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(('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a).sample(30).join #=> "yh8D5NrognVw16GldXPcCxJ24ALU3W"

# with special characters
(('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a + ['!','@','#','$','%','^','&','*']).sample(30).join #=> "Nc&inVolamjMLWfsE#k6$D^p2!b@XC"

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def collection_class_name(collection, index)
  if index == 0
    return 'first'
  elsif index == ( collection.size - 1 )
    return 'last'
  end
end

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NOTE: For all installations, as of 1.7, RVM no longer autoloads .rvmrc files. In order to return this
functionality, you MUST add 'export rvm_project_rvmrc=1' to your $HOME/.rvmrc file.
This causes RVM to override 'cd' which, while toggleable even < 1.7, is currently defaulted to 'off'.
This knob returns the previous behaviour to active which causes per-project .rvmrc files to be loaded
once again.

 
Example: echo 'export rvm_project_rvmrc=1' >> $HOME/.rvmrc && rvm reload

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ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
  if html_tag =~ /<label[^>]+/
    "<div class='field_with_errors'>#{html_tag}".html_safe
  else
    "#{html_tag}</div>".html_safe
  end
end

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> module Parsing where
>
> 
> import Data.Char
> import Control.Monad
> import Control.Applicative
>
> infixr 5 +++

The monad of parsers

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class TrafficLight
  class Lamp
    %w(name color).each do |attr|
      define_singleton_method("#{attr}=") do |value|
        define_method(attr) { value }
      end
    end

    def to_s
      name

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Object-Oriented Design

• Practical Object-Oriented Design in Ruby
• Growing Object-Oriented Software Guided by Tests

Ruby

• Confident Ruby
• Eloquent Ruby
• Ruby Under a Microscope

zporter

require 'rack/deflater'

module Rack
  class Deflater
    class GzipStream
      def each(&block)
        @writer = block
        gzip  =::Zlib::GzipWriter.new(self)
        gzip.mtime = @mtime
        @body.each { |part|

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defmodule AppName.FormHelpers do
  @doc """
  Generates a form input tag
  
  Example:
    <%= input f,
          :name,
          input: [
            placeholder: gettext("What should we call you?"),
          ],

zporter

use Ecto.Schema

import Ecto.Changeset

@type t :: module

# A required field for all embedded documents
@primary_key {:id, :binary_id, autogenerate: true}

schema "" do