class-06(code sample)

// const arr = [1, 2, 3,[3, [5, 6]], 6, 7]

// console.log(arr[3][1][0] + arr[3][1][1])

// function sum(arr){
//   let sum = 0
//   const nestedArr = arr[3][1]

//   for(let num of nestedArr){
//     sum += num
//   }
//   return sum
// }

// console.log(sum(arr))

//nested object access
// const obj = {
//   a: 1,
//   b: 2,
//   c: {
//     d: 1,
//     e: 2,
//     f: {
//       g() {
//         return 1
//       }
//     }
//   }
// }

// console.log(obj.c.f.g())

//first class function(criteria)

//can be assigned as variable value, passed as an arguments, returned from function

// const func1 = function (myFunc) {
//   return myFunc() + 1
// }

// const func2 = function(){
//   return 2
// }
// console.log(func1(func2))

// function sum(number1) {
//   return function(number2){
//     return number1 + number2
//   }
// }
// console.log(sum(4)(3))

// console.log(sum(3)(4))

//default parameter

// function multiply(num1 = 10, num2 = 50, num3 = 7) {
//   console.log(num1, num2, num3)
//   console.log(num1 * num2 * num3)
// }

// multiply(20, null, 5)


// const num1 = 10
// function printNum (num){
//   // console.log(num)
//   return num
// }
// // printNum(num1)
// console.log(printNum(num1))


//array destructuring
// const myArr = [1, 2, 3]

// const num1 = myArr[0]
// const num2 = myArr[1]

//destructuring
// const [num1,,num3] = myArr

// console.log(num1, num3)

//object destructuring

// const myObj = {
//   a: 1,
//   b: 2,
//   c: [3, 4]
// }


// const val1 = myObj.a
// const val2 = myObj.b
// const val3 = myObj.c.d

// const {b: val2, a: val1, c: [ran1, ran2]} = myObj

// console.log(val2, val1, ran1, ran2)

// console.log(val1, val2, val3)

//array spreading and rest
const myArr = [1, 2, 3]
//spread
const newArr = [...myArr, 4]

//rest
const  [num1, ...restValues] = newArr

console.log(num1, restValues)



const myObj = {
  a: 1,
  b: 2,
  c: [3, 4]
}




//spread
const newObj = {
  ...myObj,
  d: 5
}
console.log(newObj)

//rest
const {a, ...rest} = newObj

console.log(a, rest)




//1.data naming issue
//2. order issue

function getProfileInfo({age, firstName, lastName}){
  console.log(`${firstName} ${lastName}-${age}`)
}

//special case
function getProfileInfo(...profile) {
  console.log(profile)
  console.log(`${profile[0].firstName} ${profile[0].lastName} - ${profile[0].age }`)
  // console.log(`${firstName} ${lastName}-${age}`)
}

getProfileInfo({
  firstName: 'samim',
  lastName:  'Hasan',
  age: 28
})