattern advice: graph -> computation
I have a domain model, persisted in a database, which represents a graph. A graph consists of nodes (e.g. NodeTypeA, NodeTypeB) which are connected via branches. The two generic elements (nodes and ...
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1answer
139 views
Domain Models (PHP)
I have been programming in PHP for several years and have, in the past, adopted methods of my own to handle data within my applications.
I have built my own MVC, in the past, and have a reasonable ...
