Guillermo Esteves gesteves

1. Get You a Hug, Every Friday

2. Run From a Single File

The Smallest Rails App http://thesmallestrailsapp.com

%w(action_controller/railtie coderay).each &method(:require)

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

	# These are my notes from the PragProg book on CoffeeScript of things that either
	# aren't in the main CS language reference or I didn't pick them up there. I wrote
	# them down before I forgot, and put it here for others but mainly as a reference for
	# myself.

	# assign arguments in constructor to properties of the same name:
	class Thingie
	constructor: (@name, @url) ->

	# is the same as:

	Dear soon-to-be-former user,

	We've got some fantastic news! Well, it's great news for us anyway. You, on
	the other hand, are fucked.

	We've just been acquired by:

	[ ] Facebook
	[ ] Google
	[ ] Twitter

	# First, install all of the things

	apt-get update
	apt-get install nginx
	/etc/init.d/nginx start
	apt-get install python-dev
	apt-get install python-pip
	apt-get install libjpeg-dev libpng-dev libtiff-dev libjasper-dev libgtk2.0-dev python-numpy python-pycurl libwebp-dev python-opencv libjpeg-progs
	ln -s /usr/lib/x86_64-linux-gnu/libjpeg.so /usr/lib
	pip install pillow