conv.rb

to_s(base), to_i(base)を94まで対応

#!/usr/local/bin/ruby
# -*- encoding:utf-8 -*-
module Conv
  TABLE = ('!'..'~').to_a

  def to_s_conv(base, rs=[])
   q, r = self.divmod base
   rs.unshift TABLE[r]
   q.to_s_conv(base, rs) if q > 0
   rs.join
  end

  def to_i_conv(base)
    self.split(//).reverse.map.with_index { |s, i| TABLE.index(s).to_i * base**i }.inject(:+)
  end
end

class Fixnum
  include Conv
  alias to_s_orig to_s
  def to_s(base=10)
    base > 36 ? to_s_conv(base) : to_s_orig(base)
  end
end

class Bignum
  include Conv
  alias to_s_orig to_s
  def to_s(base=10)
    base > 36 ? to_s_conv(base) : to_s_orig(base)
  end
end

class String
  include Conv
  alias to_i_orig to_i
  def to_i(base=10)
    base > 36 ? to_i_conv(base) : to_i_orig(base)
  end
end

x = 200_000_000_000
(2..94).each do |i|
  s = x.to_s(i)
  print "#{i} => #{s}:#{s.to_i(i)}\n"
end

 

TinyURL with Ruby

Points

• urlをDBのidに置き換え、さらにInteger#to_i(36)を使って短縮する
• cssをw3cサイトから借用
• 環境変数envから参照元つまり自サイトのurlを取得
  

 

%w(rubygems sinatra dm-core dm-timestamps dm-migrations uri).each { |lib| require lib }

configure :development do
  DataMapper.setup(:default, "sqlite3://#{Dir.pwd}/chop.db")
end

get '/' do
  haml :index
end

post '/' do
  uri = URI::parse(params[:original])
  raise "Invalid URL" unless [URI::HTTP, URI::HTTPS].any? { |scm| uri.kind_of? scm }
  @url = Url.first_or_create(:original => uri.to_s)
  haml :index
end

get '/:chopped' do |chopped|
  redirect Url.first(:id => chopped.to_i(36)).original
end

error do
  'Sorry there was a nasty error - ' + env['sinatra.error'].name
end

class Url
  include DataMapper::Resource
  property :id,         Serial
  property :original,   String, :length => 255
  property :created_at, DateTime

  def chopped
    self.id.to_s(36)
  end
end

__END__
@@ layout
!!! 1.1
%html
  %head
    %title Chop!
    %link{:rel => 'stylesheet', :href => 'http://www.w3.org/StyleSheets/Core/Modernist', :type => 'text/css'}
  %body
    = yield

@@ index
%h1.title Chop!
- unless @url.nil?
  %code= @url.original
  chopped to
  %a{:href => env['HTTP_REFERER'] + @url.chopped}
    = env['HTTP_REFERER'] + @url.chopped
%form{:method => 'post', :action => '/'}
  Chop this:
  %input{:type => 'text', :name => 'original', :size => '50'}
  %input{:type => 'submit', :value => 'chop!'}
%small copyright ©

denki

電気代
2010年7月分
6,759円（295ｋW)

2008年が6069円

rmagick install

rmagickでフォントが読み込めないので
以下のサイトに従ってすべてを再インストール

http://web.elctech.com/2007/02/24/installing-rmagick-properly-in-osx/

うまくいかない
で

$ sudo port edit imagemagick

variants myvar {
configure.args-append --with-gs-font-dir=/opt/local/share/ghostscript/fonts
}

を追加
$ sudo port install imagemagick +myvar でインストール

denki

2010 年6月電気代

4774円(203ｋｗ)
去年は5,052円（216ｋｗ）

Nokogiri libxml2 version warning

gem install nokogiri -- --with-xml2-include=/opt/local/include/libxml2 --with-xml2-lib=/opt/local/lib --with-xslt-dir=/opt/local


http://wiki.github.com/tenderlove/nokogiri/what-to-do-if-libxml2-is-being-a-jerk



GistのコードをGitHubに移管する

GistのコードをGitHubに移管する

1. GitHubで新規プロジェクトをcreateする
2. gistのremote nameを変える：git remote rename origin gist
   
3. gistのworking directoryでそのremote(origin)を追加する： git remote add origin git@github.com:melborne/graphaz.git
4. 新たなremoteにpushする： git push origin master

