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require 'login_management'
 
use Rack::Session::Cookie
use Warden::Manager do |manager|
  manager.default_strategies :password
  manager.failure_app = LoginManager
end
 
run LoginManager

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class MyApplication < Sinatra::Base

  use Rack::Session::Cookie

  use Warden::Manager do |manager|
    manager.default_strategies :password
    manager.failure_app = MyApplication
  end

  Warden::Manager.serialize_into_session{ |user| user.id }

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# 30 minutes Lisp in Ruby
# Hong MinHee <http://dahlia.kr/>
#
# This Lisp implementation does not provide a s-expression reader.
# Instead, it uses Ruby syntax like following code:
#
#     [:def, :factorial,
#       [:lambda, [:n],
#         [:if, [:"=", :n, 1],
#               1,

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# =======================
# Spell: Object Extension
# =======================

# Define Singleton Methods by mixing a module into an object’s eigenclass.

obj = Object.new

module M
  def my_method

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# =======================
# Spell: Singleton Method
# =======================

# Define a method on a single object.

obj = "abc"

class << obj
  def my_singleton_method

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# ==================
# Spell: Monkeypatch
# ==================

# Change the features of an existing class.

"abc".reverse # => "cba"

class String
  def reverse

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# =====================
# Spell: String of Code
# =====================

# Evaluate a string of Ruby code.

my_string_of_code = "1 + 1"
eval(my_string_of_code) # => 2

# For more information: http://www.pragprog.com/titles/ppmetr/metaprogramming-ruby

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# =============================
# Spell: Lazy Instance Variable
# =============================

# Wait until the first access to initialize an instance variable.

class C
  def attribute
    @attribute = @attribute || "some value"
  end

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# ======================
# Spell: Named Arguments
# ======================

# Collect method arguments into a hash to identify them by name.

def my_method(args)
  args[:arg2]
end

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# ==================
# Spell: Hook Method
# ==================

# Override a method to intercept object model events.

$INHERITORS = []

class C
  def self.inherited(subclass)