Object-Oriented Programming or functional programming — which is closer?

The choice between OOP and functional programming depends on the task and personal preferences.

OOP (Object-Oriented Programming) is well-suited for modeling complex systems with state and behavior, where encapsulation, inheritance, and polymorphism are important. It is convenient for projects with a hierarchy of objects and mutable state.

Functional programming focuses on pure functions, immutability of data, and the absence of side effects. This simplifies testing, parallelism, and code predictability.

In DevOps, a functional approach is often closer, as infrastructure as code, automation, and declarative configurations align well with functional programming principles. However, in real projects, a mixed approach is often used.

It is important to understand the concepts of both paradigms and apply them where they are most effective.