Questions about problem solving and planning for a solution through software design.

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5
votes
4answers
422 views

Passing compound object for parameters

I have different data modules, which take a couple of parameters from a configuration list. Do you think it's ok to pass a configuration object as a whole module1(config) and let the module pick what ...
1
vote
1answer
493 views

How to structure our Javascript so that it is easily editable, testable, and can make calls to render a view without knowing specifics about the view

I am working on a web app that displays some data and uses javascript. Right now, we are serving up parts of our js (to display certain types of information, ie "Render a View") via our server which ...
18
votes
9answers
1k views

Good design: How much hackyness is acceptable? [duplicate]

Possible Duplicate: Prototyping vs. Clean Code at the early stages I'm right in front of a difficult decision. I have a problem in my codebase (it's in C++), which I could solve in two ...
5
votes
10answers
9k views

What do we mean by “design” in software engineering?

I have been reading about different software methodologies. Every method has a design phase to some extent, more or less. I am not clear on what we mean by designing. Does this mean writing your ...
4
votes
1answer
285 views

Derive from a base class but not include a condition in the base class's method

The current code looks like this: public class Details { Public void Populate() { WriteChapterDetails(); } public void WriteChapterDetails() { if ( ...
6
votes
0answers
341 views

How to manage a relatively large one-man project? [duplicate]

I am basically working on https://github.com/KirisurfProject/ entirely alone. This is around 4000 lines of Go code, plus around 1000 lines of Racket (a Lisp) code for the GUI part; the equivalent in ...
3
votes
1answer
636 views

Composition vs. Inheritance [duplicate]

Here's what is given: public interface Request {} // there are 20 subclasses of Request public class CreateUserRequest implements Request { @NotEmpty public String userName; } // request ...
205
votes
16answers
15k views

Started wrong with a project. Should I start over?

I'm a beginner web developer (one year of experience). A couple of weeks after graduating, I got offered a job to build a web application for a company whose owner is not much of a tech guy. He ...
55
votes
10answers
3k views

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 ...
58
votes
11answers
5k views

“Everything is a Map”, am I doing this right?

I watched Stuart Sierra's talk "Thinking In Data" and took one of the ideas from it as a design principle in this game I'm making. The difference is he's working in Clojure and I'm working in ...
30
votes
15answers
2k views

What can programmers learn from the construction industry? [closed]

When talking with colleagues about software design and development principles, I've noticed one of the most common sources for analogies is the construction industry. We build software and we ...
39
votes
7answers
3k views

Can a system be 100% Data Driven?

My new boss has been working on this project for many years. I've only been here a few weeks, but I am not sure it's possible. He would like to design a system that is "100% data driven". So if we ...
30
votes
2answers
16k views

When to use Advanced Message Queuing Protocol like RabbitMQ? [closed]

Can somebody explain me in what use-cases I should consider using AMQP like e.g. RabbitMQ? What are the pros and cons?
28
votes
8answers
5k views

Can manager classes be a sign of bad architecture?

Lately I've begun to think that having lots of manager classes in your design is a bad thing. The idea hasn't matured enough for me to make a compelling argument, but here's a few general points: I ...
25
votes
12answers
2k views

How large is ok for a Class?

I’m a long time developer (I’m 49) but rather new to object oriented development. I’ve been reading about OO since Bertrand Meyer’s Eiffel, but have done really little OO programming. The point is ...
14
votes
3answers
4k views

Should I use a config file or database for storing business rules?

I have recently been reading The Pragmatic Programmer which states that: Details mess up our pristine code—especially if they change frequently. Every time we have to go in and change the code to ...
52
votes
10answers
3k views

What is meant by, “A user shouldn't decide whether it is an Admin or not. The Privileges or Security system should.”

The example used in the question pass bare minimum data to a function touches on the best way to determine whether the user is an administrator or not. One common answer was: user.isAdmin() This ...
16
votes
3answers
9k views

Is there a list of common usernames to reserve in a new system?

I need to reserve usernames in my new website. These generally fall into three categories 1) usernames no-one should have (eg: admin, user, service, help, root, etc) 2) names of super famous people ...
15
votes
4answers
476 views

How can I get free artwork for my free software? [closed]

So many free software projects have beautiful art, specially websites, that I wonder where the coders meet their artists. Is there some place to ask for this besides the local art majors' schoolboard? ...
15
votes
5answers
11k views

Design documents as part of Agile

At my workplace, we face a challenge in that "agile" too often has meant "vague requirements, bad acceptance criteria, good luck!" We're trying to address that, as a general improvement effort. So, ...
14
votes
3answers
983 views

How would one go about building pluggable software?

If you have an application of some sort and you want your users to be able to write plugins for it, how should the application be designed? What do you have to take into account, what design ...
11
votes
6answers
983 views

Development Approach: User Interface In or Domain Model Out?

While I've never delivered anything using Smalltalk, my brief time playing with it has definitely left its mark. The only way to describe the experience is MVC the way it was meant to be. ...
4
votes
2answers
6k views

ASP.NET MVC 3 (C#) Software Architecture

I am starting on a relatively large and ambitious ASP.NET MVC 3 project and just thinking about the best way to organize my code. The project is basically going to be a general management system that ...
25
votes
7answers
2k views

Are classes with only a single method a problem?

I am currently working on a software project that performs compression and indexing on video surveillance footage. The compression works by splitting background and foreground objects, then saving the ...
14
votes
6answers
2k views

Loose Coupling in Object Oriented Design

I am trying to learn GRASP and I found this explained (here on page 3) about Low Coupling and I was very surprised when I found this: Consider the method addTrack for an Album class, two possible ...
6
votes
4answers
1k views

How much time do you spend on design before coding? [duplicate]

In my experience, it is useful to spend a little while sketching plans for a project before getting into code. Such planning usually includes choosing frameworks/tools, writing requirements and ...
2
votes
3answers
622 views

How can I effectively manage long-term feature development and short-term bug fixing at the same time?

