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What does "extends" mean in programming?
extends is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
A keyword used to create a subclass that inherits from a parent class, or to extend an interface. The subclass gains all properties and methods of the parent.
Example
"class Admin extends User { role = 'admin'; }"
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