All Questions
Tagged with functional-programming object-oriented
95 questions
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API design for precomputation cache [closed]
In my numeric code library I have a function totient_sum that depends on an expensive one-time precomputation totsum_range = [...], then different calls to totient_sum(n) are quick. There are several ...
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5
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Anemic Models vs. Rich Models: When to Use?
I'm working on an application and have encountered two different approaches for organizing business logic. There's a general consensus that application rules should be handled in higher layers, so I ...
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79
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10
answers
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How functional programming achieves "No runtime exceptions"
How does a functional programming language, such as Elm, achieve "No runtime exceptions"?
Coming from an OOP background, runtime exceptions have been part of whatever framework that is based ...
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Return considered harmful? Can code be functional without it?
OK, so the title is a little clickbaity but seriously I've been on a tell, don't ask (TDA) kick for a while. I like how it encourages methods to be used as messages in true object-oriented fashion. ...
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38
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7
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Do you need to think about encapsulation if you can ensure immutability?
Encapsulation
In object-oriented programming (OOP), encapsulation refers to the
bundling of data with the methods that operate on that data, or the
restricting of direct access to some of an ...
2
votes
1
answer
288
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Did the term "decorator" originate with OOP design patterns?
The Decorator pattern allows behaviour to be dynamically added to an existing object, effectively "decorating" it with new behaviour. While the pattern as formalised and named seems to have ...
- 207
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3
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Are "Distributed Enums" an Anti-pattern in non-OOP like they seem to be considered in OOP?
I have recently read about the so-called "distributed enum anti-pattern." In particular, as it relates to using enums in conditional statements. (The idea is apparently that if you were to ...
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30
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18
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What would you do if your client required you not to use object-oriented programming?
I am writing a program to simulate the activity of ants in a grid (PDF). The ant can move around, pick up things and drop things.
The problem is while the action of the ants and the positions of each ...
2
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1
answer
130
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OO vs FP: What is a good approach to understanding if heavy wrapper classes should be used?
Consider a processing system which ingests objects from an external source and performs extensive processing. One example could be objects detected by a computer vision system which are then fed into ...
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9
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7
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what can go wrong in context of functional programming if my object is mutable?
I can see the benefits of mutable vs immutable objects like immutable objects take away lot of hard to troubleshoot issues in multi threaded programming due to shared and writeable state. On the ...
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-2
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1
answer
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Which paradigm(between OOP and Functional) should be chosen for a given task?
Which paradigm(between OOP and Functional) should be chosen for a given task ? What are the tradeoffs between these two styles ? In which case using Functional makes sense and vice versa,in which case ...
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5
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Functional Programming vs. OOP [closed]
I've heard a lot of talk about using functional languages such as Haskell as of late. What are some of the big differences, pros and cons of functional programming vs. object-oriented programming?
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Given a herd of horses, how do I find the average horn length of all unicorns?
The question above is an abstract example of a common problem I encounter in legacy code, or more accurately, problems resulting from previous attempts at solving this problem.
I can think of at ...
- 534
1
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3
answers
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Why is white box testing discouraged in OOP?
It seems the general consensus for unit testing classes is to test your object through its public interface only. So if you wanted to test the removeElement method on a LinkedList class you'd need to ...
user275704
5
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3
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How could a computer program do anything if everything is immutable?
I feel this is a bad question because I probably do not understand what I am talking about. In my effort to learn about functional programming, I became stumped on understanding the idea of immutable ...
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