We have a huge C, and C++ code base. There is a plan to add a new feature into the existing system, but, this should happen only after 3 to 4 months. So, we are looking for best possible options. ...
14
votes
7answers
282 views

What optimizations are premature? [duplicate]

I've been here for nearly a month and it seems that people have a tendency to be eager to use the "Premature Optimization is the root of all evil" argument as soon as someone mentions efficiency. ...
11
votes
3answers
931 views

Dependency Inversion Principle: How to define “high-level policy” and “low-level detail” to other people?

I am trying to explain the dependency inversion principle to my (mostly junior) colleagues. How can we define which one is the "high-level policy" and which one is the "low-level detail" in a ...
6
votes
5answers
759 views

Should I always encapsulate an internal data structure entirely?

Please consider this class: class ClassA{ private Thing[] things; // stores data // stuff omitted public Thing[] getThings(){ return things; } } This class exposes the ...
6
votes
3answers
610 views

Why it is not recommended to have set-only property?

Today at work one of my colleague reviewed my code, and suggested me to remove set-only property and use method insted. As we both were busy with other stuffs, he told me to look at Property Design ...
2
votes
1answer
1k views

How to design a log() method that can easily be accessed from the outside of the Console class?

Recently my team has programmed a custom developer console in a video game which can easily be hidden or displayed, because it's more comfortable and less of a hassle. The Console class contains a ...
18
votes
8answers
5k views

What is the benefit of switching on Strings in Java 7?

When I was starting to programme in Java, the fact that switch statements didn't take strings frustrated me. Then on using Enums, I realised the benefits that you get with them rather than passing ...
13
votes
7answers
971 views

Should a design document contain a discussion of the pros/cons to a given design or should it focus on facts and rationale?

I'm currently in the process of updating a design document so that it is correct and up-to-date for future developers. Currently, the document focuses on only the facts, presenting how the design is. ...
8
votes
8answers
490 views

Refactoring or upgrading databases to handle new features

Several responses to a database schema question, suggested an additional table to normalize a database for a feature that is not part of the current requirements (A UserDepartment table to allow for a ...
8
votes
7answers
488 views

What's the best way to prepare your design & code for those “unknown unknown” bugs from day one?

I am just wondering, is there any practical method or technique or even tricks to get avoid those "unknown unknown" bugs especially those nasty and random ones which are often emerge at the last ...
8
votes
10answers
1k views

What should be first - functionality or design? [duplicate]

I've started reading a book from Head First series about OOP and Design. In a first chapter it is stated I have to worry about design of my application just after basic functionality is ready. Basic ...
7
votes
1answer
765 views

Log to file or to database table?

I'm developing a web application which uses MS SQL for various data: including users, user accounts, user licenses, license prices, invoices. I need to log users' real-time usage of the system, and ...
7
votes
6answers
4k views

How does rapid prototyping fit into an agile methodology?

I work for a large company, which dictates the use of agile processes. For example, for our projects, we use cloud-based services that are specifically targeted at managing agile development. The ...
7
votes
4answers
1k views

Avoid having an initialization method

I have this existing code where they have a class and an initialization method in that class. It is expected that once the object of the class is created, they need to call initialize on it. Reason ...
4
votes
4answers
2k views

Best Method of function parameter validation

I've been dabbling with the idea of creating my own CMS for the experience and because it would be fun to run my website off my own code base. One of the decisions I keep coming back to is how best ...
4
votes
5answers
716 views

Proper OO design for State and Command

I'm working (a bit) on a (turn-based strategy) game. There are two classes relevant for the question: State: This is an immutable class, which exposes all its fields (either via getters or another ...
3
votes
3answers
671 views

What should I name these methods? [closed]

I have two interfaces, one with and one without generic type parameters. The non-generic interface is used internally so that I can store instances of the generic interface in a collection. All would ...
2
votes
1answer
316 views

How should object identification be managed?

I have a java/swing application in (hopefully good) MVC structure. Here is a overview of my model classes: One or more workers may work at one working location and one worker may work at different ...
14
votes
3answers
28k views

Best way to unit test methods that call other methods inside same class

I was recently discussing with some friends which of the following 2 methods is best to stub return results or calls to methods inside same class from methods inside same class. This is a very ...
8
votes
5answers
470 views

Reengineering the project from scratch [duplicate]

Possible Duplicate: When do you rebuild an application or keep on fixing the existing one I am currently working on a project that has been in development for the last few years used ...
8
votes
6answers
5k views

Are Get-Set methods a violation of Encapsulation? [duplicate]

Possible Duplicate: When are Getters and Setters Justified In an Object oriented framework, one believes there must be strict encapsulation. Hence, internal variables are not to be exposed ...
7
votes
5answers
2k views

Abstract DAL - Use Interface with Internal Class?

We have a business logic layer (BLL) that is tightly coupled to our data access layer (DAL). We make calls like this: using (FooData data = new FooData()) { data.DoSomething(); } It's important ...
7
votes
6answers
2k views

Can the Strategy pattern be implemented without significant branching?

The Strategy pattern works well to avoid huge if...else constructs and make it easier to add or replace functionality. However, it still leaves one flaw in my opinion. It seems like in every ...
5
votes
1answer
600 views

Design For Asynchronous User Interface

I have been working on a integration that has posed an interesting user interface conundrum that I would like suggestions for. The user interface is displayed within a third party product. The state ...