Zeke Sikelianos zeke

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:

The standard code style linter is a great tool by Feross - check it out!

Remove trailing semicolons:

find . -path ./node_modules -prune -o -type f -name '*.js' -exec sed -i '' -e 's/;$//' {} \;

Ensure space between function and opening bracket:

What zoom level is equivalent to a given altitude? In other words, if I’m looking at a map at ZL n, how high off the ground would I be to make out the same features?

This is from a question from Eric Fischer; my algebra and arithmetic are extremely rusty, so please check everything! Major assumptions:

We’re at the equator.
We’re looking straight down (which you can’t realistically do out a plane window, for example).
We have 20/20 vision (which is not as good as median corrected vision).

Add Heroku to your Gemfile and bundle install.
Create your Heroku app. This will only work with their (currently-beta) 'cedar' stack, so you have to heroku create --stack=cedar.
Create a Procfile for your bot. This tells Heroku how to run your worker. In our case, the bot is bot.rb, so the only line in the Procfile is cinch: bundle exec ./bot.rb
Commit and push to Heroku.
You do not want a Web worker running, so heroku scale web=0 cinch=1. This also sets up your deployments to restart the bot.

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

	(function() {
	function hashchange() {
	if (!location.hash) {
	return;
	}
	// Don't do anything if the current target exists.
	if (document.querySelector(":target")) {
	return;
	}
	var name = "user-content-" + decodeURIComponent(location.hash.slice(1));

	/**package
	{"name":"just-a-gist-package-nbd-whatevs","version":"1.2.3",
	"description":"showoff",
	"repository":"https://gist.github.com/2e776d98951973c8b857.git"}
	**/
	module.exports = "just a gist pkg nbd whatevs"

	npm () {
	if [ "$1" = "publish" ]; then
	dependency-check . && $(which npm) "$@"
	else
	$(which npm) "$@"
	fi
	}

	$gutter: 10px;
	$grid-unit: 60px;

	%clearfix {
	*zoom: 1;
	&:after {
	content: "\0020";
	display: block;
	height: 0;
	clear: both;

	((d, s, id) ->
	js = undefined
	fjs = d.getElementsByTagName(s)[0]
	return if d.getElementById(id)
	js = d.createElement(s)
	js.id = id
	js.src = "//connect.facebook.net/en_US/all.js#xfbml=1"
	fjs.parentNode.insertBefore js, fjs
	) document, "script", "facebook-jssdk"