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record = User.new(username: 'ryan', email: '[email protected]')

record.class.arel_table.create_insert.tap do |im|
  im.insert(record.send(:arel_attributes_with_values_for_create, record.attribute_names)) 
end.to_sql

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installing postgresql 9.3.2 on ubuntu 12.04

follow official guide

$ echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" > /etc/apt/sources.list.d/pgdg.list
$ wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
$ sudo apt-get update
$ sudo apt-get install postgresql-9.3 postgresql-contrib-9.3

you should succesfully installing postgresql 9.3.2 on your machine.

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# rubocop config files for small Rails4/Ruby2 project
# blog post: http://joanswork.com/rubocop-rails-getting-started/

# .rubocop.yml

AllCops:
  Include:
    - Rakefile
    - config.ru
  Exclude:

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# replace file basename with a UUID when uploaded
# e.g.: avatar.jpg becomes 41bf830f-80cf-4efe-ad90-3b29bc6708b5.jpg
# but don't regenerate a UUID each time file url is accessed
class User < ActiveRecord::Base
  has_attached_file :avatar, path: ":basename.:extension"

  before_validation { set_avatar_file_name }

  def set_avatar_file_name
    # replace any NEW filename with a UUID

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#! /bin/bash
### BEGIN INIT INFO
# Provides:            redis-server
# Required-Start:      $remote_fs $syslog
# Required-Stop:       $remote_fs $syslog
# Should-Start:        $local_fs
# Should-Stop:         $local_fs
# Default-Start:       2 3 4 5
# Default-Stop:        0 1 6
# Short-Description:   redis-server - Persistent key-value db

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/*
 * Random-Number Utilities (randutil)
 *     Addresses common issues with C++11 random number generation.
 *     Makes good seeding easier, and makes using RNGs easy while retaining
 *     all the power.
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Melissa E. O'Neill
 *

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:arg **/**.{h,cpp}
:argdo %s/\(new NextAction(.\{-})\)/NextActionPtr(\1)/ge | update
:argdo %s/\(new NextAction([^()]*)\)/NextActionPtr(\1)/ge | update

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files = Dir["./**/**.{h,cpp}"]

def inplace_edit(file, bak, &block)
    old_stdout = $stdout
    argf = ARGF.clone

    argf.argv.replace [file]
    argf.inplace_mode = bak
    argf.each_line do |line|
        yield line

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#include <iostream>

void bubble_sort(int arr[5]) {
    for (int i = 0; i < 5; ++i) {
        for (int j = 1; j < (5 - i); ++j) {
            if (arr[j-1] > arr[j]) {
                int temp = arr[j-1];
                arr[j-1] = arr[j];
                arr[j] = temp;
            }

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YARD CHEATSHEET http://yardoc.org

cribbed from http://pastebin.com/xgzeAmBn

Templates to remind you of the options and formatting for the different types of objects you might want to document using YARD.

Modules

Namespace for classes and modules that handle serving documentation over HTTP