All Questions
8 questions
2
votes
5
answers
2k
views
Design pattern for creating object hidden from client
I am having difficulty understanding which design pattern would be best for the following scenario. An application uses a database. That database can either be the production version (SQL) or a test ...
- 1,224
3
votes
2
answers
3k
views
Design pattern for applying different taxes based on many different factors
I've been given the task to design a system that has a product's price have different amounts of different taxes based on different factors.
For example in the US you would get a few - one based on ...
- 41
3
votes
2
answers
1k
views
How do I design a buffer for a console?
Problem
I have a graphical console widget that receives output from an interpreter. Unfortunately the console is not fast enough to paint the output in real-time. So I had to implement a buffer(FIFO ...
- 131
2
votes
1
answer
734
views
Designing classes the right way [closed]
I am trying to design my classes in the optimal way for the following scenario.
A city has metro lines covering a number of stations.There are 4 lines represented by 4 colors.The user has to enter ...
- 139
4
votes
2
answers
14k
views
How do you show the exception handler in a class diagram?
I have one exception handler class. I want to show this class in the uml -- class diagram. But, I do not know how to represent relationship between class <X> and exception handler class. How can ...
- 41
3
votes
1
answer
156
views
Access items of a container with a pattern
I've two C++ classes with a relation: a container class which has a list of items. For example a library has got many books. The classes are the library and the book.
Now from the external world I ...
- 133
3
votes
1
answer
1k
views
What's a good notation for showing MVC interactions?
I'm developing various websites and functionality to cater to various different use-cases up in Django.
Is there a good notation for showing what behaviour is at each stage, e.g., swimlanes.
I use ...
- 761
2
votes
1
answer
2k
views
How do you do to create the ViewModel part of your MVVM designs?
Sometimes, when I plan to create a program using this architectural pattern, I've got a lot of difficulties when I'm in the View Model phase.
I'm using WAF Framework to develop this architectural ...
- 121