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What does "declaration" mean in programming?
declaration 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 statement that introduces a new name into a program, such as a variable, function, or class. In TypeScript, a declaration may also include a type annotation.
Example
"let username: string; // this is a variable declaration (no assignment yet)"
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