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Concept

(The blockquote style does not look so well so I just pasted directly, but these are all quoted from the links in the bottom of this page)

You should not implement to_str unless your object acts like a string, rather than just having a string representation. The only core class that implements to_str is String itself.

[to_i and to_s] are not particularly strict: if an object has some kind of decent representation as a string, for example, it will probably have a to_s method… [to_int and to_str] are strict conversion functions: you implement them only if you object can naturally be used every place a string or an integer could be used.

to_str is used by methods such as String#concat to convert their arguments to a string. Unlike to_s, which is supported by almost all classes, to_str is normally implemented only by those classes that act like strings. Of the built-in classes, only Exception and String implement to_str

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Disclaimer: The following examples try to give an overview of the process followed in different scenarios. Some commands were actually written from memory. Some tools might exist simplifying all this. Furthermore, I'm no expert so if anyone ever reads this and knows any improvement, please let me know.

Case 1: Direct access to Pairing Station

Given that the Guest User can access the Pairing Station directly, either because the station is publicly available or because NAT port forwarding can be used, there's only one thing we need to do, give ssh access to the Guest User by adding his ssh public key to our Local User (pair) .ssh/authorized_keys file.

The local user would open up a tmux session with

tmux new-session -s pairing

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colors = ['Red', 'Blue', 'Green', 'Yellow', 'Black']

states = ['Andhra', 'Karnataka', 'TamilNadu', 'Kerala']

neighbors = {}
neighbors['Andhra'] = ['Karnataka', 'TamilNadu']
neighbors['Karnataka'] = ['Andhra', 'TamilNadu', 'Kerala']
neighbors['TamilNadu'] = ['Andhra', 'Karnataka', 'Kerala']
neighbors['Kerala'] = ['Karnataka', 'TamilNadu']

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#!/bin/bash

set -e

### BEGIN INIT INFO
# Provides: unicorn
# Required-Start: $all
# Required-Stop: $network $local_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6

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# ...

gem 'carrierwave'
gem 'fog', '~> 1.0.0' # Need to specify version, as carrierwave references older (0.9.0) which doesn't allow configuration of Rackspace UK Auth URL

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gem 'pg'
group :development do
	gem 'ruby-debug'
end
gem 'rake', '~> 0.8.7'
gem 'devise'
gem 'oa-oauth', :require => 'omniauth/oauth'
gem 'omniauth'
gem 'haml'
gem 'dynamic_form'

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# Unicorn tasks
namespace :unicorn do
  def pid_path
    "#{shared_path}/pids/unicorn.pid"
  end

  def socket_path
    "#{shared_path}/sockets/unicorn.sock"
  end

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worker:     QUEUE=* bundle exec rake environment resque:work 
scheduler:  bundle exec rake environment resque:scheduler

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#!/bin/bash
### BEGIN INIT INFO
# Provides:          thin
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      S 0 1 6
# Short-Description: thin initscript
# Description:       thin
### END INIT INFO

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body.active_admin {
  .cke_chrome {
    width: 76% !important;
    overflow: hidden;
  }
  .cke_dialog_background_cover{
    background-color: black !important;
  }
}
body.active_admin {