Mohnish Thallavajhula mohnish

http://github.com/Agent-H/tunesquared

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.

Element

Box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
elem.getClientRects(), elem.getBoundingClientRect()

Virtual DOM and diffing algorithm

There was a [great article][1] about how react implements it's virtual DOM. There are some really interesting ideas in there but they are deeply buried in the implementation of the React framework.

However, it's possible to implement just the virtual DOM and diff algorithm on it's own as a set of independent modules.

Linux Backup Solutions

I've been looking for the best Linux backup system, and also reading lots of HN comments.

Instead of putting pros and cons of every backup system I'll just list some deal-breakers which would disqualify them.

Also I would like that you, the HN community, would add more deal breakers for these or other backup systems if you know some more and at the same time, if you have data to disprove some of the deal-breakers listed here (benchmarks, info about something being true for older releases but is fixed on newer releases), please share it so that I can edit this list accordingly.

Amanda (comments by sammcj)

It has a lot of management overhead and that's a problem if you don't have time for a full time backup administrator.

	require 'active_record'

	# Temporary switch to blank rake app, extract required tasks and import them to
	# current rake task. Skip seed loader here, as we do not need it for tests.
	# More info on AR tasks import: @see https://gist.github.com/drogus/6087979

	def import_active_record_tasks(default_rake_app)
	Rake.application = Rake::Application.new
	Rake.application.rake_require('active_record/railties/databases')

	(function ($) {

	/**
	* @function
	* @property {object} jQuery plugin which runs handler function once specified element is inserted into the DOM
	* @param {function} handler A function to execute at the time when the element is inserted
	* @param {bool} shouldRunHandlerOnce Optional: if true, handler is unbound after its first invocation
	* @example $(selector).waitUntilExists(function);
	*/

	.nav-tab {
	...
	// instead of putting it on
	border-right: 1px solid #424242;
	&:last-child {
	border-right: 0; // and then taking it off
	}
	// use CSS not() to only apply to the elements you want
	&:not(:last-child) {
	border-right: 1px solid #424242;

	// Node.js CheatSheet.
	// Download the Node.js source code or a pre-built installer for your platform, and start developing today.
	// Download: http://nodejs.org/download/
	// More: http://nodejs.org/api/all.html


	// 0. Synopsis.
	// http://nodejs.org/api/synopsis.html

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	var externalObj = {key: 'value'};

	var items = {
	obj: {
	'string prop': 'string val',
	5: 10,
	nested: [[3, [5, 2]]],
	'function': function(){return true;},
	reference: externalObj
	},