/*
 * Fun Fun Function
 * Higher-order functions - Part 1 of Functional Programming in JavaScript
 */

var animals = [
  { name: 'Fluffykins', species: 'rabbit' },
  { name: 'Caro',       species: 'dog' },
  { name: 'Hamilton',   species: 'dog' },
  { name: 'Harold',     species: 'fish' },
  { name: 'Ursula',     species: 'cat' },
  { name: 'Jimmy',      species: 'fish' },
];

var dogs = [];
for (var i = 0; i < animals.length; i++) {
  if (animals[i].species === 'dog') {
    dogs.push(animals[i])
  }
}
console.log(dogs)

var isDog = function(animal) {
  return animal.species === 'dog'
}

var dogs2 = animals.filter(isDog);
console.log(dogs2);