I'm diving back into Object-Oriented Programming (OOP) and I want to make sure I fully grasp the concept of objects. Initially, I learned that OOP involves creating a class, defining methods, and managing data within those instances. But now I see that other programming languages, like Rust, handle similar concepts with structs, which has me reconsidering my understanding. Here are the key points I'm curious about: 1. What exactly is an object in programming terms? 2. How is method and data management handled at a low level—do they get scattered around in memory, or is it all pointer-based? 3. How does an instance of a class without methods differ from a struct variable? 4. Lastly, how are methods distinct from regular functions that act on properties of the object?
2 Answers
In its essence, an object is simply a container for both code and data, while a class outlines what an object contains. The process to create an object, known as instantiation, requires allocating memory, initializing any fields or properties, and then invoking any constructor methods that define behavior upon creation. This allows users to interact with the object without needing to understand all the code that operates internally.
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