Agatha Uy agathauy

1. Clone your fork:

git clone [email protected]:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

Converting a Word Document to Markdown in Two Moves

The Problem

A lot of important government documents are created and saved in Microsoft Word (*.docx). But Microsoft Word is a proprietary format, and it's not really useful for presenting documents on the web. So, I wanted to find a way to convert a .docx file into markdown.

The Solution

As it turns out, there are several open-source tools that allow for conversion between file types. Pandoc is one of them, and it's powerful. In fact, pandoc's website says "If you need to convert files from one markup format into another, pandoc is your swiss-army knife." But, although pandoc can convert from markdown into .docx, it doesn't work in the other direction.

	#!/bin/bash

	# from
	# http://bergamini.org/computers/creating-favicon.ico-icon-files-with-imagemagick-convert.html

	convert source-WxW.png -resize 256x256 -transparent white favicon-256.png
	convert favicon-256.png -resize 16x16 favicon-16.png
	convert favicon-256.png -resize 32x32 favicon-32.png
	convert favicon-256.png -resize 64x64 favicon-64.png
	convert favicon-256.png -resize 128x128 favicon-128.png

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	// set-up a connection between the client and the server
	var socket = io.connect();

	// let's assume that the client page, once rendered, knows what room it wants to join
	var room = "abc123";

	socket.on('connect', function() {
	// Connected, let's sign-up for to receive messages for this room
	socket.emit('room', room);
	});

	<html>
	<body>

	<!-- really dirty! this is just a test drive ;) -->

	<script type="text/javascript" src="https://raw.github.com/mozilla/pdf.js/gh-pages/build/pdf.js"></script>
	<script type="text/javascript">
	function renderPDF(url, canvasContainer, options) {

	var options = options \|\| { scale: 1 };

	"""
	Simply display the contents of the webcam with optional mirroring using OpenCV
	via the new Pythonic cv2 interface. Press <esc> to quit.
	"""

	import cv2


	def show_webcam(mirror=False):
	cam = cv2.VideoCapture(0)

	#!/usr/bin/env python

	from PySide.QtCore import *
	from PySide.QtGui import *
	import cv2
	import sys

	class MainApp(QWidget):

	def __init__(self):

	// Inspired by http://bulkan-evcimen.com/using_sequelize_migrations_with_an_existing_database
	var Promise = require('bluebird');
	var fs = Promise.promisifyAll(require('fs'));

	module.exports = {
	up: function(migration, DataTypes, done) {
	var db = migration.migrator.sequelize;
	fs.readFileAsync(__dirname + '/initial.sql', {encoding: 'utf8'})
	.then(function(initialSchema) {
	var tables = initialSchema.split(';');