amoeba

require 'prawn'

Prawn::Document.generate('crop-marks.pdf') do
  spacing = 12
  margin = 100
  
  canvas do
    # topleft corner
    stroke_line [bounds.left + spacing, bounds.top - margin], 
                [bounds.left + margin - spacing, bounds.top - margin]

lucasfais

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

noteed

SSH tunnel for PostgreSQL connection

Create a .pgpass file that will be used to provide the password for any libpq-based program for the matching hostname/port/database/user. That file should be chmod'd 0600.

> cat .pgpass
127.0.0.1:5433:database:user:password

Create a SSH tunnel: we open the local port 5433 and, out of the tunnel, go to localhost:5432. You probably really want localhost and not remote: your PostgreSQL database is probably accepting connections only from locahost.

> ssh -N -L 5433:localhost:5432 user@remote

SabretWoW

# This is a skeleton for testing models including examples of validations, callbacks,
# scopes, instance & class methods, associations, and more.
# Pick and choose what you want, as all models don't NEED to be tested at this depth.
#
# I'm always eager to hear new tips & suggestions as I'm still new to testing,
# so if you have any, please share!
#
# @kyletcarlson
#
# This skeleton also assumes you're using the following gems: 

r00k

Question 1

What object-oriented programming advice is this code violating?

def check_for_overheating(system_monitor)
  if system_monitor.temperature > 100
    system_monitor.sound_alarms
  end
end