Revision Notes/OOP Principles
Field Entry - OOP Principles
Abstraction
Hiding complex implementation details and showing only the essential features of an object — focusing on WHAT it does, not HOW it does it.
Field Note - Real-world Analogy
“Driving a car. You use the steering wheel, gas pedal, and brake — that's the abstract interface. You don't need to understand combustion engines, differential gears, or ABS algorithms. The car's complex internals are abstracted away behind a simple interface that anyone can learn.”
Field Observations - Key Topics Covered
Abstraction means you work with a simplified model. When you call list.sort(), you don't need to know which sorting algorithm it uses or how memory is managed. You just know what it does: sorts the list. The how is hidden — that's abstraction.
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