Ruby 1.9 m17n リファレンス (ä¸å®Œå…¨ç‰ˆ) - diary of a madman
以å‰æ›¸ã„ãŸè¨˜äº‹(Ruby 1.9 ã®æ–°æ©Ÿèƒ½ã‚’調ã¹ã¦ã¿ãŸ)ã® m17n ãŒã‚‰ã¿ã®ç®‡æ‰€ã«ã¤ã„ã¦ã‚³ãƒ¡ãƒ³ãƒˆã‚„らトラックãƒãƒƒã‚¯ã‚„らをã„ãŸã ã„ãŸã®ã§ã€ã‚‚ã†å°‘ã—調ã¹ã¦ã¾ã¨ã‚ã¦ã¿ãŸã€‚ ãªãŠã€1.9.0 リリース版ã§ã¯ãªãã€é–‹ç™ºç‰ˆ(trunk r14835)ã§å‹•ä½œã‚’確èªã—ã¦ã„る。 コマンドラインオプション -E --encoding "ruby -E エンコーディングå" ã¾ãŸã¯ "ruby --encoding=エンコーディングå" ã®ã‚ˆã†ã«ä½¿ã†ã€‚ Encoding.default_external を指定ã—ãŸã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã«å¤‰æ›´ã™ã‚‹ã€‚ コマンドラインã§æŒ‡å®šã—ãŸã‚¹ã‚¯ãƒªãƒ—トファイル(ã¾ãŸã¯ -e ã§æŒ‡å®šã—ãŸã‚¹ã‚¯ãƒªãƒ—ト)ã®ã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã‚’変更ã™ã‚‹ã€‚(スクリプト内ã§ãƒžã‚¸ãƒƒã‚¯ã‚³ãƒ¡ãƒ³ãƒˆã«ã‚ˆã‚‹ã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°æŒ‡å®šã‚’è¡Œãªã£ãŸã®ã¨åŒã˜åŠ¹æžœã ãŒã€ãƒžã‚¸ãƒƒã‚¯ã‚³ãƒ¡ãƒ³ãƒˆã§æŒ‡å®šãŒã‚ã‚‹å ´åˆã¯ãã¡ã‚‰ãŒå„ªå…ˆ) -K ruby 1.8
How do you pipe output from a Ruby script to 'head' without getting a broken pipe error
I have a simple Ruby script that looks like this require 'csv' while line = STDIN.gets array = CSV.parse_line(line) puts array[2] end But when I try using this script in a Unix pipeline like this, I get 10 lines of output, followed by an error: ruby lib/myscript.rb < data.csv | head 12080450 12080451 12080517 12081046 12081048 12081050 12081051 12081052 12081054 lib/myscript.rb:4:in `write': Broke
GitHub - arsduo/koala: A lightweight Facebook library supporting the Graph, Marketing, and Atlas APIs, realtime updates, test users, and OAuth.
Koala is a Facebook library for Ruby, supporting the Graph API (including the batch requests and photo uploads), the Marketing API, the Atlas API, realtime updates, test users, and OAuth validation. We wrote Koala with four goals: Lightweight: Koala should be as light and simple as Facebook’s own libraries, providing API accessors and returning simple JSON. Fast: Koala should, out of the box, be q
