IB Computer Science Topic B3.2.2: Constructing Code to Model Polymorphism and Its Various Forms, Such as Method Overriding Notes

Modeling Polymorphism and Its Various Forms

Definition

Polymorphism

Polymorphism means “many forms” - the ability of objects to take on different forms depending on context.

The same method name or operator can behave differently based on the object or arguments involved.

Promotes flexibility, reusability, and cleaner code in OOP.

Hint

Think of polymorphism as a single interface with multiple behaviours.

Common Mistake

Confusing polymorphism with inheritance: inheritance is the mechanism, polymorphism is the behaviour.

Forms of Polymorphism

Compile-time (Static):

Decided at compile time.
Achieved by method overloading or operator overloading (Python supports operator overloading but not true method overloading).

Runtime (Dynamic):

Decided at runtime.
Achieved by method overriding in subclasses.

Hint

Static = overloading, decided early
Dynamic = overriding, decided late.

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Note

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Tip

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Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

IB Computer Science Topic B3.2.2: Constructing Code to Model Polymorphism and Its Various Forms, Such as Method Overriding Notes

IB Computer Science Topic B3.2.2: Constructing Code to Model Polymorphism and Its Various Forms, Such as Method Overriding Notes

Modeling Polymorphism and Its Various Forms

Forms of Polymorphism

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

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Excepteur sint occaecat cupidatat non proident

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Modeling Polymorphism and Its Various Forms

Forms of Polymorphism

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IB Computer Science Topic B3.2.2: Constructing Code to Model Polymorphism and Its Various Forms, Such as Method Overriding Notes

A1 Computer fundamentals4 subtopics

A2 Networks4 subtopics

A3 Databases4 subtopics

A4 Machine learning4 subtopics

B1 Computational thinking1 subtopic

B2 Programming5 subtopics

B3 Object-oriented programming2 subtopics

B4 Abstract data types (HL only)1 subtopic

IB Computer Science Topic B3.2.2: Constructing Code to Model Polymorphism and Its Various Forms, Such as Method Overriding Notes

A1 Computer fundamentals4 subtopics

A2 Networks4 subtopics

A3 Databases4 subtopics

A4 Machine learning4 subtopics

B1 Computational thinking1 subtopic

B2 Programming5 subtopics

B3 Object-oriented programming2 subtopics

B4 Abstract data types (HL only)1 subtopic

Modeling Polymorphism and Its Various Forms

Forms of Polymorphism

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Modeling Polymorphism and Its Various Forms

Forms of Polymorphism

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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