Antonios Karamitros AntouanK

ZeroMQ vs Redis

This document is research for the selection of a communication platform for robot-net.

Goal

The purpose of this component is to enable rapid, reliable, and elegant communication between the various nodes of the network, including controllers, sensors, and actuators (robot drivers). It will act as the core of robot-net to create a standardized infrastructure for robot control.

Requirements:

Work in progress, I'll write this up properly when I'm done.

Almost all credit goes to @maxogden for putting me on to this and pointing me in the right direction for each of these items.

Prerequisites:

Raspberry Pi
Kindle Paperwhite freed from its locked down state (jailbroken) http://www.mobileread.com/forums/showthread.php?t=198446
- You have to downgrade your Kindle to 5.3.1 to install the current jailbreak; that's just a matter of getting the old version image, putting it on your Kindle via USB and telling it to install "upgrade". Then you put in the Jailbreak files, load the ebook and break.
Your kindle will be quick to detect an upgrade is available so it'll want to upgrade soon afterwards but the jailbreak will last but you have to reinstall the developer certificates so it's a bit of a pain but doable. Find all the instructions on the mobileread.com forums and wiki.

First, get in the private beta to get your domain(s) whitelisted.

Install the client:

apt-get install git
git clone https://github.com/letsencrypt/letsencrypt
cd letsencrypt

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.

Element

Box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
elem.getClientRects(), elem.getBoundingClientRect()

	abril-fatface
	ada
	after-time
	alert
	andthen
	anglicize
	ansi-codes
	atbash
	attr
	attrs

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	# Docker PS prettifier
	# revision 6
	# https://gist.github.com/GottZ/4a6c2af314d73cd8b71d

	dps() {
	docker ps $@ --format "table{{ .Image }}\\t{{ .Names }}\\t{{ .Status }}\\t{{ .Ports }}" \| awk '
	NR % 2 == 0 {
	printf "\033[0m";
	}
	NR % 2 == 1 {

	root@beryllium:~# wget http://cachefly.cachefly.net/100mb.test
	converted 'http://cachefly.cachefly.net/100mb.test' (ANSI_X3.4-1968) -> 'http://cachefly.cachefly.net/100mb.test' (UTF-8)
	--2015-09-03 11:28:49-- http://cachefly.cachefly.net/100mb.test
	Resolving cachefly.cachefly.net (cachefly.cachefly.net)... 62.210.187.96
	Connecting to cachefly.cachefly.net (cachefly.cachefly.net)\|62.210.187.96\|:80... connected.
	HTTP request sent, awaiting response... 200 OK
	Length: 104857600 (100M) [application/octet-stream]
	Saving to: '100mb.test'

	100mb.test 100%[==========================================================================================================================================>] 100.00M 50.1MB/s in 2.0s

	// UPD:
	// Now available as npm module!
	// Check out https://github.com/RReverser/better-log for details.

	console.log = (function (log, inspect) {
	return function () {
	return log.apply(this, Array.prototype.map.call(arguments, function (arg) {
	return inspect(arg, { depth: 1, colors: true });
	}));
	};

	var active = false;

	function changeRefer(details) {
	if (!active) return;

	for (var i = 0; i < details.requestHeaders.length; ++i) {
	if (details.requestHeaders[i].name === 'Referer') {
	details.requestHeaders[i].value = 'http://www.google.com/';
	break;
	}