🔰polymorphism

same method name, different callers.

polymorphism means "same method name, different callers".

dog.speak()    // caller: dog
cat.speak()    // caller: cat

⭐️ 重點

function overloading vs. polymorphism

• function overloading：same function name, different parameter(s).

• polymorphism：same method name, different callers.

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