gem install rails
rails new my_app -T
# 1) Create your private key (any password will do, we remove it below) | |
$ cd ~/.ssh | |
$ openssl genrsa -des3 -out server.orig.key 2048 | |
# 2) Remove the password | |
$ openssl rsa -in server.orig.key -out server.key |
-- Related blog post to this Gist: | |
-- https://torsten.io/stdout/expanding-json-arrays-to-rows | |
-- Run these commands on a interactive RedShift session: | |
CREATE TEMP TABLE clusters AS ( | |
SELECT 1 AS id, '[1, 2]' AS node_sizes UNION ALL | |
SELECT 2 AS id, '[5, 1, 3]' AS node_sizes UNION ALL | |
SELECT 3 AS id, '[2]' AS node_sizes | |
); |
module Spree | |
class Calculator::Bogo < Calculator | |
preference :number_to_buy, :integer, :default => 1 | |
preference :number_to_get, :integer, :default => 1 | |
def self.description | |
"Buy One Get One" | |
end | |
def compute(order) |
class Lisp | |
def initialize | |
@env = { | |
:label => lambda { |(name,val), _| @env[name] = val }, | |
:quote => lambda { |sexpr, _| sexpr[0] }, | |
:car => lambda { |(list), _| list[0] }, | |
:cdr => lambda { |(list), _| list.drop 1 }, | |
:cons => lambda { |(e,cell), _| [e] + cell }, | |
:eq => lambda { |(l,r), _| l == r }, | |
:if => lambda { |(cond, thn, els), ctx| eval(cond, ctx) ? eval(thn, ctx) : eval(els, ctx) }, |
<html> | |
<head> | |
<script src='http://code.jquery.com/jquery-1.5.1.min.js'></script> | |
</head> | |
<body> | |
<h2>Naive canvas</h2> | |
<canvas id="naive" width="400" height="50"></canvas> | |
<h2>High-def Canvas</h2> |
############################################################################# | |
# Class: Vash (Ruby Volatile Hash) | |
# Hash that returns values only for a short time. This is useful as a cache | |
# where I/O is involved. The primary goal of this object is to reduce I/O | |
# access and due to the nature of I/O being slower then memory, you should also | |
# see a gain in quicker response times. | |
# | |
# For example, if Person.first found the first person from the database & cache | |
# was an instance of Vash then the following would only contact the database for | |
# the first iteration: |
#!/usr/bin/env ruby | |
# A quick and dirty implementation of an HTTP proxy server in Ruby | |
# because I did not want to install anything. | |
# | |
# Copyright (C) 2009-2014 Torsten Becker <[email protected]> | |
# | |
# Permission is hereby granted, free of charge, to any person obtaining | |
# a copy of this software and associated documentation files (the | |
# "Software"), to deal in the Software without restriction, including | |
# without limitation the rights to use, copy, modify, merge, publish, |