brianstorti

module Debug
  def who_am_i?
    self.class.name
  end
end

class A
  include Debug
end

brianstorti

module Summable
  def sum
    inject{ |i,j| i + j }
  end
end

class Array
  include Summable
end

brianstorti

For those having trouble with 'ç' on Ubuntu 11.04:

Open gtk.immodules

$ sudo vim /usr/lib/gtk-2.0/2.10.0/gtk.immodules

Edit the following line:

  "cedilla" "Cedilla" "gtk20" "/usr/share/locale" "az:ca:co:fr:gv:oc:pt:sq:tr:wa" 

brianstorti

# Selection sort (very slow on large lists)

a = [9,8,6,1,2,5,4,3,9,50,12,11]
n = a.size - 1

n.times do |i|
  index_min = i

  (i + 1).upto(n) do |j|
    index_min = j if a[j] < a[index_min]

brianstorti

# Insertion sort (inefficient on large lists)

require 'test/unit'

def sort(a)
  n = a.size - 1
  1.upto(n) do |i|
    new_value = a[i]
    j = i
    while j > 0 && a[j - 1] > new_value do

brianstorti

# Bubble sort (inefficient for sorting large data volumes)

require 'test/unit'

def sort(a)
  swapped = true
  n = a.size
  j = 0
  while swapped do
    swapped = false

brianstorti

cd ~/Dropbox
mkdir -p repos/myrepo.git
cd !$
git --bare init

cd ~/Projects/myrepo
git remote add dropbox file://$HOME/Dropbox/repos/myrepo.git
git push dropbox master

brianstorti

a = [1,2,3,4]

a.select{|n| n > 2}  # 3,4
a.reject{|n| n > 2}  # 1,2
a.collect{|n| n * 2} # 2,4,6,8

brianstorti

require 'dbi'

begin
  dbh = DBI.connect("DBI:Mysql:test:localhost", "root", "")
  row = dbh.select_one("SELECT VERSION()")
  puts "Server version: #{row[0]}"
rescue DBI::DatabaseError => e
  puts "An error occurred"
ensure
  dbh.disconnect if dbh

brianstorti

#DevKit

Download DevKit at http://rubyinstaller.org/downloads
ruby dk.rb init
ruby dk.rb review
ruby dk.rb install

#curl

Download curl at http://www.gknw.net/mirror/curl/win32/ (devel)