kyuden

 pry -r./config/environment

kyuden

class Object
  def self.yaml_tag url
    Psych.add_tag(url, self)
  end

  # FIXME: rename this to "to_yaml" when syck is removed

  ###
  # call-seq: to_yaml(options = {})
  #

kyuden

module Fibona
  @@memo = [0 , 1];

  def self.[](n)
    #既にメモされている最大の値から計算開始
    #求めたい値が既に計算済みならこのループは実行されない
    @@memo.size.upto(n){|i| @@memo[i] = @@memo[i - 1] + @@memo[i - 2]}
    @@memo[n]
  end
end

kyuden

def fizz_buzz(n)
  trance = "#{["Fizz"][n % 3]}#{["Buzz"][n % 5]}"
  trance.empty? ? n.to_s : trance
end

puts (1..100).map{|n| fizz_buzz n }

kyuden

class Fibona
  @@n1, @@n2 = 0, 0

  def self.fibonacci(n)
    if n > 3
      @@n2 += 1 if n == 4
      return fibonacci(n - 2) + fibonacci(n - 1) + 1;
    elsif n == 3
      @@n2 += 1
      @@n1 += 1

kyuden

class BenchmarkFilter
  def filter(controller)
    timer = Time.now
    Rails.logger.debug do
      "- Action #{controller.action_name} started. |"
    end
    
    yield
    elaped_time = Time.now - timer
    Rails.logger.debug do

kyuden

class BenchmarkFilter
 def before(controller)
  @timer = Time.now
    Rails.logger.debug do
      "- Action #{controller.action_name} started. |"
    end
 end

 def after(controller)
   elaped_time = Time.now - @timer

kyuden

#Git各種パッケージのインストール
sudo aptitude install git git-core curl 

#rbenvインストール  
git clone git://github.com/sstephenson/rbenv.git ~/.rbenv    

#PATH設定  
vi /home/USERNAME/.bash_profile　
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"

kyuden

#ProcBlok変換復習
3.times{p 'hoge'}

proc = Proc.new{ p 'hoge'}

3.times{proc.call}

3.times(&proc)

def my_method(&hoge)

kyuden

%a{:href => "/say/goodbye"}=@time

%p
  %a= link_to "back", hello_path

- for file in @files
  %li ファイ名: #{file}