Tuples

Tuples are arrays with a fixed length and specific types at each position. They're like arrays, but more structured.
// Array: any number of strings
const names: Array<string> = ['Alice', 'Bob']

// Tuple: exactly two elements, string then number
const person: [string, number] = ['Alice', 30]

When to Use Tuples

Tuples are great for:
  • Returning multiple values from functions
  • Coordinates like [x, y] or [lat, long]
  • Key-value pairs like [key, value]
  • Named positions where order matters
function getNameAndAge(): [string, number] {
	return ['Alice', 30]
}

const [name, age] = getNameAndAge() // Destructuring!

Tuple vs Object

When should you use each?
// Tuple - positional, compact
const point: [number, number] = [10, 20]

// Object - named, self-documenting
const point = { x: 10, y: 20 }
Use tuples when position is meaningful and the data is simple. Use objects when you need named properties or the structure is complex.
In this exercise, you'll work with tuples for structured return values.
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