Cacher is the code snippet organizer for pro developers

// Rest
function average(a, b, ...args) {
  return args.reduce((acc, i) => acc += i, 0) / args.length
}
// console.log(average(10, 20, 30, 40, 50))

// Spread
// const array = [1, 2, 3, 5, 8, 13]
// console.log(...array)
// console.log(Math.max(...array))
// console.log(Math.min(...array))
// console.log(Math.max.apply(null, array))

// const fib = [1, ...array]
// console.log(fib)

// Destructuring
const array = [1, undefined, 3, 5, 8, 13]

// const a = array[0]
// const b = array[1]
// const [a, b = 42, ...c] = array
// console.log(a, b, c)

// const [a,, c] = array
// console.log(a, c)

// Object
const address = {
  country: 'Russia',
  city: 'Moskow',
  // street: 'Lenina',
  concat: function() {
    return `${this.country}, ${this.city}, ${this.street}`
  }
}

// const {city, country, street = 'Tverskaya', concat: addressConcat} = address
//
// console.log(addressConcat.call(address))
// console.log(street)

const {city, ...rest} = address
console.log(city)
console.log(rest)


const newAddress = {...address, street: 'Tverskaya', code: 123}

console.log(newAddress)

// console.log(address.concat())