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How much are SOLID principles in OOP programming (and JVM languages specifically) just a mindless following of a set of ideas that aren't always the best solution? (programming.dev)

submitted 6 days ago by iByteABit@programming.dev to c/programming@programming.dev

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As a Java engineer in the web development industry for several years now, having heard multiple times that X is good because of SOLID principles or Y is bad because it breaks SOLID principles, and having to memorize the "good" ways to do everything before an interview etc, I find it harder and harder to do when I really start to dive into the real reason I'm doing something in a particular way.

One example is creating an interface for every goddamn class I make because of "loose coupling" when in reality none of these classes are ever going to have an alternative implementation.

Also the more I get into languages like Rust, the more these doubts are increasing and leading me to believe that most of it is just dogma that has gone far beyond its initial motivations and goals and is now just a mindless OOP circlejerk.

There are definitely occasions when these principles do make sense, especially in an OOP environment, and they can also make some design patterns really satisfying and easy.

What are your opinions on this?

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[–] FizzyOrange@programming.dev 15 points 5 days ago (1 children)

One example is creating an interface for every goddamn class I make because of “loose coupling” when in reality none of these classes are ever going to have an alternative implementation.

Sounds like you've learned the answer!

Virtual all programming principles like that should never be applied blindly in all situations. You basically need to develop taste through experience... and caring about code quality (lots of people have experience but don't give a shit what they're excreting).

Stuff like DRY and SOLID are guidelines not rules.

[–] biotin7@sopuli.xyz 4 points 4 days ago* (last edited 4 days ago) (2 children)

What about KISS ? Now this SHOULD be a rule. Simple is the best

[–] FizzyOrange@programming.dev 3 points 4 days ago

Even KISS. Sometimes things just have to be complex. Of course you should aim for simplicity where possible, but I've seen people fight against better and more capable options just because they weren't as simple and thus violated the KISS "rule".

[–] jcr@jlai.lu 4 points 4 days ago

DRY SOLID KISS