jsstrn

/*

time: O(log n)
space: O(1)

*/

function binarySearch(value, array) {
  let start = 0
  let end = array.length

jsstrn

/*

time: O(m + n)
space: O(n) // whichever is smaller

arr1 = [ 1, 2, 3, 5, 6, 7 ]
                        ^ 
arr2 = [ 3, 6, 7, 8, 20 ]
               ^
arr3 = [ 3, 6, 7 ]

jsstrn

function hasDuplicateValue(array) {
  let counter = 0
  for (let i = 0; i < array.length; i++) {
    for (let j = 0; j < array.length; j++) {
      counter++
      if (i !== j && array[i] === array[j]) {
        return true
      }
    }
  }

jsstrn

🌐 Lab: How the web works

IP Address

We've learned that each device connected to a network is assigned an IP address. This includes your mobile phones and computers, and if you have a toaster that's hooked up to the Internet then your toaster, too.

What's the IP address of your computer?

Use ipconfig from your Terminal

jsstrn

class Payment {
  constructor() {
    this.paymentMethod = ''
  }
  
  setPaymentMethod(paymentMethod) {
    this.paymentMethod = paymentMethod
  }
  
  pay(amount) {

jsstrn

{
"11111" : "a",
"11112" : "a&p",
"11113" : "a's",
"11114" : "aa",
"11115" : "aaa",
"11116" : "aaaa",
"11121" : "aaron",
"11122" : "ab",
"11123" : "aba",

jsstrn

open -a safari https://youtu.be/X2W3aG8uizA
osascript -e 'set volume output volume 100'

jsstrn

Object Calisthenics

9 steps to better software design today, by Jeff Bay

• http://www.xpteam.com/jeff/writings/objectcalisthenics.rtf
• http://www.pragprog.com/titles/twa/thoughtworks-anthology

We’ve all seen poorly written code that’s hard to understand, test, and maintain. Object-oriented programming promised to save us from our old procedural code, allowing us to write software incrementally, reusing as we go along. But sometimes it seems like we’re just chasing down the

jsstrn

### Keybase proof

I hereby claim:

  * I am jsstrn on github.
  * I am jsstrn (https://keybase.io/jsstrn) on keybase.
  * I have a public key ASCG6WnBjTnsIlYCuk0PoUmbXEOhnBREUXI5DBNYj1pdKwo

To claim this, I am signing this object:

jsstrn

export const Square = () => {
  const   createLength = (length) => {
    return 'x'.repeat(length)
  }

  const createHeight = (length) => {
    return 'x' + ' '.repeat(length - 2) + 'x'
  }

  const createArray = (length) => {