TypeScript16 min readTypeScript Arrays and Tuples
Type arrays and tuples correctly to ensure element safety and fixed-length data structures.
David Miller
December 21, 2025
0.0k0
Arrays and tuples store multiple values. ## Typed array ```ts let nums: number[] = [1, 2, 3]; let names: Array<string> = ["Tom", "Sarah"]; ``` ## Tuple (fixed structure) ```ts let user: [number, string] = [1, "Tom"]; ``` ## Tuple with labels ```ts let point: [x: number, y: number] = [10, 20]; ``` ## Use case Tuples for fixed formats, arrays for lists. ## Remember - Arrays: same type items - Tuples: fixed order & types
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