vim

VIMの環境設定

installされているVIMには以下のものがある

1. /usr/bin/vim or /usr/bin/vi
   
2. /opt/local/bin/vim or /opt/local/bin/vi
   
3. /Applications/MacVim.app "$@"'
4. /Applications/Macport/Vim.app
   

普通にvimすると優先パスに従って１が起動されてしまうが、１はヴァージョンが古く.vimrcをうまく読めない。
それでvi, vimで２が、mvimで３が呼ばれるように.zshrcを設定した。

export EDITOR='/opt/local/bin/vim'
alias vi='$EDITOR'
alias vim='$EDITOR'
alias mvim='env LANG=ja_JP.UTF-8 open -a /Applications/MacVim.app "$@"'

post a bloops sound file to HatenaDiary

Bloopsで作った音楽をはてダにアップする手順

1. SoundFlowerをインストールして、システムーサウンドの設定でその出力をsoundflower 2chに、GarageBandの設定で入力をsoundflower 2chにする
2. GarageBandで自然音源からのトラックを作り、録音を開始。すぐにbloopsのプログラムを実行
3. GarageBandで作成したファイルをiTunesで共有
4. iTunesの一般設定ー読み込み設定でmp3を選び、ファイルをmp3に変換
5. mp3ファイルをDropboxのPublicフォルダに置き、そのpublic linkを取得
6. はてダで、[http://dl.dropbox.com/u/58702/SuperMarioBrothers.mp3:sound]のようにすれば完了

sound for termtter

sound for termtter

  def self.bloops
    b = Bloops.new
    b.tempo = 216
   
    sound = b.sound Bloops::SQUARE
    sound.volume = 0.4
    #Mario:d=16,o=6,b=100:
    sound.sustain = 0.2
    #sound.attack = 0.2
    sound.decay = 0.5
   
    b.tune sound, "32 + C E F# 8:A G E C - 8:A 8:F# 8:F# 8:F# 2:G"
    b.play
    sleep 1 while !b.stopped?
  end

  register_hook(
    :name => :bloops,
    :point => :output,
    :exec => lambda { |statuses, event|
      if event == :update_friends_timeline
        bloops if statuses.any? { |s| s.text =~ /t/i }
      end
    }
  )

bloopsaphone install

bloopsaphone install

sudo port install portaudio
sudo gem install bloopsaphone -- --with-opt-lib=/opt/local/lib --with-opt-include=/opt/local/include
  

ruby:rename_file

rename_file.rb

#!/usr/bin/env ruby -Ku
# -*- encoding: utf-8 -*-

def main
   batch_name, file_type = user_inputs
  
   cnt = 0
   Dir["*.#{file_type}"].each_with_index do |file, i|
     new_name = "#{batch_name}#{i+1}.#{file_type}"
     unless File.exist?(new_name)
       File.rename(file, new_name)
       cnt += 1
     end
   end
   puts "#{cnt} files renamed."
rescue => e
  puts e
end

def user_inputs
  batch_name = ARGV[0] || (print "Input batch name: "; STDIN.gets.chomp)

  file_type = ARGV[1] || (print "Input target file type: "; STDIN.gets.downcase.chomp)

  puts "Filename: '#{batch_name}[number].#{file_type}' OK? (y|n)"
  exit unless STDIN.gets =~ /^y/i
  return batch_name, file_type
end

main

vim encoding

:e ++enc=euc-jp

Interpreter

tc_ast.rb

require "test/unit"

require_relative "ast"

class TestAst < Test::Unit::TestCase
  def test_bigger
    assert_equal((91..100).to_a, bigger(90).evaluate(1..100))
  end
 
  def test_smaller
    assert_equal([1,4,9,12], smaller(15).evaluate([1,20,4,66,23,9,40,12]))
  end

  def test_even
    assert_equal([2,4,6,8,10,12,14,16], even.evaluate(1..16))
  end
 
  def test_odd
    assert_equal([1,3,5,7,9,11,13,15], odd.evaluate(1..16))
  end
 
  def test_bigger_and_even
    assert_equal([32,44,56],
                 ( bigger(30) & even ).evaluate([4,32,11,23,56,7,43,44,2,14]))
  end
 
  def test_smaller_and_odd
    assert_equal([7,11,23],
                 ( smaller(30) & odd ).evaluate([4,32,11,23,56,7,43,44,2,14]))
  end
 