ã€iPhone】Push Notificationã®å®Ÿè£…方法 | iphoneアプリã§ç¨¼ã’ã‚‹ã®ã‹
新作ã§Twitter,ã¯ã¦ãª,Google Readerã‹ã‚‰æ¨ªæ–çš„ã«æƒ…å ±åŽé›†ã—ã€ãƒžãƒ«ãƒãƒã‚¹ãƒˆã™ã‚‹ã‚¢ãƒ—リを作ã£ã¦ã„ã‚‹ã®ã§ã™ãŒã€ãã“ã§Twitterã®ãƒªãƒ—ライPush機能を実装ã—ãŸã®ã§ã€Push Notificationを実装ã™ã‚‹æ–¹æ³•ã‚’ã¾ã¨ã‚ã¦ã¿ã¾ã™ã€‚ Push Notificationã®æµã‚Œ Push Notificationã«é–¢ã™ã‚‹ç™»å ´äººç‰©ã¯ã€ iPhone Apple Push Notification Service(APNs) Provider ã®ï¼“者ã§ã™ã€‚ iPhoneã¯ã„ã‚ãšã‚‚ãŒãªã€ã¿ã‚“ãªã®æ‰‹å…ƒã«ã‚ã‚‹iPhone。APNsã¯AppleãŒç”¨æ„ã—ã¦ã„ã‚‹Pushã—ã¦ãれるやã¤ã§ã™ã€‚Providerã¯ã€é–‹ç™ºè€…ãŒç”¨æ„ã™ã‚‹ã‚‚ã®ã§ã€ã“ã„ã¤ãŒPushã—ãŸã„æƒ…å ±ã‚’é€ã‚‹å½¹å‰²ã‚’æŒã¡ã¾ã™ã€‚ ã“ã®ï¼“者間ã§ã®ãƒ‡ãƒ¼ã‚¿ã®æµã‚Œã¯å¤§ããデãƒã‚¤ã‚¹ç™»éŒ²ã¨Push通知ã®ï¼’ã¤ã®ãƒ•ã‚§ãƒ¼ã‚ºã«åˆ†ã‹ã‚Œã¾ã™ã€‚ デãƒã‚¤ã‚¹ç™»éŒ²
Ruby ã§ç”»åƒã‚’扱ㆠ- 見上ã’ã‚Œã°ã€ç©º
Imlib2-Ruby を使ã£ã¦ç”»åƒã‚’扱ã£ã¦ã¿ã¾ã™ã€‚ 多用ãªå½¢å¼ã‚’サãƒãƒ¼ãƒˆã—èªã¿æ›¸ãç‰ã‚‚速ㄠImlib2 ã¨ã„ã†ç”»åƒå‡¦ç†ãƒ©ã‚¤ãƒ–ラリãŒã‚り〠Ruby ã®ãƒã‚¤ãƒ³ãƒ‡ã‚£ãƒ³ã‚°ã§ã‚ã‚‹ Imlib2-Ruby ãŒå…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ Ubuntu ã§ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ã«ã¯ apt-get を使ãˆã°ã„ã„らã—ã„。 $ sudo apt-get install libimlib2-ruby Mac ã®å ´åˆã¯ Imlib2ã§ImageMagickより3å€é«˜é€Ÿã‹ã¤ç¾Žã—ã„サムãƒã‚¤ãƒ«ç”»åƒã®ç”Ÿæˆ - 昼メシ物語 ã‚’å‚照。 ピクセルã”ã¨ã‚°ãƒ¬ãƒ¼ã‚¹ã‚±ãƒ¼ãƒ«ã«å¤‰æ›ã™ã‚‹ä¾‹ã€‚ require 'imlib2' img = Imlib2::Image.load("src.jpg") img.h.times do |y| img.w.times do |x| c = img.pixel(x, y) gray = (0.299 * c.r
Rubyã‹ã‚‰HAMLをテンプレートã¨ã—ã¦ä½¿ã† - ã²ã’ã‚ã
Railsç‰ã®ãƒ—レームワークã ã¨ã ã„ãŸã„誰ã‹ãŒãƒ—ラグインを作ã£ã¦ã„ã¦ã€ãã‚ŒãŒé¢å€’を見ã¦ãれるã®ã§æ„è˜ã›ãšã«HAMLを使ãˆã‚‹ãŒã€ä»Šå›žã¯ç´ ã®Rubyスクリプトã‹ã‚‰ä½¿ã†å ´åˆã€‚ Haml::Engineã®renderメソッドåˆã¯render_procメソッドを使ã†ã€‚ render example.html.haml %p= hello 変数ã®å†…容をã²ã¨ã¤å‡ºåŠ›ã™ã‚‹ã ã‘ã®ã‚ã¾ã‚Šã«ã‚·ãƒ³ãƒ—ルãªãƒ†ãƒ³ãƒ—レートファイル。 haml_example.rb require 'haml' File.open("example.html.haml") do |f| Haml::Engine.new(f.read, :format => :xhtml).render(Object.new, :hello => "Hello World!!") end Haml::Engineã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã‚’作ã£ã¦renderã™ã‚‹ã€‚ Ha
