CoryKelly

import "./styles.css";

// Memorize this function! Be able to transform an array of objects into
// a normalized object based on a key. Looking up an item in an array is a O(n)
// operation if you don't know the item's index. If you know a value on the
// item, and that value is unique, you can create an index based on that value
// to enable you to do O(1) look ups
const indexArrayBy = key => array => {
  return array.reduce((acc, cur) => {
    acc[cur[key]] = cur;

CoryKelly

if ( $('#haven').length > 0 ) {
	// do stuff here
} else {
	console.log( 'wtf, why??' );
}

CoryKelly

## Oh shit, I did something terribly wrong, please tell me git has a magic time machine!?!

`git reflog`
### you will see a list of every thing you've done in git, across all branches! 
### Each one has an index HEAD@{index} find the one before you broke everything.

`git reset HEAD@{index}`
### magic time machine`

## Oh shit, I committed and immediately realized I need to make one small change!

CoryKelly

//Path Variable 
<?php $imgBasePath = "//cdn.4patriots.com/img"; ?>


//UseCase
<img src="//cdn.4patriots.com/img/food/prepared/beef-broccoli-rice-legacy.jpg" alt="Protein Kit Beef">

CoryKelly

a * (b + c)         // grouping
person.age          // member
person[age]         // member
!(a == b)           // logical not
a != b              // not equal
typeof a            // type (number, object, function...)
x << 2  x >> 3      // minary shifting
a = b               // assignment
a == b              // equals
a != b              // unequal

CoryKelly

* all elements
div all div tags
div,p all divs and paragraphs
div p paragraphs inside divs
div > p all p tags, one level deep in div
div + p p tags immediately after div
div ~ p p tags preceded by div
.classname all elements with class
#idname element with ID
div.classname divs with certain classname

CoryKelly

Force HTTPS
RewriteEngine on
RewriteCond %{HTTPS} !on
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

Force www
RewriteEngine on
RewriteCond %{HTTP_HOST} ^htmlg\.com [NC]
RewriteRule ^(.*)$ http://www.htmlg.com/$1 [L,R=301,NC]

CoryKelly

RegEx
/regex/g  global - matches all

 .  is a wildcard
 \  escape 
" "  space is a character
\t  Tabs
\r. \n, \r\n  new line
\u  unicode