stephanschubert’s gists

stephanschubert / euler25.rb

Created February 24, 2010 10:54

Solution for Euler #25 in Ruby w/ memoization

	# http://projecteuler.net/index.php?section=problems&id=25

	# There are memoization libs, but i had it at my
	# fingertips anyway ..
	def memoize(name)
	cache = {}
	(class << self; self; end).send(:define_method, name) do \|*args\|
	cache[args] = super(*args) unless cache.has_key?(args)
	cache[args]
	end

stephanschubert / faster-float2int.js

Created March 19, 2010 10:22

	function t(f) { var x = (new Date()).getTime(); f.call(); return (new Date()).getTime() - x; }

	t(function() { for(i = 0; i < 1000000; ++i) { Math.ceil(i); } });
	// 1081

	t(function() { for(i = 0; i < 1000000; ++i) { ~~i; } });
	// 772

stephanschubert / deferred_google_analytics.html

Created April 9, 2010 10:57

jQuery version of deferred Google Analytics. See http://neil.fraser.name/news/2010/04/07/ for more details.

	<script type="text/javascript">
	(function($) {
	$("body").load(function() {
	setTimeout(function() {
	var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
	ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
	var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
	}, 1);
	});
	})(jQuery);

stephanschubert / cache_helper.rb

Created May 2, 2010 13:17

Rails Helper Module: Encodes the asset's timestamp into the request URL as directory which will be removed by Apache's mod_rewrite

	module CacheHelper
	#
	# Implements Google's "Leverage Proxy Caching" tip:
	# Instead of using a query parameter as cache buster -
	# encode it into the URL to ensure public proxies can
	# cache it too.
	#
	# NOTE: Activates in production mode only because it's
	# not necessary for development and needs a mod_rewrite
	# rule for Apache anyway:

stephanschubert / minmax.js

Created March 28, 2011 15:54

Simple but elegant solution for creating Array#min/max in JavaScript

	Array.max = function(array){
	return Math.max.apply(Math, array);
	};

	Array.min = function(array){
	return Math.min.apply(Math, array);
	};

stephanschubert / spork_mongoid_devise_reload_fix.rb

Created April 10, 2011 18:43

Fix the reloading issue when using Spork with Mongoid and/or Devise

	Spork.each_run do
	# This code will be run each time you run your specs.
	load "#{Rails.root}/config/routes.rb"
	Dir["#{Rails.root}/app/*/.rb"].each { \|f\| load f }
	end

stephanschubert / cross-browser-background-rgba.scss

Created April 18, 2011 05:44

SCSS mixin for cross-browser background-color: rgba(...). You'll need the Ruby extension for convenient color conversion rgba->hex (IE uses ARGB)

	@mixin background-rgba($r,$g,$b,$a) {
	// To mimic this in Internet Explorer, you can use the proprietary filter
	// property to create a gradient with the same start and end color, along
	// with an alpha transparency value.

	@if experimental-support-for-microsoft {
	$color: ie_hex($r,$g,$b,$a);
	$value: unquote("progid:DXImageTransform.Microsoft.gradient(GradientType=0,startColorstr=##{$color},endColorstr=##{$color})");

	background-color: transparent\9;

stephanschubert / optimized_google_plusone.js

Created June 7, 2011 17:48

Optimized Google PlusOne Javascript - Asynchronous/Non-Blocking, Minimal + SSL Fix

	<!-- Place this tag just before your close body tag and NOT in your <head> -->
	<script>
	(function(d, t) {
	var g = d.createElement(t),
	s = d.getElementsByTagName(t)[0];
	g.async = true;
	g.src = 'https://apis.google.com/js/plusone.js';
	s.parentNode.insertBefore(g, s);
	})(document, 'script');
	</script>

stephanschubert / fb-extract-comments.php

Created June 15, 2011 21:09

Extract comments from your page on Facebook

	<?php

	// displays some comments for a certain url
	$url = 'http://developers.facebook.com/docs/reference/fql/comment/';

	// fql multiquery to fetch all the data we need to display in one go
	$queries = array('q1' => 'select post_fbid, fromid, object_id, text, time from comment where object_id in (select comments_fbid from link_stat where url ="'.$url.'")',
	'q2' => 'select post_fbid, fromid, object_id, text, time from comment where object_id in (select post_fbid from #q1)',
	'q3' => 'select name, id, url, pic_square from profile where id in (select fromid from #q1) or id in (select fromid from #q2)',
	);

stephanschubert / ssh-reagent

Created September 19, 2011 11:45

Stick this in your shell configuration (e.g. ~/.bashrc or ~/.zshrc) and run ssh-reagent whenever you have an agent session running and a terminal that can't see it.

	ssh-reagent () {
	for agent in /tmp/ssh-/agent.; do
	export SSH_AUTH_SOCK=$agent
	if ssh-add -l 2>&1 > /dev/null; then
	echo Found working SSH Agent:
	ssh-add -l
	return
	fi
	done
	echo Cannot find ssh agent - maybe you should reconnect and forward it?

Stephan Schubert stephanschubert