thisivan

# Base64
/^[0-9a-zA-Z+\/]+[=]{0,2}$/.match("SGVsbG8gV29ybGQh")
=> #<MatchData "SGVsbG8gV29ybGQh">

# R.F.C. (Méx)
/[A-Z]{3,4}[0-9]{6}[0-9A-Z]{3}/.match("ICS0707315S4")
=> #<MatchData "ICS0707315S4">

thisivan

# = Base Template
# Base application template for Innetra
# == Requirements
# Requires innetra-easy_generators (http://github.com/innetra/easy_generators/tree/master) and
# gem to work

root_controller_name = 'home'

if yes?('Install haml and innetra-easy_generators gems (both required)?')
  run 'gem sources -a http://gems.github.com'

thisivan

= form.collection_select :company_id, Company.all + |
  [OpenStruct.new(:id => 'new', :name => 'New Company')], :id, :name

thisivan

# Find text in files
find | xargs grep 'text to find' -l

# Find and exec command
find -name '*.bak' -exec rm {} \;

# Find only dirs
find -type d

# Find only files

thisivan

# Undo commit
git reset --soft HEAD^

thisivan

class ApplicationController < ActionController::Base
  before_filter :set_current_account

  private
    def set_current_account
      @current_account =
        Account.find_by_subdomain(request.subdomains.last)
    end
end

thisivan

def gsub_file(relative_destination, regexp, *args, &block)
  path = destination_path(relative_destination)  
  content = File.read(path).gsub(regexp, *args, &block)
  File.open(path, 'wb') { |file| file.write(content) }
end

thisivan

# = Mixin Template
# == Usage
# ActionController::Base.send :include, MixinModuleName

module MixinModuleName

  def self.included(recipient)
    recipient.extend(ClassMethods)
    recipient.class_eval do
      include InstanceMethods

thisivan

require 'benchmark'

puts Benchmark.measure { "a"*1_000_000 }
0.060000   0.000000   0.060000 (  0.067556)
=> nil

n = 50000
Benchmark.bm do |x|
  x.report { for i in 1..n; a = "1"; end }
  x.report { n.times do   ; a = "1"; end }

thisivan

# Random chars
chars = ('a'..'z').to_a + ('A'..'Z').to_a
(0...10).collect { chars[Kernel.rand(chars.length)] }.join
=> "nmhhuMrybz"