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Frontend Development

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De-'Async Inject' Universal Analytics

This gist applies the theory from Ilya Grigorik's Script-injected "async scripts" considered harmful on the default Universal Analytics snippet. TLDR place this above the CSS in the <head> of your document

<!-- Google Analytics Part 1: Creates window.ga, sets account, and queues pageview-->
<script>
  !function(n,t){n.GoogleAnalyticsObject=t,n[t]=n[t]||function(){(n[t].q=n[t].q||[]).push(arguments)},n[t].l=1*new Date}(window,"ga");
  ga('create', 'UA-XXXX-Y', 'auto'); // REPLACE UA-XXXX-Y w/ YOUR ACCOUNT
 ga('send', 'pageview');

These instructions set up a way to publish tweets to Twitter's OAuth2 API from a Ruby on Rails app.

Set up a twitter account via the Twitter account setup instructions here: https://github.com/jkotchoff/twitter_oauth2#twitter-account-setup
Add the twitter_oauth2 gem and something to issue HTTP requests (like Typhoeus) to your Gemfile:

gem 'twitter_oauth2'
gem 'typhoeus'

	# To check if this is up-to-date with the tax rates go to
	# http://www.expatax.nl/tax-rates-2016.php and see if there's anything
	# newer there.
	#
	# I make no guarantees that any of this is correct. I calculated this
	# at the time and have been updating it when new tax rates come along
	# because people keep finding this useful.
	#
	# There's also an interactive JS version of this created by
	# @stevermeister at

	def msort[T](xs: List[T])(implicit ord: Ordering[T]): List[T] = {
	val n = xs.length / 2
	if (n == 0) xs
	else {
	def merge(xs: List[T], ys: List[T]) : List[T] = {
	(xs, ys) match {
	case (Nil, ys) => ys
	case (xs, Nil) => xs
	case (x :: xs1, y :: ys1) => {
	if (ord.lt(x, y)) x :: merge(xs1, ys)

	// C++11 lambdas aren't terribly useful at producing art.
	// Source below is valid C++11. VS2013 takes about a minute at it (Release config),
	// reaches almost 4GB of memory usage and then gives a
	//
	// 1>ConsoleApplication1.cpp(34): fatal error C1001: An internal error has occurred in the compiler.
	// 1> (compiler file 'msc1.cpp', line 1325)
	// 1> To work around this problem, try simplifying or changing the program near the locations listed above.
	// 1> Please choose the Technical Support command on the Visual C++
	// 1> Help menu, or open the Technical Support help file for more information
	// 1> This error occurred in injected text:

	---
	include:
	- ".solargraph_definitions.rb"
	- "app/*/.rb"
	- "config/*/.rb"
	- "lib/*/.rb"
	exclude:
	- test/*/
	- vendor/*/
	- ".bundle/*/"

	# Okasaki style Functional Red Black Tree
	# https://www.cs.tufts.edu/comp/150FP/archive/chris-okasaki/redblack99.pdf
	#
	# leaves and root are black
	# BST
	# No red node has a red child
	# Every path from the root to a leaf has the same number of black nodes

	module RBTree
	class Leaf

	module Clsx
	def clsx(*args)
	process_args = args.map do \|arg\|
	if arg.is_a?(Array)
	clsx(*arg)
	elsif arg.is_a?(Hash)
	arg.map do \|key, value\|
	key if value
	end
	else

	# frozen_string_literal: true

	module Fingerprinting
	def full_fingerprint
	generate_fingerprint(
	ip_fingerprint,
	browser_fingerprint
	)
	end