youfoundron

While a lot of Node.js guides recommend using JWT as an alternative to session cookies (sometimes even mistakenly calling it "more secure than cookies"), this is a terrible idea. JWTs are absolutely not a secure way to deal with user authentication/sessions, and this article goes into more detail about that.

Secure user authentication requires the use of session cookies.

Cookies are small key/value pairs that are usually sent by a server, and stored on the client (often a browser). The client then sends this key/value pair back with every request, in a HTTP header. This way, unique clients can be identified between requests, and client-side settings can be stored and used by the server.

Session cookies are cookies containing a unique session ID that is generated by the server. This session ID is used by the server to identify the client whenever it makes a request, and to associate session data with that request.

*S

youfoundron

Stop using JWTs!

TLDR: JWTs should not be used for keeping your user logged in. They are not designed for this purpose, they are not secure, and there is a much better tool which is designed for it: regular cookie sessions.

If you've got a bit of time to watch a presentation on it, I highly recommend this talk: https://www.youtube.com/watch?v=pYeekwv3vC4 (Note that other topics are largely skimmed over, such as CSRF protection. You should learn about other topics from other sources. Also note that "valid" usecases for JWTs at the end of the video can also be easily handled by other, better, and more secure tools. Specifically, PASETO.)

A related topic: Don't use localStorage (or sessionStorage) for authentication credentials, including JWT tokens: https://www.rdegges.com/2018/please-stop-using-local-storage/

The reason to avoid JWTs comes down to a couple different points:

• The JWT specification is specifically designed only for very short-live tokens (~5 minute or less). Sessions

youfoundron

// Tailwind colors for Flexoki theme by Steph Ango. https://stephango.com/flexoki

const colors = {
  base: {
    black: '#100F0F',
    950: '#1C1B1A',
    900: '#282726',
    850: '#343331',
    800: '#403E3C',
    700: '#575653',

youfoundron

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

youfoundron

class BoggleBoard
    def initialize(board)       # takes nested array and sets it to board attribute
        @board = board
    end
    
    def create_word(*coords)    # takes multiple arrays (representing individual coordinates), return string of the joined elements at the given coordinates 
        coords.map { |coord| @board[coord.first][coord.last]}.join("")  # splat operator '*' let's the method take multiple paramaters as an array 
    end
    
    def get_letter(row, col)    # takes index of row, index of column; returns letter at coordinate