https://www.youtube.com/watch?v=Ux4g3E2VkIo

array-methods.js

// .filter(Boolean)
// .fitler to unique values

const fruit = ['Apple', 'Banana', 'Apple', 'Orange']
console.log(Array.from(new Set(fruit)))

const unique = (element, index, fullArray) => fullArray.indexOf(element) === index
console.log(fruit.filter(unique))

/*
const prod = false
const fruit = [
    'Apple', 'Banana', 'Orange',
    'Pear', 'Peach',
    prod ? 'Grape' : null
].filter(Boolean)

console.log(fruit)



/*
console.log(
  fruit.reduce((acc, element) => {
    return `${acc}${element}`
  })
)


const pOnlyFruitCapReduce = fruit.reduce((acc, element) => {
  if (element.startsWith('P')) {
    acc.push(element.toUpperCase())
  }
  return acc
}, [])

console.log(pOnlyFruitCapReduce)

const pOnlyFruitCapArray = fruit
  .filter(element => element.startsWith('P'))
  .map(element => element.toUpperCase())

console.log(pOnlyFruitCapArray)

let pOnlyFruitCap = []
for (let index = 0; index < fruit.length; index++) {
  const element = fruit[index]
  if (element.startsWith('P')) {
    pOnlyFruitCap[pOnlyFruitCap.length] = element.toUpperCase()
  }
}
console.log(pOnlyFruitCap)

/*
let pOnlyFruitWithFilter = fruit.filter(element => element.startsWith('P'))
console.log(pOnlyFruitWithFilter)

let pOnlyFruit = []
for (let index = 0; index < fruit.length; index++) {
  const element = fruit[index];
  if (element.startsWith('P')) {
    pOnlyFruit[pOnlyFruit.length] = element
  }
}
console.log(pOnlyFruit)
*/

/*
const allCapsFruitWithMap = fruit.map(element => {
  return element.toUpperCase()
})

console.log(allCapsFruitWithMap)

let allCapsFruit = []
for (let index = 0; index < fruit.length; index++) {
  const element = fruit[index];
  allCapsFruit[index] = element.toUpperCase()
}
console.log(allCapsFruit)
console.log(fruit)
*/

/*
fruit.forEach(element => {
  console.log(element)
})


for (let index = 0; index < fruit.length; index++) {
  const element = fruit[index];
  console.log(element)
}

*/

// console.log(fruit.reverse())

// console.log(fruit)

// let newFruit = []
// for (let index = fruit.length - 1; index >= 0; index--) {
//   newFruit[newFruit.length] = fruit[index];
// }
// for (let index = 0; index < newFruit.length; index++) {
//   fruit[index] = newFruit[index];
// }

// console.log(fruit)

/*
const obj = {name: 'bob'}
const fruit = ['Apple', obj, 'Banana', 'Apple', 'Orange']
console.log(fruit.lastIndexOf('Apple'))

let lastIndexOfApple
for (let index = fruit.length - 1; index >= 0; index--) {
  const element = fruit[index];
  if (element === 'Apple') {
    lastIndexOfApple = index
    break;
  }
}
console.log(lastIndexOfApple)

console.log(fruit)













console.log(fruit.slice(-2))


console.log(fruit.fill(3, 2, 5))



















console.log(
  Array.from({length: 2}, (v, i) => i)
)


console.log(Array.of(8,3))
console.log(Array.from({'0': 'hi', length: 1}))
*/