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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: Symbol to Proc
# =====================

# Convert a symbol to a block that calls a single method.

[1, 2, 3, 4].map(&:even?)	# => [false, true, false, true]

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

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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

zzak

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

# Define a method on a single object.

obj = "abc"

class << obj
  def my_singleton_method

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# ===================
# Spell: Shared Scope
# ===================

# Share variables among multiple contexts in the same Flat Scope (103).

lambda {
  shared = 10
  
  self.class.class_eval do

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# =================
# Spell: Self Yield
# =================

# Pass self to the current block.

class Person
  attr_accessor :name, :surname

  def initialize

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# =================
# Spell: Scope Gate
# =================

# Isolate a scope with the class, module, or def keyword.

a = 1
defined? a # => "local-variable"

module MyModule

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# ==============
# Spell: Sandbox
# ==============

# Execute untrusted code in a safe environment.

def sandbox(&code)
  proc {
    $SAFE = 2
    yield