jooeycheng

# === Program

class Main
  def compare(n1, n2)
    (n1 + n2).to_i > (n2 + n1).to_i
  end

  def special_sort(arr)
    result = []
    temp = []

jooeycheng

# === Program v1 [time complexity: O(n^2)]

class Main

  def equilibrium_index(arr)
    result = []

    arr.each_with_index do |el, i|
      j = 0
      sum_prefix = 0

jooeycheng

# === [Lesson 2: Arrays] - CyclicRotation
# === Program v1 (recursive)

def solution(a, k)
  return a if k == 0 || a.length == 0
  a = a.unshift(a.delete_at(a.length - 1))
  k -= 1
  return solution(a, k)
end

jooeycheng

# custom bash, copied from Vagabond box
bind 'set completion-ignore-case on'
GIT_PS1_SHOWDIRTYSTATE=1 # displays * or +
GIT_PS1_SHOWSTASHSTATE=1 # displays $
GIT_PS1_SHOWUNTRACKEDFILES=1 # displays %
GIT_PS1_SHOWUPSTREAM='auto' # displays <, >, <> or =
GIT_PS1_SHOWCOLORHINTS=1
GIT_PS1_DESCRIBE_STYLE='contains'
RESET="\[\033[0m\]"
GRAY="\[\033[38;5;248m\]"

jooeycheng

git status
git diff                        // diff working_dir vs last_commit

git log
git log --graph                 // visualize graph topology in terminal
gitk                            // visualize graph topology in gitk (GUI)

git add .                       // stage new & modified files, without deleted
git add -u                      // stage modified & deleted files, without new

jooeycheng

-- Adapted from:
-- https://gist.github.com/eric-hu/5846890
-- 
-- Modified to work with files as well, cd-ing to their container folder
on run {input, parameters}
  tell application "Finder"
		set my_file to first item of input
		set filetype to (kind of (info for my_file))
		-- Treats OS X applications as files.  To treat them as folders, integrate this SO answer:
		-- http://stackoverflow.com/a/6881524/640517

jooeycheng

var express = require('express')
var app = express()
var request = require('request')
app.use(require('body-parser').json())
var endpoints = require('./endpoints.json')
var response = require('./response.json')

app.all("*", function(req, res) {
  endpoints.forEach(function(ept) {
    full_url = ept + req.url

jooeycheng

# https://github.com/localtunnel/localtunnel/issues/81#issuecomment-218320442
# usage: ruby localtunnel.rb --port 3000 --subdomain yourdomainhere

require 'optparse'

options = { subdomain: 'defaultdomain', port: 3000 }

parser = OptionParser.new do |opts|
  opts.banner = 'Usage: localtunnel.rb [options]'
  opts.on('-s', '--subdomain subdomain', 'Subdomain') do |subdomain|

jooeycheng

• File sharing - https://send.firefox.com/
• Video conferencing - https://meet.jitsi.net/

jooeycheng

/**
 * Sample Component file for reference, because Joey forgets simple stuff.
 */
import React from 'react';

import './Sample.scss';

class Sample extends React.Component {
  constructor(props) {
    super(props);