  def test_bigger_or_even
    assert_equal([2,4,14,32,43,44,56],
                 ( bigger(30) | even ).evaluate([4,32,11,23,56,7,43,44,2,14]))
  end
 
  def test_smaller_or_odd
    assert_equal([2,4,7,11,14,23,43],
                 ( smaller(30) | odd ).evaluate([4,32,11,23,56,7,43,44,2,14]))
  end

  def test_bigger_and_even_or_smaller_and_odd
    assert_equal([7,11,23,44,56],
                 ( ( bigger(40) & even ) | ( smaller(30) & odd ))
                 .evaluate([4,32,11,23,56,7,43,44,2,14]))
  end
end

ast.rb

#!/usr/local/bin/ruby
# -*- encoding:utf-8 -*-

class Expression
  def evaluate(context)
    context.select { |x| yield(x) }
  end
 
  def &(other)
    And.new(self, other)
  end
 
  def |(other)
    Or.new(self, other)
  end
end

class Bigger < Expression
  def initialize(num)
    @num = num
  end
 
  def evaluate(context)
    super { |n| n > @num }
  end
end

class Smaller < Expression
  def initialize(num)
    @num = num
  end
 
  def evaluate(context)
    super { |n| n < @num }
  end
end

class Even < Expression
  def evaluate(context)
    super { |n| n.even? }
  end
end

class Odd < Expression
  def evaluate(context)
    super { |n| n.odd? }
  end
end

class And < Expression
  def initialize(exp1, exp2)
    @exp1, @exp2 = exp1, exp2
  end
 
  def evaluate(context)
    (@exp1.evaluate(context) & @exp2.evaluate(context)).sort
  end
end

class Or < Expression
  def initialize(exp1, exp2)
    @exp1, @exp2 = exp1, exp2
  end
 
  def evaluate(context)
    (@exp1.evaluate(context) | @exp2.evaluate(context)).sort
  end
end

def bigger(num)
  Bigger.new(num)
end

def smaller(num)
  Smaller.new(num)
end

def even
  Even.new
end

def odd
  Odd.new
end

interpreter = bigger(70) & even | smaller(20) & odd
p interpreter.evaluate(1..100)

def extract(context)
  (context.select { |n| n > 70 }.select { |n| n.even? } |
   context.select { |n| n < 20 }.select { |n| n.odd? }).sort
end
p extract(1..100)

Interpreter Pattern

#!/usr/local/bin/ruby
# -*- encoding:utf-8 -*-
require "find"

class Expression
  def |(other)
    Or.new(self, other)
  end
 
  def &(other)
    And.new(self, other)
  end
end

class All < Expression
  def evaluate(dir)
    results = []
    Find.find(dir) do |p|
      next unless File.file?(p)
      results << p
    end
    results
  end
 
end

class FileName < Expression
  def initialize(pattern)
    @pattern = pattern
  end
 
  def evaluate(dir)
    results = []
    Find.find(dir) do |p|
      next unless File.file?(p)
      name = File.basename(p)
      results << p if File.fnmatch(@pattern, name)
    end
    results
  end
end

class Not < Expression
  def initialize(expression)
    @expression = expression
  end
 
  def evaluate(dir)
    All.new.evaluate(dir) - @expression.evaluate(dir)
  end
end

class Or < Expression
  def initialize(expression1, expression2)
    @expression1, @expression2 = expression1, expression2
  end
 
  def evaluate(dir)
    result1 =@expression1.evaluate(dir)
    result2 =@expression2.evaluate(dir)
    (result1 + result2).sort.uniq
  end
end

class Bigger < Expression
  def initialize(size)
    @size = size
  end
 
  def evaluate(dir)
    results = []
    Find.find(dir) do |p|
      next unless File.file?(p)
      name = File.basename(p)
      results << p if File.size(p) > @size
    end
    results
  end
end

class Writable < Expression
  def evaluate(dir)
    results = []
    Find.find(dir) do |p|
      next unless File.file?(p)
      name = File.basename(p)
      results << p if File.writable?(p)
    end
    results
  end
 
end

class And < Expression
  def initialize(expression1, expression2)
    @expression1, @expression2 = expression1, expression2
  end
 
  def evaluate(dir)
    result1 =@expression1.evaluate(dir)
    result2 =@expression2.evaluate(dir)
    (result1 & result2)
  end
end

def all
  All.new
end
def bigger(size)
  Bigger.new(size)
end
def file_name(pattern)
  FileName.new(pattern)
end
def except(expression)
  Not.new(expression)
end
def writable
  Writable.new
end

p ((bigger(1000) & except(writable)) | file_name('*.mp3')).evaluate('/Users/keyes/Desktop/')

