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To be fair, as I've said elsewhere on the thread I use OO in places - like if I expose an API to whatever i'm writing that will often be OO.
And I tend to use OO here and there for other reasons when I'm stuck in a hard OO env like Java or C#
I limit its use though:
1. Does it help explain the code?
2. Does it work with the rest of the code rather than against it?
3. Does it encapsulate an abstraction such that it makes it simpler to employ?
There are so many times when the answers to those questions are no, and I see people using objects. See @SanderRossel's console app upthread - he was ribbing me but it's a good example of class misuse.
The problem isn't OO; slavish fanatical adherence to anything at all screws everything up -- and it's certainly non-evolutionary. Doing things one way and one way only results in restrictions to growth and expansion.
Given the above immutable fact, rigid adherence to OO practices is obviously wrong before even going into details, so I won't waste my time going into any (plus I don't have a week to spare).
I wanna be a eunuchs developer! Pass me a bread knife!
The long version:
I tend to write a bunch of interfaces (as necessary) that explain the function of the code.
Take, for example, an IUserRepository.
When I see a (ASP.NET Core) Controller being injected with an IUserRepository I know this Controller does something with users.
I don't know (or care) where the users come from, but I know I need them.
If you look at the specific code that uses the IUserRepository you'll find stuff like userRepository.GetUser(id), which is way more descriptive than some code that accesses a database.
So in that sense, I often use classes and methods to describe what my code is doing.
That, for me, and to lesser extent re-use of code, are the biggest pros of OOP.
I'm not a big fan of re-use anymore.
Back in the day I re-used all the things, but just because two pieces of code incidentally need the same results doesn't mean they do the same thing.
I now make a clear split of functional re-use and technical re-use.
Functional re-use is rare, because that would mean a user has two ways to do the exact same thing.
It happens, but not all that often.
I think I write my code less "OOP" than seven or even five years ago.
The OOP I still write is more architectural in nature (like I now make heavy use of DI and interfaces, but not so much of base classes and such).
I've written some simple programs in Haskell, a purely functional language, but I think that doesn't work all that well.
It comes natural to think in objects and to have side effects at some point.
Nevertheless I started to write more functional in my OOP code, mostly no side effects.
I'm pretty sure my bug-to-code ratio went down since I've employed the no side effects approach.
A function just does its thing and produces a result, but it won't affect the overall flow or state of the program.
All the results come together in the calling function, mostly a controller, and then I do all the side effects in one spot.
Makes the code a lot easier to read and you have a lot less to think about.
It's still OOP, so it doesn't always work like that, but I try when I can.
Another change in my code is the use of delegates instead of one-function interfaces.
Makes for less abstraction and classes and it's still easy to read.
The biggest game changer for me, and this saved me a lot of bugs, was when I started to use curly braces for one line if and loop statements though
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
The problem with professors is they want to teach their students 'low level stuff', like, for instance, arrays, using C++. It can be done, of course, but it isn't, in my opinion, the smartest way to start teaching C++.
Might be there are also very-old-school teachers that don't appreciate (or simply are unaware of) the powerful OOP support C++ provides. But I believe this is a negligible minority.
I think the real world is similar. They always want me to, say, distinguish between different people when I see them as a homogenous grey map. They even try to tell that this "object" belongs to "that" object, while I think I should be free to use anything the way I want to. They even say that there are things I am not allowed to look at, it is their "private life". This idea of the world being split into distinct "objects" really bothers me.