Laurian Gridinoc Laurian

G-WAN is a new free web server. They seem to be very proud of it, or at least just want to make a lot of money. Well anyway, in almost every sentence they write, they claim that they are 20% cooler than anything else. It feels a bit arrogant. I have to admit, I don't know a lot about web servers, so I can't speak to how good they are.

However, then I saw their Captcha example. I also don't know much about machine learning algorithms, OCR, and stuff like that, but I do know how to read pixels. I also know how to compare values with python :P

They say the following about their Captcha:

	#!/usr/bin/env python

	""" Video stabilization with OpenCV (>=2.3) and Hugin

	Adrien Gaidon
	INRIA - 2012

	TODO: add cropping, clean-up and improve doc-strings
	"""

	function fitProjection(projection, data, box, center) {
	// get the bounding box for the data - might be more efficient approaches
	var left = Infinity,
	bottom = -Infinity,
	right = -Infinity,
	top = Infinity;
	// reset projection
	projection
	.scale(1)
	.translate([0, 0]);

	// Lefalet shortcuts for common tile providers - is it worth adding such 1.5kb to Leaflet core?

	L.TileLayer.Common = L.TileLayer.extend({
	initialize: function (options) {
	L.TileLayer.prototype.initialize.call(this, this.url, options);
	}
	});

	(function () {

	// Includes functions for exporting active sheet or all sheets as JSON object (also Python object syntax compatible).
	// Tweak the makePrettyJSON_ function to customize what kind of JSON to export.

	var FORMAT_ONELINE = 'One-line';
	var FORMAT_MULTILINE = 'Multi-line';
	var FORMAT_PRETTY = 'Pretty';

	var LANGUAGE_JS = 'JavaScript';
	var LANGUAGE_PYTHON = 'Python';

	#!/bin/sh -e

	#git-cache-meta -- simple file meta data caching and applying.
	#Simpler than etckeeper, metastore, setgitperms, etc.
	#from http://www.kerneltrap.org/mailarchive/git/2009/1/9/4654694
	#modified by n1k
	# - save all files metadata not only from other users
	# - save numeric uid and gid

	# 2012-03-05 - added filetime, andris9

	/*
	* Inspired by: http://stackoverflow.com/questions/4360060/video-streaming-with-html-5-via-node-js
	*/

	var http = require('http'),
	fs = require('fs'),
	util = require('util');

	http.createServer(function (req, res) {
	var path = 'video.mp4';

	#!/usr/bin/env ruby -w

	# pnginator.rb: pack a .js file into a PNG image with an HTML payload;
	# when saved with an .html extension and opened in a browser, the HTML extracts and executes
	# the javascript.

	# Usage: ruby pnginator.rb input.js output.png.html

	# By Gasman <http://matt.west.co.tt/>
	# from an original idea by Daeken: http://daeken.com/superpacking-js-demos

	var el = $('div.button');

	// is this bad? I'd think so:
	el.addClass('closed').css('border', 'none').attr('x', 5);

	// first method call in line, subsequent below indented?
	el.addClass('closed')
	.css('border', 'none');

	// context switching adds indentation? (like in d3)

	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