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Khang Hoang khanghoang

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@khanghoang
khanghoang / node-deploy-as-upstart-service.md
Last active August 29, 2015 14:27 — forked from learncodeacademy/node-deploy-as-upstart-service.md
Deploy Node.js app on Ubuntu as Upstart Service - instead of using Forever

Deploying a node app with Forever is great...until your server restarts unexpectedly. Then your app stops running and you have to re-deploy.

To get around this, we're going to run our node app as an Upstart service. Upstart services are great, because, once started, the system auto-restarts them if they fail, or if the server restarts.

###Step 1: Create a service for your node app

  • ssh in as root ssh root@youripaddress
  • Create a node-app.conf file in /etc/init
    IMPORTANT: whatever filename you pick is what you will use to start|stop|restart your service i.e. service node-app start
@khanghoang
khanghoang / remove-rubber-band-web-apps-ios
Last active August 29, 2015 14:27 — forked from amolk/remove-rubber-band-web-apps-ios
Remove rubberband scrolling from web apps on mobile safari (iOS)
<!DOCTYPE html>
<html>
<head>
<title>Remove rubberband scrolling from web apps on mobile safari (iOS)</title>
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-touch-fullscreen" content="yes">
<meta id="extViewportMeta" name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
<style>
html, body {margin: 0; padding: 0; overflow: hidden}
@khanghoang
khanghoang / deployUser.md
Last active August 29, 2015 14:27 — forked from learncodeacademy/deployUser.md
Adding a deploy user in Linux

(wherever it says url.com, use your server's domain or IP)

Login to new server as root, then add a deploy user

sudo useradd --create-home -s /bin/bash deploy
sudo adduser deploy sudo
sudo passwd deploy

And Update the new password

@khanghoang
khanghoang / multer-to-s3.js
Created October 22, 2015 10:58 — forked from adon-at-work/multer-to-s3.js
Sample File Upload From Multer to S3
var AWS = require('aws-sdk'),
fs = require('fs');
// http://docs.aws.amazon.com/AWSJavaScriptSDK/guide/node-configuring.html#Credentials_from_Disk
AWS.config.loadFromPath('./aws-config.json');
// assume you already have the S3 Bucket created, and it is called ierg4210-shopxx-photos
var photoBucket = new AWS.S3({params: {Bucket: 'ierg4210-shopxx-photos'}});
function uploadToS3(file, destFileName, callback) {
@khanghoang
khanghoang / protips.js
Created November 1, 2015 11:25 — forked from nolanlawson/protips.js
Promise protips - stuff I wish I had known when I started with Promises
// Promise.all is good for executing many promises at once
Promise.all([
promise1,
promise2
]);
// Promise.resolve is good for wrapping synchronous code
Promise.resolve().then(function () {
if (somethingIsNotRight()) {
throw new Error("I will be rejected asynchronously!");
@khanghoang
khanghoang / kangax-es6-quiz-explained.md
Created November 8, 2015 15:20 — forked from DmitrySoshnikov/kangax-es6-quiz-explained.md
@kangax's ES6 quiz, explained

@kangax's ES6 quiz, explained

@kangax created a new interesting quiz, this time devoted to ES6 (aka ES2015). I found this quiz very interesting and quite hard (made myself 3 mistakes on first pass).

Here we go with the explanations:

Question 1:
(function(x, f = () =&gt; x) {
@khanghoang
khanghoang / redis_pubsub_demo.rb
Created November 9, 2015 17:30 — forked from pietern/redis_pubsub_demo.rb
# Author: Pieter Noordhuis
# Description: Simple demo to showcase Redis PubSub with EventMachine
#
# Update 7 Oct 2010:
# - This example does *not* appear to work with Chrome >=6.0. Apparently,
# the WebSocket protocol implementation in the cramp gem does not work
# well with Chrome's (newer) WebSocket implementation.
#
# Requirements:
# - rubygems: eventmachine, thin, cramp, sinatra, yajl-ruby
@khanghoang
khanghoang / gist:33f002128da7f1a2fcf2
Created November 26, 2015 11:58 — forked from saetia/gist:1623487
Clean Install – OS X 10.11 El Capitan

OS X Preferences

most of these require logout/restart to take effect

# Enable character repeat on keydown
defaults write -g ApplePressAndHoldEnabled -bool false

# Set a shorter Delay until key repeat
@khanghoang
khanghoang / Enum.es6.js
Created December 18, 2015 09:39 — forked from xmlking/Enum.es6.js
JavaScript Enums with ES6, Type Checking and Immutability
export class EnumSymbol {
sym = Symbol.for(name);
value: number;
description: string;
constructor(name: string, {value, description}) {
if(!Object.is(value, undefined)) this.value = value;
if(description) this.description = description;
@khanghoang
khanghoang / slim-redux.js
Last active March 7, 2021 13:58 — forked from gaearon/slim-redux.js
Redux without the sanity checks in a single file. Don't use this, use normal Redux. :-)
function mapValues(obj, fn) {
return Object.keys(obj).reduce((result, key) => {
// call fn() and re-assign it to results.
result[key] = fn(obj[key], key);
return result;
}, {});
}
function pick(obj, fn) {
return Object.keys(obj).reduce((result, key) => {