Kenny Meyer kennym

Channels Are Not Enough

... or Why Pipelining Is Not That Easy

Golang Concurrency Patterns for brave and smart.

Intro

DigitalOcean Ubuntu 14.04 x64 + Rails 4 + Nginx + Unicorn + PostgreSQL + Capistrano 3

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SSH into Root

$ ssh [email protected]

Change Root Password

In the default React Native app scaffolding you have to edit AppDelegate.m to change where it loads the code if you want to test on your device. I use the following snippet to detect if it's being compiled for Debug or Production and for the Simulator or a device. For Production it uses a copy of the code included in the bundle, for Debug on the simualtor it loads from a server on localhost and for Debug on a device it loads from a server on a given IP address.

NOTE: You need to edit YOUR-IP-HERE and change it to the IP to load the code from when in Debug mode on a device. You could use a service like ngrok to make this work from anywhere.

  NSURL *jsCodeLocation;

  // Loading JavaScript code
  #if DEBUG
    // For Debug build load from development server. Start the server from the repository root:

	FIXME:
	WARNING: Nokogiri was built against LibXML version 2.7.3, but has dynamically loaded 2.7.8
	or
	ERROR -: Incompatible library version: nokogiri.bundle requires version 11.0.0 or later, but libxml2.2.dylib provides version 10.0.0


	gem uninstall nokogiri libxml-ruby

	brew update
	brew uninstall libxml2

	" copy all this into a vim buffer, save it, then...
	" source the file by typing :so %
	" Now the vim buffer acts like a specialized application for mastering vim

	" There are two queues, Study and Known. Depending how confident you feel
	" about the item you are currently learning, you can move it down several
	" positions, all the way to the end of the Study queue, or to the Known
	" queue.

	" type ,, (that's comma comma)

	import socket
	from BaseHTTPServer import HTTPServer
	from SimpleHTTPServer import SimpleHTTPRequestHandler

	class MyHandler(SimpleHTTPRequestHandler):
	def do_GET(self):
	if self.path == '/ip':
	self.send_response(200)
	self.send_header('Content-type', 'text/html')
	self.end_headers()

	#!/usr/bin/python

	# Quick and dirty demonstration of CVE-2014-0160 by Jared Stafford ([email protected])
	# The author disclaims copyright to this source code.
	#
	# Modified slightly by Andreas Thienemann <[email protected]> for clearer exploit code
	# and 64k reads
	#
	# This version of the exploit does write received data to a file called "dump" in the local directory
	# for analysis.

	Rake::Task["assets:precompile"].clear
	namespace :assets do
	task 'precompile' do
	puts "Not pre-compiling assets..."
	end
	end

	var wrapURLs = function (text, new_window) {
	var url_pattern = /(?:(?:https?\|ftp):\/\/)?(?:\S+(?::\S)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]\|2\d\|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?\|1\d\d\|2[01]\d\|22[0-3])(?:\.(?:1?\d{1,2}\|2[0-4]\d\|25[0-5])){2}(?:\.(?:[1-9]\d?\|1\d\d\|2[0-4]\d\|25[0-4]))\|(?:(?:[a-z\x{00a1}\-\x{ffff}0-9]+-?)[a-z\x{00a1}\-\x{ffff}0-9]+)(?:\.(?:[a-z\x{00a1}\-\x{ffff}0-9]+-?)[a-z\x{00a1}\-\x{ffff}0-9]+)(?:\.(?:[a-z\x{00a1}\-\x{ffff}]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?/ig;
	var target = (new_window === true \|\| new_window == null) ? '_blank' : '';

	return text.replace(url_pattern, function (url) {
	var protocol_pattern = /^(?:(?:https?\|ftp):\/\/)/i;
	var href = protocol_pattern.test(url) ? url : 'http://' + url;
	return '<a href="' + href + '" target="' + target + '">' + url + '</a>';
	});
	};