FAQ: Reference Fundamentals - Polymorphism

This community-built FAQ covers the “Polymorphism” exercise from the lesson “Reference Fundamentals”.

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Ummm. Does anyone know what an interface mean in this particular lesson context or in the context of Polymorphism ?
I would appreciate it if anyone could say a thing or two, regardless of how little it may be, pertaining to my question. Thank you.

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Hey there, since writing this comment, have you gained some insights on this topic? I would greatly appreciate any input.

I’m guessing interface here means a common reference which multiple classes implement (possibly in different ways). But yeah, very unsure to be honest.

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i found this, even though it’s been a while. i hope this helps other people who might wonder too.

in Computer Science, an interface is:
Device that allows communication between two elements of a computer system.

I admit it’s confusing the way the lesson uses ‘interface’. We are given a clue: ‘interface in the general meaning’. My understanding is that ‘interface’ here means how ‘we interact with’ objects.

CodeAcademy has a lesson on interfaces, which you can find here:https://www.codecademy.com/courses/learn-c-sharp-classes-objects-interfaces-and-inheritance/lessons/csharp-interfaces/exercises/introduction-to-interfaces

Documentation for what an interface is in C#: https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/interface

If you understand inheritance, interfaces are similar to that. You can think of an interface as a superclass that you cannot create an instance of.

Basically, an interface defines the methods and properties that an object has to have, So you might have an interface called IAutomobile, and the class that implements that interface is called Car If IAutomobile has the property Color and the method SpeedUp(), Car must also have the property Color and the method SpeedUp() because it implements that interface.

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