Arrays, Objects आणि Tuples

// Number array
let scores: number[] = [90, 85, 92];
// किंवा
let scores2: Array<number> = [90, 85, 92];

// String array
let cities: string[] = ["Pune", "Mumbai", "Nashik"];

// Mixed array (union type)
let mixed: (string | number)[] = ["hello", 42, "world"];

// Array methods typed आहेत
scores.push(88);    // ✅
scores.push("A");   // ❌ ERROR

// Inline object type
let student: { name: string; age: number; isPremium: boolean } = {
  name: "Avadhoot",
  age: 22,
  isPremium: true,
};

// Optional property (? लावा)
let user: { name: string; email?: string } = {
  name: "Rahul",
  // email नसलं तरी चालतं
};

// Tuple: specific positions ला specific types
let coordinate: [number, number] = [18.5, 73.8]; // [lat, lng]

let userInfo: [string, number, boolean] = ["Avadhoot", 22, true];

// Destructuring
const [lat, lng] = coordinate;

// Named tuples (readability साठी)
let point: [x: number, y: number] = [10, 20];