Karel Minarik karmi

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end

WARNING

This gist is outdated! For the most up-to-date information, please see http://emberjs.com/guides/routing/!

It All Starts With Templates

An Ember application starts with its main template. Put your header, footer, and any other decorative content in application.handlebars.

<header>

My issues with Modules

In researching topics for RailsCasts I often read code in Rails and other gems. This is a great exercise to do. Not only will you pick up some coding tips, but it can help you better understand what makes code readable.

A common practice to organize code in gems is to divide it into modules. When this is done extensively I find it becomes very difficult to read. Before I explain further, a quick detour on instance_eval.

You can find instance_eval used in many DSLs: from routes to state machines. Here's an example from Thinking Sphinx.

class Article &lt; ActiveRecord::Base

Stackoverflow to Elasticsearch

This script will load any stackoverflow site from the XML dump (retrievable at https://archive.org/details/stackexchange via torrent) into Elasticsearch.

To use just call:

python load_stack.py PATH

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aac --with-opus

	.DS_Store
	Gemfile.lock
	*.pem
	node.json
	tmp/*
	!tmp/.gitignore

	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

	/*
	* sanitize HTML with jQuery based on whitelist
	* example:
	* sanitizer.sanitize('<a href="foo" class="bar">aaa</a><script>alert("...")</script>', {'a': ['href'], 'strong': []})
	* returns '<a href="foo">aaa</a>'
	*/
	var sanitizer = {};

	(function($) {
	function trimAttributes(node, allowedAttrs) {

	.vagrant
	Gemfile.lock
	Berksfile.lock
	tmp/