patriques82

CONTENT
Expressions, Statements and Controlstructures
  Equlaity
  Assigments
    The ||= idiom
    Other assignments
  Flip-flops
  Iterators
  Blocks
  Control-flow keywords

patriques82

Equality
The equal? method is defined by Object to test whether two values refer to exactly the same 
object. For any two distinct objects, this method always returns false:

   a = "Ruby" # One reference to one String object
   b = c = "Ruby" # Two references to another String object
   a.equal?(b) # false: a and b are different objects
   b.equal?(c) # true: b and c refer to the same object

By convention, subclasses never override the equal? method. The == operator is the most common 

patriques82

Linux (Debian) System Tasks:

SSH
   $ ssh optimusprime.se
   or 
   $ ssh 31.192.227.207

Add user (with root privileges):
   $ sudo useradd -s /bin/bash -m -d /home/<username> -c <username> (add user with bash and homedir)
   $ sudo passwd <username> (give password)

patriques82

GIT internals and workflows

Contents
  THEORY AND SETUP
    Installing and Configuration
    Intializing
    Object types and References
    Remotes
    How it works
     .gitignore file

patriques82

Content
  Installation
  RubyGems
  Gemsets
  Updates
  Configuration
  Environment 
    Using .rvmrc file (Best if many projects)
    Using different gemsets
  Databases

patriques82

Vim commands helpsheet

Contents
  My .vimrc commands
  Basics
  Movement
    Search and replacement
  Buffers and Windows
    Buffers
    Windows

patriques82

#Project 4 (this one is credited to https://gist.github.com/tomtung/1973534)
class Class
  def attr_accessor_with_history(attr_name)
    attr_name = attr_name.to_s
    attr_reader attr_name
    attr_reader attr_name+"_history"
    class_eval %Q{
      def #{attr_name}=(value)
        if(!defined?(@#{attr_name}_history))
          @#{attr_name}_history = [@#{attr_name}]