map-intro.js

const dogs = [
  {name: 'Snookums', needsShots: true, breed: 'pug', age: 2},
  {name: 'Thor', needsShots: true, breed: 'hound', age: 1},
  {name: 'Wunderbar', needsShots: false, breed: 'pug', age: 9},
]

// We are going to create a new array of our vet approved dogs!
const vetApprovedDogs = dogs.myMap((dog) => {

  // The vet makes his approval
  dog.needsShots = false
  
  // What ever gets returned ends up at the same index
  // in the new array. 
  return dog
})

console.log(vetApprovedDogs) // everyone has their shots!