Jonathan Pettersson jpettersson

HearSay

The HearSay P2P File Sharer; a response to The Copyright Alert System, as well as several other internet regulation attempts. The goal of this project is to prove the viability of semi-anonymous and confidential file sharing. Consists of several proofs of concepts such as the formation of ad-hoc mix networks and routing throughout them while maintaining anonymity and semantic security.

However, lets be honest with ourselves for a second. Don't use this to fight an oppressive regime. I can not (and will not try) to 'prove' its security, and I

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

	# -- mode: ruby --
	# vi: set ft=ruby :

	VAGRANTFILE_API_VERSION = "2"

	Vagrant.configure(VAGRANTFILE_API_VERSION) do \|config\|
	# Every Vagrant virtual environment requires a box to build off of.
	config.vm.box = "precise64"

	# The url from where the 'config.vm.box' box will be fetched if it

	Copyright 2012 Jason Davies https://www.jasondavies.com

	Permission to use, copy, modify, and/or distribute this software for any
	purpose with or without fee is hereby granted, provided that the above
	copyright notice and this permission notice appear in all copies.

	THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
	REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
	FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
	INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM

	$stack, $draws = [], {}

	def method_missing *args
	return if args[0][/^to_/]
	$stack << args.map { \|a\| a or $stack.pop }
	$draws[$stack.pop(2)[0][0]] = args[1] if args[0] == :<
	end

	class Array
	def +@

	"use strict";

	// `f` is assumed to sporadically fail with `TemporaryNetworkError` instances.
	// If one of those happens, we want to retry until it doesn't.
	// If `f` fails with something else, then we should re-throw: we don't know how to handle that, and it's a
	// sign something went wrong. Since `f` is a good promise-returning function, it only ever fulfills or rejects;
	// it has no synchronous behavior (e.g. throwing).
	function dontGiveUp(f) {
	return f().then(
	undefined, // pass through success

	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
	<title>One Graph</title>
	<script type="text/javascript" src="http://mbostock.github.com/d3/d3.v2.js"></script>
	<script type="text/javascript" src="simple-graph.js"></script>
	<style type="text/css">
	body { font: 13px sans-serif; }
	rect { fill: #fff; }

	/**********************************************/
	/*
	/* IR_Black Skin by Ben Truyman - 2011
	/*
	/* Based on Todd Werth's IR_Black:
	/* http://blog.toddwerth.com/entries/2
	/*
	/* Inspired by Darcy Clarke's blog post:
	/* http://darcyclarke.me/design/skin-your-chrome-inspector/
	/*