aderyabin

#########################################
# Very basic rack application showing how to use a router based on the uri
# and how to process requests based on the HTTP method used.
#
# Usage:
# $ rackup rack_example.ru
#
# $ curl -X POST -d 'title=retire&body=I should retire in a nice island' localhost:9292/ideas
# $ curl -X POST -d 'title=ask Satish for a gift&body=Find a way to get Satish to send me a gift' localhost:9292/ideas
# $ curl localhost:9292/ideas

aderyabin

a = tag(:b)
 => "<b />" 
rubinius-2.0.0dev :015 > a.html_safe?
 => true 
rubinius-2.0.0dev :016 > a.dup.html_safe?
 => nil 

aderyabin

Role.count
   (0.5ms)  SELECT COUNT(*) FROM "roles" 
 => 0 
1.8.7 :037 > Role.last
  Role Load (0.5ms)  SELECT "roles".* FROM "roles" ORDER BY "roles"."id" DESC LIMIT 1
 => nil 
1.8.7 :038 > Role.create!(:name => 'php_committer')
   (0.2ms)  BEGIN
  Role Exists (0.4ms)  SELECT 1 FROM "roles" WHERE "roles"."name" = 'php_committer' LIMIT 1
  SQL (0.7ms)  INSERT INTO "roles" ("created_at", "description", "name", "title", "updated_at") VALUES ($1, $2, $3, $4, $5) RETURNING "id"  [["created_at", Fri, 01 Jun 2012 01:15:04 MSK +04:00], ["description", nil], ["name", "php_committer"], ["title", nil], ["updated_at", Fri, 01 Jun 2012 01:15:04 MSK +04:00]]

aderyabin

mysql: SHOW TABLES
postgresql: \d
postgresql: SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';

mysql: SHOW DATABASES
postgresql: \l
postgresql: SELECT datname FROM pg_database;

mysql: SHOW COLUMNS
postgresql: \d table

aderyabin

sudo apt-get update && sudo apt-get upgrade
sudo apt-get install build-essential
sudo mount /dev/cdrom /media/cdrom
cd /media/cdrom && sudo sh ./VBoxLinuxAdditions.run

aderyabin

mv ~/Library/Application\ Support/Skype ~/Dropbox/
ln -s ~/Dropbox/Skype ~/Library/Application\ Support/Skype

aderyabin

# encoding: utf-8

# needs to be installed 7za, pgdbf
namespace :kladr do
  PATH = 'tmp/kladr'

  def import_options(database=nil)
    host = ActiveRecord::Base.configurations[Rails.env]['host']
    user = ActiveRecord::Base.configurations[Rails.env]['username']
    host &&= "--host=#{host}"

aderyabin

puts <<-SNOWMAN
                         ________
   *                    [________]     .     *
*               .       |________| /       .          *
                        |        |/
             *           =========
    *                  ______________
  *            ||||||  /            \\
               ||> || (    0   0     )          .
     .         ||-  | |      O      |

aderyabin

<?php

/*
 * Podcast URL Extractor
 * implemented at http://itunes.so-nik.com
 *
 * All code has been re-written by lasavior. 
 * Original code & inspiration from Michael Sitarzewski, zerologic.com
 *
 * Ex: http://ax.phobos.apple.com.edgesuite.net/WebObjects/MZStore.woa/wa/viewPodcast?id=269238657

aderyabin

# current
class AddAuthorIdToBooksTable < ActiveRecord::Migration
  def change
    add_column :books, :author_id, :integer
    add_index :books, :author_id
  end
end

# thought
class AddAuthorIdToBooksTable < ActiveRecord::Migration