Dixie DixieKorley

study guides

✨ yangshun/tech-interview-handbook: 💯 Technical and non-technical guide for rocking your coding interview.
🔥 coding-interview-university (jwasham): A complete computer science study plan to become a software engineer. (super comprehensive)
every-programmer-should-know (mr-mig): A collection of (mostly) technical things every software developer should know
system-design-primer(donnemartin): Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Start With This

Before getting to React, it's helpful to know what this does generally in Javascript. Take the following snippet of code. It's written in ES6 but the principles for this predate ES6.

class Dog {
  constructor() {

Cheat Sheet: Simple Authentication in Rails 6 with `has_secure_password`

The goal of this cheatsheet is to make it easy to add hand-rolled authentication to any rails app in a series of layers.

First the simplest/core layers, then optional layers depending on which features/functionality you want.

`Specs`
AUTHOR	Ira Herman
LANGUAGE/STACK	Ruby on Rails Version 4, 5, or 6

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Ruby on Rails Cheatsheet

Architecture

Create a new application

Install the Rails gem if you haven't done so before

	[
	{
	"name": "Afghanistan",
	"code": "AF"
	},
	{
	"name": "Åland Islands",
	"code": "AX"
	},
	{

	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Measure Me</title>
	<link rel="stylesheet" href="style.css">
	</head>

	<body class="main">

	<div>

	"""
	A program that prints out the numbers 1 to 100 (inclusive).
	If the number is divisible by 3, print Crackle instead of the number.
	If it's divisible by 5, print Pop.
	If it's divisible by both 3 and 5, print CracklePop.
	"""
	for number in range(1, 101):
	if number % 15 == 0:
	print ("CracklePop")
	continue

	/**
	* Basic example to pass values between parent and child components in React
	* Seems to be in line with this
	* http://stackoverflow.com/questions/24147331/react-the-right-way-to-pass-form-element-state-to-sibling-parent-elements
	* Now I have the state in parent and child. Is that good or bad? Why would I need it in child?
	* Could probably take that out
	* */
	class Parent extends React.Component {
	constructor(props) {
	super(props);