Rubyã® == 㨠equal? 㨠=== 㨠eql? ã®ã¾ã¨ã‚ - Rubyリファレンス日記
== 数値ã€æ–‡å—列ã€é…列ãªã©ã§ã€ã€Œç‰ã—ã„ã‹ã©ã†ã‹ã€ã€ŒåŒã˜å†…容ã‹ã©ã†ã‹ã€ã‚’調ã¹ã‚‹ã®ã«ä½¿ã„ã¾ã™ã€‚別ã®ã‚ªãƒ–ジェクト（別ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã¸ã®å‚照）ã§ã‚‚åŒã˜å†…容ãªã‚‰trueã«ãªã‚Šã¾ã™ã€‚ Rubyã§ã¯æ•°å€¤ã¨æ–‡å—列ã®é–“ã®è‡ªå‹•å¤‰æ›ã¯è¡Œã‚ã‚Œã¾ã›ã‚“ã®ã§ã€1 == "1"ã¯falseã§ã™ã€‚æ•´æ•°ã¨æµ®å‹•å°æ•°ç‚¹æ•°ã®é–“ã§ã¯è‡ªå‹•å¤‰æ›ãŒè¡Œã‚ã‚Œã€1 == 1.0ã¯trueã«ãªã‚Šã¾ã™ã€‚ 自作ã®ã‚¯ãƒ©ã‚¹ã®ã‚ªãƒ–ジェクトã©ã†ã—ã‚’ ==ã§æ¯”較ã—ãŸã„ã¨ãã¯ã€==メソッドを定義ã—ã¾ã™ã€‚==を定義ã—ãªã„ã¨ã€equal?ã¨åŒã˜ã「åŒã˜ã‚ªãƒ–ジェクトã‹ã©ã†ã‹ã€ã«ãªã‚Šã¾ã™ã€‚ == equal? 常ã«ã€ŒåŒã˜ã‚ªãƒ–ジェクトã‹ã©ã†ã‹ã€ã‚’調ã¹ã‚‹ã®ã«ä½¿ã„ã¾ã™ã€‚自作ã®ã‚¯ãƒ©ã‚¹ã§equal?を定義ã—ã¦ã¯ã„ã‘ã¾ã›ã‚“（定義ã§ãã¦ã—ã¾ã„ã¾ã™ãŒï¼‰ã€‚ Javaã§ã¯ã€Stringãªã©ã®equalsメソッドã¯ã€ŒåŒã˜å†…容ã‹ã©ã†ã‹ã€ã‚’調ã¹ã‚‹ã‚‚ã®ã§ã€Rubyã¨é€†ã§ã™ã€‚ equal? ===
Mass Assignment
Mass Assignment 以下ã€Ruby on Rails Guidesã«æŽ²è¼‰ã•ã‚ŒãŸã‚»ã‚ュリティã«é–¢ã™ã‚‹è¨˜äº‹ã®ä¸€éƒ¨ã®æ—¥æœ¬èªžè¨³ã§ã™ã€‚ 6 Mass Assignment ãªã‚“ã®äºˆé˜²æŽªç½®ã‚‚ãªã‘ã‚Œã°ã€Model.new(params[:model])ã¯ãƒãƒƒã‚«ãƒ¼ãŒã©ã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã«ã‚‚カラムã®å€¤ã‚’セットã™ã‚‹ã®ã‚’許ã—ã¦ã—ã¾ã†ã€‚ Mass assignmentã®ç‰¹å¾´ã¯ã€æ”»æ’ƒè€…ãŒmodelã®new()メソッドã«æ¸¡ã™ãƒãƒƒã‚·ãƒ¥ã‚’æ“作ã™ã‚‹ã“ã¨ã§ã©ã‚“ãªãƒ¢ãƒ‡ãƒ«ã®attributesã§ã‚‚セットã™ã‚‹ã“ã¨ã‚’許ã—ã¦ã—ã¾ã†ãŸã‚ã€å•é¡Œã¨ãªã‚‹ã‹ã‚‚ã—ã‚Œãªã„。 def signup params[:user] #=> {:name => "ow3ned", :admin => true} @user = User.new(params[:user]) end Mass assignmentã¯å¤šãã®ä½œæ¥ã‚’çœã。ãªãœãªã‚‰ã€ãã‚Œãžã‚Œ
Gray Soft / Not Found
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知ã£ã¦å¾—ã™ã‚‹21ã®Rubyã®ãƒˆãƒªãƒ“ã‚¢ãªè¨˜æ³• ~ 21 Trivia Notations you should know in Ruby - hp12c
