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const dev = process.env.NODE_ENV !== 'production' // Loads the environment that you're running on
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');

module.exports = {
  mode:'development',
  devtool: dev ? 'inline-source-map': 'eval-source-map', // Maps the line numbers of jsx files to the ones in the bundle
  entry: path.join( __dirname, 'client/src/index.jsx'),
  module: { // All modules to be used in the app

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Installing Cassandra on Mac OS X

Install Homebrew

Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

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Define a tray as a collection with length of 30
Define the eggs

Iterate over the tray
  Check if there's any empty space
  If spaces exist
    Fill up the empty tray spaces with an egg
  If full
    Inform farmer that tray is full
    Create another tray

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This is a fork of original gist https://gist.github.com/nrollr/3f57fc15ded7dddddcc4e82fe137b58e, with slight changes on pointing to 5.7 version branch, instead of 8 (latest default of MySQL in Hombrew).

Install MySQL 5.7 on macOS

This procedure explains how to install MySQL using Homebrew on macOS (Sierra 10.12 and up)

Install Homebrew

• Installing Homebrew is effortless, open Terminal and enter :
  $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• Note: Homebrew will download and install Command Line Tools for Xcode 8.0 as part of the installation process.

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Docker Commands, Help & Tips

Show commands & management commands

$ docker

Docker version info

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// Webpack configuration for react to work with all browsers

const path = require("path"); // node's path module 
const htmlWebpackPlugin = require("html-webpack-plugin"); // creates your html with all jsx bundled to es5

module.exports = {
  entry: "./index.js",
  output: { // path to the bundle
    path: path.join(__dirname, "/bundle"),
    filename: "bundle.js",

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# put this in your .bash_profile
if [ $ITERM_SESSION_ID ]; then
  export PROMPT_COMMAND='echo -ne "\033];${PWD##*/}\007"; ':"$PROMPT_COMMAND";
fi

# Piece-by-Piece Explanation:
# the if condition makes sure we only screw with $PROMPT_COMMAND if we're in an iTerm environment
# iTerm happens to give each session a unique $ITERM_SESSION_ID we can use, $ITERM_PROFILE is an option too
# the $PROMPT_COMMAND environment variable is executed every time a command is run
# see: ss64.com/bash/syntax-prompt.html

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var addEventSystem = function(target){
    // Stores all the events. Keys -> event names, Values -> array of
    // all callbacks for the events
    target.reactionsTo = {};
    target.on = function(event, callback){
        // the event will act as the keys to the system
        this.reactionsTo[event] = this.reactionsTo[event] || []
        this.reactionsTo[event].push(callback);
    }
    // Trigger all the callbacks based on the event being passed

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var gVariable = "foo";
gVariable == window.gVariable; //returns true

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var HashTable = function() {
  this._storage = [];
  this._count = 0;
  this._limit = 8;
}


HashTable.prototype.insert = function(key, value) {
  //create an index for our storage location by passing it through our hashing function
  var index = this.hashFunc(key, this._limit);