Matt Lewis mplewis

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written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.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.

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	require 'openssl'
	require 'Base64'

	key = "secret-key"
	data = "some data to be signed"
	Base64.encode64(OpenSSL::HMAC.digest(OpenSSL::Digest::Digest.new('sha256'), key, data)).strip()

	.factory('TokenHandler', function() {
	var tokenHandler = {};
	var token = "none";

	tokenHandler.set = function( newToken ) {
	token = newToken;
	};

	tokenHandler.get = function() {
	return token;

	# http://stackoverflow.com/a/10031877

	import numpy
	import cairo
	import math

	from gi.repository import Gtk,Gdk

	data = numpy.zeros((200, 200, 4), dtype=numpy.uint8)
	surface = cairo.ImageSurface.create_for_data(

	#!/usr/bin/env python

	# Written by Limor "Ladyada" Fried for Adafruit Industries, (c) 2015
	# This code is released into the public domain

	import time
	import os
	import RPi.GPIO as GPIO

	GPIO.setmode(GPIO.BCM)

	# Outputs this at warn log level:
	# 1.2.3.4 GET /path 200 OK BlahController#action HTML 938.2 (DB 11.8, View 719.7) {params} {optional params from flash[:log]}
	#
	# Save as config/initializers/oneline_detailed_logging.rb. Consider
	# decreasing the log level from "info" to "warn" (in production.rb) so
	# the one-line log message replaces the standard request logs.


	# override process_action to add 2 things to the payload:
	# - remote IP

	#
	# Uncrustify Configuration File
	# File Created With UncrustifyX 0.2 (140)
	#

	# Alignment
	# ---------

	## Alignment

	PROGRAM := llvm-brainfuck
	OBJECTS := main.o

	SHIM := shim.a
	SHIM_OBJECTS := shim.o

	CC := clang
	CXX := clang++
	CXXFLAGS := $(shell llvm-config --cppflags) -Wall -Werror -pedantic
	LDFLAGS := $(shell llvm-config --ldflags --libs core)

	#!/usr/bin/env ruby
	#
	# Proof-of-Concept exploit for Rails Remote Code Execution (CVE-2013-0156)
	#
	# ## Advisory
	#
	# https://groups.google.com/forum/#!topic/rubyonrails-security/61bkgvnSGTQ/discussion
	#
	# ## Caveats
	#