valentingavela

############################
# USE TYPE AS KEY OF OBJECT#
############################
type DayOfTheWeek = "sunday" | "monday" | "tuesday" | "wednesday" | "thursday" | "friday" | "saturday";

type ChoresMap = { [day in DayOfTheWeek]: string };

const chores: ChoresMap = { // ERROR! Property 'saturday' is missing in type '...'
    "sunday": "do the dishes",
    "monday": "walk the dog",

valentingavela

/*
DISCLAIMER: this snippet is just for educational purposes. Use at your own risk.
Instructions:
-Step 1: Get a Pluralsight account.
-Step 2: Start the first video of a course.
-Step 3: paste the following code in the console.
Your videos will be downloaded in your current downloads folder.
*/

var video = document.querySelector('video');

valentingavela

Find whole lines not match with word
^((?!playerUrl).)*$

Find whole lines match with work 
^.*\b(one|two|three)\b.*$

Find newline
([\n])

Match alphanumeric case insensitive

valentingavela

Online Course Codesmith
  https://csx.codesmith.io
  https://www.youtube.com/channel/UCAU_6P-M2VHKePIpu5736ag

Great page
  https://jstherightway.org/#the-good-parts

Weird parts of JS
  http://bonsaiden.github.io/JavaScript-Garden/

valentingavela

const ascending = prices.sort((a, b) => a - b);
const descending = prices.sort((a, b) => a + b);

valentingavela

function swap(arr, index1, index2) {
    if (index1 === index2) throw Error;
    [arr[index1], arr[index2]] = [arr[index2], arr[index1]];
    return arr;
}

valentingavela

function isInt(n){
    return Number(n) === n && n % 1 === 0;
}

function isFloat(n){
    return Number(n) === n && n % 1 !== 0;
}

valentingavela

function* arrayLooper(arr = []) {
  let i = 0;
  while (1) {
    i = i === arr.length ? 0 : i;
    yield arr[i];
    i++;
  }
}

valentingavela

function arrayTo2DArray2(list, howMany) {
  var idx = 0
  result = []

  while (idx < list.length) {
    if (idx % howMany === 0) result.push([])
    result[result.length - 1].push(list[idx++])
  }

  return result

valentingavela

// Convert int to string:
// | OR operator 
console.log('20' | 0);