ブãƒã‚°ã‚’下記ã«ç§»è»¢ã—ã¾ã—ãŸã€‚デザイン変更ã«ã‚ˆã‚Šç§»è»¢å…ˆã§ã¯è¨˜äº‹ãŒä¸€å±¤èªã¿ã‚„ã™ããªã£ã¦ã„ã¾ã™ã®ã§ã€ã‚ˆã‚ã—ã‘ã‚Œã°ç§»å‹•ã‚’ãŠé¡˜ã„致ã—ã¾ã™ã€‚ 知ã£ã¦å¾—ã™ã‚‹21ã®Rubyã®ãƒˆãƒªãƒ“ã‚¢ãªè¨˜æ³•: melborne.github.com - ã¡ã‚‡ã£ã¨ãƒˆãƒªãƒ“ã‚¢ã ã‘㩠知ã£ã¦ã„ã‚‹ã¨æ„外ã¨ä¾¿åˆ©ãªRubyã®è¨˜æ³•ã‚’ 21個拾ã£ã¦ã¿ãŸã‚ˆ(Ruby1.9é™å®š) å›ãªã‚‰å…¨éƒ¨çŸ¥ã£ã¦ã‚‹ã‹ã‚‚ã—ã‚Œãªã„ã‘ã©.. 1. 動的継承 Rubyã®ã‚¯ãƒ©ã‚¹ç¶™æ‰¿ã§ã¯ < 記å·ã®å³è¾ºã« クラス定数ã ã‘ã§ãªãクラスを返ã™å¼ãŒæ›¸ã‘るよ class Male def laugh; 'Ha ha ha!' end end class Female def laugh; 'Fu fu fu..' end end class Me < [Male, Female][rand 2] end Me.superclass # => Female Me.new.laugh
Tiltã¨UnboundMethod#bind - やゆã
テンプレートエンジンを抽象化ã™ã‚‹ãƒ©ã‚¤ãƒ–ラリTiltã§ã¯ã‚ªãƒ–ジェクトを渡ã™ã¨ãã®ã‚¹ã‚³ãƒ¼ãƒ—ãŒå–å¾—ã§ãã¾ã™ï¼Ž ã“ã‚Œã¯Rubyçš„ã«ã¯ã™ã”ã謎ã§ãã‚“ãªæ–¹æ³•ã‚ã£ãŸã£ã‘？ ã¨Tiltã®ã‚½ãƒ¼ã‚¹ã‚’èªã‚“ã ら戦慄ã—ã¾ã—ãŸï¼Ž UnboundMethod#bind(obj) ã¨ã„ã†ã‚¯ãƒ©ã‚¹ã¨ãƒ¡ã‚½ãƒƒãƒ‰ãŒã‚ã‚‹ 例ãˆã° s = Numeric.instance_method(:to_s) ã§ã€ŒNumeric#to_sã€ã¨ã„ã†UnboundMethodã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã‚’å–り出ã™ã“ã¨ãŒã§ã，s.bind(1) ã§Numeric(を継承ã—ãŸInteger)ã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã§ã‚る「aã€ã«sã‚’bindã§ãる． s = Numeric.instance_method(:to_s) s.bind(1).call #=> "#<Fixnum:0x00000000000003>" 1.to_s #=> "1" ã¨é€šå¸¸ã®to_sã¨ç•°ãªã‚‹å€¤ãŒè¿”ã£ã¦
Fixtureã‹ã‚‰FactoryGirl㸠: Figure out!! -ドリコムエンジニアブãƒã‚°
Fixture suck! ã¨è¨€ã‚ã‚Œã¦ä¹…ã—ã„ã§ã™ã。ã“ã‚“ã«ã¡ã¯ï¼ onk ã§ã™ã€‚ 最近㯠Rails 3.0 ã§ã‚½ãƒ¼ã‚·ãƒ£ãƒ«ã‚¢ãƒ—リを作ã£ã¦ã„ã¾ã™ã€‚ã§ï¼ŒBDD ã« RSpec 2.0 ＆ FactoryGirl を使ã„出ã—ãŸã®ã§ FactoryGirl ã«ã¤ã„ã¦ã”紹介。 define ã¾ãšï¼ŒFactoryGirl 㯠ActiveRecord ã«ä¾å˜ã—ã¦ã„ã¾ã™ã€‚factory ã®å®šç¾©ã¯ AR ã®ãƒ¢ãƒ‡ãƒ«å˜ä½ã€‚ Factory.define :onk, :class => User do |user| user.name "onk" user.email "[email protected]" end ãŸã¨ãˆã°ã“ã‚“ãªæ„Ÿã˜ã§ã™ã。 create / build 定義ã—㟠factory を使ã†ã¨ã㯠Factory.create(:onk) #=> #<User id: 1, name: "onk",
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ruby ã¯å¤‰æ•°ã«æŽ¥é 辞ãŒãªã„ã‹ã‚‰ã€perl 㧠$obj->$method() ã¿ãŸã„ãªã“ã¨ã‚„ã‚‹ã®ã«ã©ã†ã—ãŸã‚‰ã„ã„ã‚“ã ã‚ã€ã¨ã‹æ€ã£ã¦ãŸã‚‰ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªž Ruby ã«å‡ºã¦ããŸã€‚ Object ã« send ã£ã¦ãƒ¡ã‚½ãƒƒãