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// When you set a function parameter to `(arg = val)` that sets the default
//  for the argument. It is not a forced assignment.
//
// Example:

function postSomething(name = 'Megan') {
  console.log('name:', name);
}

postSomething(); // console logs 'name: Megan'

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const { useState } = React;

function signupUser() {
  return new Promise(resolve => {
    setTimeout(resolve, 1000);
  });
}

const initialState = {
  username: "",

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Error Message Scenarios

• There is an unknown column in the file
• There is a missing required column in the file
• There is missing data in the file
• The file is not a properly formatted csv file

There is an unknown column in the file

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Create HTML Web App

• az webapp up --location westeurope --name parcel-test-2

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Set custom subdomain

• command: ngrok http -subdomain=inconshreveable 5000
• result: http://inconshreveable.ngrok.io on port 5000

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Update Node with NVM and move global packages

• nvm install node --reinstall-packages-from=node or nvmup
• npm update -g or npmgup
• npm list -g --depth 0 or npmgout

Aliases

alias nor="npm outdated"

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rails new myapp --database=postgresql

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import Vue from 'vue'
import Vuex from 'vuex'
import firebase from 'firebase'
import router from '@/router'

Vue.use(Vuex)

export const store = new Vuex.Store({
  state: {
    appTitle: 'My Awesome App',

wrburgess

import Vue from 'vue'
import Vuex from 'vuex'
import firebase from 'firebase'
import router from '@/router'

Vue.use(Vuex)

export const store = new Vuex.Store({
  state: {
    appTitle: 'My Awesome App',

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How to reset PG Database on Heroku?

• Step 1: heroku restart
• Step 2: heroku pg:reset DATABASE (no need to change the DATABASE)
• Step 3: heroku run rake db:migrate
• Step 4: heroku run rake db:seed (if you have seed)

One liner

heroku restart; heroku pg:reset DATABASE --confirm APP-NAME; heroku run rake db:migrate