2010 年５月電気代

2010 年5月電気代

8025円（３５５kw)
去年は6,086円（２５８ｋｗ）
今年は寒かったから

体調不良

体調不良だ
月曜日にスタバに行ってからおかしい
その日は暑くてスタバでは冷房が入っていてそれで体調を崩したらしい
それと共に複数の病気が同時並行的に襲ってきている

1. 左手中指の爪の間から菌が入って指が腫れる。激痛。針で膿を出して、少し腫れと痛みは引いた。
2. 右睾丸に痛み。副睾丸炎か。原因はよくわからないが、細菌性のものか。未だ痛みが引かず。
3. 全体的に体がだるく、頭痛、歯痛、肩・首痛、腰痛あり。前々日指の痛みでの睡眠不足もあり、昨日は幾らでも寝られる感じ。今日はそうでもない。

スタバで体が冷えて悪寒がしたので、それで細菌に対する抵抗力が低下したようだ

ruby DSL

#!/usr/bin/env ruby -Ku
# -*- encoding: utf-8 -*-

class Task
  attr_accessor :name, :alarm, :coffee, :out
  def initialize
  end

  def task(task_name)
    @name = task_name
    yield(self)
  end


end

my_task = Task.new
my_task.instance_eval(DATA.read)

p my_task.name
p my_task.alarm
p my_task.coffee
p my_task.out

__END__
task 'morning' do |t|
  t.alarm = '7:00'
  t.coffee = :blue_mountain
  t.out = '9:00'
end

fib by ruby

fib by ruby

#!/usr/local/bin/ruby
# -*- encoding:utf-8 -*-
require 'benchmark'
require "memoize"
include Memoize

def fib_time n
  a, b = 0, 1
  n.times do
    a, b = a, a+b
  end
  a
end

def fib_inj n
  (1..n).inject([0,1]) do |mem, i|
    mem << mem[i-1] + mem[i]
  end[-2]
end

def fib_inj2 n
  (1..n).inject([0,1]) do |mem, i|
    mem = mem[1], mem[0] + mem[1]
  end[0]
end

def fib_recur n
  return n if n < 2
  fib_recur(n-1) + fib_recur(n-2)
end

def fib_memo n
  return n if n < 2
  @series ||= []
  @series[n] ||= fib_memo(n-2) + fib_memo(n-1)
end

def fib_memoize n
  return n if n < 2
  fib_memoize(n-1) + fib_memoize(n-2)
end
memoize :fib_memoize

series = []
fib_proc = lambda do |n|
  return n if n < 2
  series[n] ||= fib_proc[n-1] + fib_proc[n-2]
end

def fib_proc_def(n)
  series = []
  _fib = lambda do |n|
    return n if n < 2
    series[n] ||= _fib[n-1] + _fib[n-2]
  end
  _fib[n]
end

N = 2500

Benchmark.bmbm do |x|
  x.report "fib with time" do
    fib_time N
  end
 
  x.report "fib with inject" do
    fib_inj N
  end
 
  x.report "fib with inject2" do
    fib_inj2 N
  end
  # x.report "fib with recur" do
  #   fib_recur N
  # end
 
  x.report "fib_memo" do
    fib_memo N
  end
 
  # x.report "fib_memoize" do
  #   fib_memoize N
  # end
 

  x.report "fib_proc_def" do
    fib_proc_def N
  end
 
  # x.report "fib_proc" do
  #   fib_proc[N]
  # end
end

# series = []
# def fib_proc n
#   return n if [0,1].include? n
#   res = lambda { series[n] ||= fib_proc(n-1) + fib_proc(n-2) }
#   res.call
# end
# p fib_proc(20)

attr_accessor

attr_accessor

#!/usr/bin/env ruby -Ku
# -*- encoding: utf-8 -*-

class T
  def self.access_attribute(name)
    define_method(name) do
      instance_variable_get("@#{name}")
    end
    define_method("#{name}=") do |word|
      instance_variable_set("@#{name}", word)
    end
  end

end

class D < T
  access_attribute :hello
  def initialize(hello)
    @hello = hello
  end
end

d = D.new('Yah!')
p d.hello
d.hello = "YoY"
p d.hello