firien

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

Gource

Gource is a software version control visualization tool.

Software projects are displayed by Gource as an animated tree with the root directory of the project at its centre. Directories appear as branches with files as leaves. Developers can be seen working on the tree at the times they contributed to the project.

http://code.google.com/p/gource/

Installing Gource Manually (w/out MacPorts or Homebrew)

	require 'cgi'
	require 'active_support'

	def verify_and_decrypt_session_cookie(cookie, secret_key_base = Rails.application.secret_key_base)
	config = Rails.application.config
	cookie = CGI::unescape(cookie)
	salt = config.action_dispatch.authenticated_encrypted_cookie_salt
	encrypted_cookie_cipher = config.action_dispatch.encrypted_cookie_cipher \|\| 'aes-256-gcm'
	# serializer = ActiveSupport::MessageEncryptor::NullSerializer # use this line if you don't know your serializer
	serializer = ActionDispatch::Cookies::JsonSerializer

	require 'cgi'
	require 'active_support'

	def verify_and_decrypt_session_cookie(cookie, secret_key_base = Rails.application.secret_key_base)
	cookie = CGI::unescape(cookie)
	salt = 'authenticated encrypted cookie'
	encrypted_cookie_cipher = 'aes-256-gcm'
	serializer = ActiveSupport::MessageEncryptor::NullSerializer

	key_generator = ActiveSupport::KeyGenerator.new(secret_key_base, iterations: 1000)

	// SPDX-License-Identifier: MPL-2.0

	// AES Encryption/Decryption with AES-256-GCM using random Initialization Vector + Salt
	// ----------------------------------------------------------------------------------------
	// the encrypted datablock is base64 encoded for easy data exchange.
	// if you have the option to store data binary save consider to remove the encoding to reduce storage size
	// ----------------------------------------------------------------------------------------
	// format of encrypted data - used by this example. not an official format
	//
	// +--------------------+-----------------------+----------------+----------------+

	# decode_session_cookie.rb
	# ------------------------
	# The purpose of this script is to show that if I have the secret_key_base
	# and a cookie to an active Rails session, I can decrypt it and gain access
	# to key information about the user's session.

	require 'rubygems'
	require 'cgi'
	require 'active_support'
	require 'json'

	# Credit http://stackoverflow.com/a/2514279
	for branch in `git branch -r \| grep -v HEAD`;do echo -e `git show --format="%ci %cr" $branch \| head -n 1` \\t$branch; done \| sort -r