Chee Yeo cheeyeo

## gist:388098
Rehearsal ----------------------------------------------------
using httpclient   0.570000   0.280000   0.850000 ( 42.646417)
using EM           0.140000   0.130000   0.270000 (  3.381920)

------------------------------------------- total: 1.120000sec

                       user     system      total        real
using httpclient   0.520000   0.230000   0.750000 ( 28.525617)
using EM           0.140000   0.130000   0.270000 (  3.902702)

## gist:390997
AmazeSNS.list_topics do |resp|
  response = Crack::XML.parse(resp.response)
  # do further processing here

 EM.stop
end

## gist:399702
# something trivial but might be helpful if you want to implement clearing the session hash when the user presses the
# Back button

# used in IQF project when the email contact link on top right of page has to show the title of current page

def clear_session
    response.headers["Cache-Control"] = "no-cache, no-store, max-age=0, must-revalidate"
    response.headers["Pragma"] = "no-cache"
    response.headers["Expires"] = "Fri, 01 Jan 1990 00:00:00 GMT"
end

## example1.rb
class Vehicle
  def start_engine
   # start the engine
  end


  def stop_engine
   #stop the engine
  end

## example2.rb
class Engine
  def initialize
    # set engine properties here etc
  end

  # other engine methods
end


class Car < Vehicle

## template_not_refactored.rb
class Report
  def initialize
    @title = 'Monthly Report'
    @text = ['Things are going', 'really, really well.']
  end

  def output_report(format)
    if format == :plain
      puts("*** #{@title} ***")
     elsif format == :html

## template_pattern.rb
class Report
  def initialize
    @title = 'My Report'
    @text = ['Lorem’, ‘Ipsum']
  end
end

def output_report
  output_start
  output_head

## template_pattern_subclass.rb
class HTMLReport < Report
  def output_start
    puts('<html>')
  end


  def output_head
    puts(' <head>')
    puts(" <title>#{@title}</title>")
    puts(' </head>')

## singleton_pattern_example.rb
require 'singleton'

class MyClass
  attr_accessor :data
  include Singleton
end

a = MyClass.instance
b = MyClass.instance

## singleton_logger.rb
require 'singleton'

class SimpleLogger
  include Singleton

  attr_accessor :level

  ERROR=1
  WARNING=2
  INFO=3
	Rehearsal ----------------------------------------------------
	using httpclient 0.570000 0.280000 0.850000 ( 42.646417)
	using EM 0.140000 0.130000 0.270000 ( 3.381920)

	------------------------------------------- total: 1.120000sec

	user system total real
	using httpclient 0.520000 0.230000 0.750000 ( 28.525617)
	using EM 0.140000 0.130000 0.270000 ( 3.902702)
	AmazeSNS.list_topics do \|resp\|
	response = Crack::XML.parse(resp.response)
	# do further processing here

	EM.stop
	end
	# something trivial but might be helpful if you want to implement clearing the session hash when the user presses the
	# Back button

	# used in IQF project when the email contact link on top right of page has to show the title of current page

	def clear_session
	response.headers["Cache-Control"] = "no-cache, no-store, max-age=0, must-revalidate"
	response.headers["Pragma"] = "no-cache"
	response.headers["Expires"] = "Fri, 01 Jan 1990 00:00:00 GMT"
	end
	class Vehicle
	def start_engine
	# start the engine
	end


	def stop_engine
	#stop the engine
	end
	class Engine
	def initialize
	# set engine properties here etc
	end

	# other engine methods
	end


	class Car < Vehicle
	class Report
	def initialize
	@title = 'Monthly Report'
	@text = ['Things are going', 'really, really well.']
	end

	def output_report(format)
	if format == :plain
	puts("* #{@title} *")
	elsif format == :html
	class Report
	def initialize
	@title = 'My Report'
	@text = ['Lorem’, ‘Ipsum']
	end
	end

	def output_report
	output_start
	output_head
	class HTMLReport < Report
	def output_start
	puts('<html>')
	end


	def output_head
	puts(' <head>')
	puts(" <title>#{@title}</title>")
	puts(' </head>')
	require 'singleton'

	class MyClass
	attr_accessor :data
	include Singleton
	end

	a = MyClass.instance
	b = MyClass.instance
	require 'singleton'

	class SimpleLogger
	include Singleton

	attr_accessor :level

	ERROR=1
	WARNING=2
	INFO=3