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What does "type annotation" mean in programming?
type annotation 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
Syntax that explicitly states the type of a variable, parameter, or return value. In TypeScript, type annotations use a colon followed by the type name.
Example
"function greet(name: string): string { return 'Hello, ' + name; }"
Related terms
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