alainravet

module DefaultValues

  def has_default_values(default_values = {})

    cattr_accessor :default_values
    self.default_values = default_values

    after_initialize :assign_default_values

    include InstanceMethods

markmeeus

module Celluloid
  class Thread < ::Thread

    def []= key, value
      if key_on_thread? key
        thread_vars[key] = value      
      else
        super
      end
    end

rdp

def required(arg=nil)
  method = caller_locations(1,1)[0].label
  raise ArgumentError.new("required parameter #{arg.to_sym.inspect + ' ' if arg}not passed to method #{method}")
end

def say(greeting: required('greeting'))
  puts greeting
end

def say2(greeting: required)

sstephenson

Simple file/stream encryption using OpenSSL

Create and store a 512-byte random encryption key named secret:

$ mkkey secret

Encrypt the contents of file with the secret key and write it to file.enc:

$ encrypt secret < file > file.enc

alainravet

module BinaryFileStringUtils
 def byte_to_int
   self.unpack('U').first
 end

 def little_endian_to_int
   # source : http://stackoverflow.com/questions/5236059/unpack-signed-little-endian-in-ruby
   arr, bits, num = self.unpack('V*'), 0, 0
   arr.each do |int|
     num += int << bits

michaelfairley

Immutable Ruby

Libraries I talked about

• ice_nine: Deep freeze ruby objects
• Values: Simple immutable value objects for ruby
• immutable_attributes: specify attributes within an ActiveRecord model that can be set but not modified
• hamster: Efficient, Immutable, Thread-Safe Collection classes for Ruby

Next Steps

concerning.rb

class Module
  # We often find ourselves with a medium-sized chunk of behavior that we'd
  # like to extract, but only mix in to a single class.
  #
  # We typically choose to leave the implementation directly in the class,
  # perhaps with a comment, because the mental and visual overhead of defining
  # a module, making it a Concern, and including it is just too great.
  #
  #
  # Using comments as lightweight modularity:

clarkware

#!/usr/bin/env ruby

# API Documentation at http://api.wikia.com/wiki/LyricWiki_API

require 'open-uri'
require 'json'
require 'tmpdir'

ARTIST = "Johnny Cash"

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

JEG2

require "rest_client"
require "twitter"

URL     = "http://www.oge.com/residential-customers/products-and-services/" +
          "Positive-Energy-Smart-Grid/Pages/PriceSignal.aspx"
DATE_RE = Time.now.strftime("%A,\\s+%B\\s+%d,\\s+%Y")

unless ARGV.size == 4
  abort "USAGE:  #{$PROGRAM_NAME} CONSUMER_KEY CONSUMER_SECRET " +
                                 "OAUTH_TOKEN OAUTH_TOKEN_SECRET"