"But from a practical perspective OO is a great idea because it makes many things so much easier."
This seems true at first, but after having worked with C# a while I'm not so sure about that. OO introduces some weird issues that aren't immediately apparent:
1. Verbosity
When the shortest method call looks like "abcObject.functionXYZ()", code gets huge really fast character-wise. This actually does make it harder to read and debug existing code.
2. Multithreading
Multithreading in any programming paradigm is a pain, I'd give you that. But OO exacerbates the problem because of the way each property of an object is essentially a global state within its local scope. It makes it quite tricky to enforce thread safety.
Having said that, I'm not sure that rewriting it in, say, a functional style would make things simpler. Sure it is easier to prove correctness, but as soon as you introduce IOs, everything goes to hell. I guess OO seems to be the worst pattern, except for all others that have been tried.
I don't think verbosity is an issue with OO any more than it is with any other paradigm. 'abcObject.functionXYZ()' is not any more verbose than 'functionXYZ(abcDataStructure)'. I think it's mostly a question of the community's coding style, and C♯ and Java are notoriously verbose even in their standard library.
I think the advantage of OO is that is transforms the code into something that is closer to the "human" interpretation. Modelling the problem like we have it in real world. Instead of thinking like a computer, you can more easily think as a human and let the computer do the rest. Although of course it comes with trade offs.
This seems true at first, but after having worked with C# a while I'm not so sure about that. OO introduces some weird issues that aren't immediately apparent: 1. Verbosity When the shortest method call looks like "abcObject.functionXYZ()", code gets huge really fast character-wise. This actually does make it harder to read and debug existing code.
2. Multithreading Multithreading in any programming paradigm is a pain, I'd give you that. But OO exacerbates the problem because of the way each property of an object is essentially a global state within its local scope. It makes it quite tricky to enforce thread safety.
Having said that, I'm not sure that rewriting it in, say, a functional style would make things simpler. Sure it is easier to prove correctness, but as soon as you introduce IOs, everything goes to hell. I guess OO seems to be the worst pattern, except for all others that have been tried.