All Questions
Tagged with design-patternsanti-patterns
82 questions
5votes
1answer
307views
What do you call an enum that translates its own values?
I see this pattern a lot, especially with countries, or more generally regions. An enum is defined with additional fields and with methods that translate to and from these values. Example: import ...
- 159
2votes
1answer
330views
In poltergeist, whats wrong with "solely to trigger or initialize several other objects"? Isn't it is a good use of encapsulation and reuse?
After reading What differentiates function objects from poltergeists?, according to the definition of poltergeist, I still don't understand why would "poltergeist" be a bad pattern: A ...
- 2,983
0votes
0answers
116views
Is having many thin factories an antipattern?
I need to perform the following task: for a user [email protected], store a blob of data into their dedicated data store. DataStoreService is what actually stores the blob of data in the user's store, ...
- 854
3votes
2answers
511views
Creating an abstraction just for exception handling - a pattern or anti-pattern?
Assume that an external library or framework not under our control exposes a Controller API: abstract class Controller { abstract fun call(): Result } Assume that we want to handle exceptions ...
0votes
3answers
218views
What pattern is a function that returns a component?
Ok I have a bunch of components that all have the same logic but have different css classes. So I wanted to create a sort of factory function that takes the names of the classes as its argument and ...
- 165
0votes
1answer
267views
Is this dependency propogation an anti-pattern, and how do I remove it?
Module A contains a gap buffer for manipulating text and some associated methods. Relevant to this question is the dependency on a Module B, used for syntax highlighting of text. Module A also ...
user361757
44votes
13answers
9kviews
Is it an (anti-)pattern for a function to have an argument to decide which other function to call?
Consider your have an enumeration that looks like this: enum ProcessingType { CONFABULATION, RETICULATION, SPLICING; } And you have a web-service that looks like this: class WebService { ...
- 1,039
1vote
2answers
651views
No trivial god-class refactoring
Consider you have the following code: class UserContainer { List<User> user; //some methods to get specific users, for example users, which are higher than 1,70meters } The User have a ...
0votes
0answers
75views
Can someone suggest what pattern I used mistakenly and is it correct in this situation. Any alternative?
Client_1 uses --> IService_1 and thus Service1_impl public interface IService_1 { void DoTask_1(); } public class Service1_impl : IService_1 { private readonly IDepService_1_v1 ...
- 181
6votes
2answers
155views
Resource that has different state based on input parameters
Let's say I have a REST api endpoint that is getting a resource called a "purchasable" (an item that a user can purchase). Here is an example of what this might look like. Endpoint: GET /...
- 71
4votes
5answers
1kviews
How to fix a pair of tightly coupled classes that store references to each other?
I have the following situation: class User { public Thing curThing; } //each thing can only belong to one user at a time //And vice versa class Thing { ...
- 149
0votes
1answer
395views
Is an antipattern returning differente objects in a single rest method?
I have seen around the Internet several rest web services with the following behaviour. In case there are any errors, they return a Error object, otherwise they return, say, MyClass. See the ...
- 211
116votes
17answers
24kviews
Why should 'boneheaded' exceptions not be caught, especially in server code?
I am confused because in quite a few places I've already read that the so-called 'boneheaded' exceptions (ones that result from bugs in code) are not supposed to be caught. Instead, they must be ...
- 4,519
2votes
3answers
472views
Swappable state object or decoupling data and functions
I come from OOP pradigm and I also know a bit about functional programming and its advantages. Over time I came to like the separation of data and transformations that are applied to it using pure ...
- 551
0votes
1answer
180views
How to bring a code to conformance with tell, don't ask without creating tons of methods on other classes?
It used to be fairly common for people to call a getter, do some calculation on it, then call a setter with the result. This is a clear sign your calculation actually belongs to the class you called ...
- 4,519
