var pets = [
    {name:"rover",animal:"dog",amount:27},
    {name:"freddy",animal:"turtle",amount:27},
    {name:"deefor",animal:"dog",amount:27},
    {name:"sir barkalot",animal:"dog",amount:27},
    {name:"cedric",animal:"snake",amount:27}
]

// var dogs = pets.filter(function(pets) {
//     return pets.animal == "dog"
// })
const dogs = pets.filter((e) => e.animal === "dog")


// var names = pets.map(function(p) { return p.name});
const names = pets.map((p) => p.name);

// var total = pets.reduce(function(sum,pet) {
//     console.log("inside reduce : ", sum, pet)
//     return sum + pet.amount
// },0)
const total = pets.reduce((sum ,pet) => sum + pet.amount, 0)

console.log(total);
console.log(dogs);
console.log(names);