// use static methods as utility functions that are not tied to a specific instance of a class

// obligatory animal example
class Dog {
  constructor(breed) {
    this.breed = breed;
  }

  speak() {
    return `I am a ${this.breed} dog. Woof!`;
  }

  static compareBreeds(dog1, dog2) {
    return (dog1.breed === dog2.breed);
  }

}

let bigDog = new Dog("Great Dane");
let anotherBigDog = new Dog("Great Dane");
let smallDog = new Dog("Chihuahua");

console.log(Dog.compareBreeds(bigDog, smallDog)); // false
console.log(Dog.compareBreeds(bigDog, anotherBigDog));
console.log(bigDog.speak());
console.log(smallDog.speak());
// What will happen when you uncomment the line below?
//console.log(bigDog.compareBreeds(bigDog, smallDog));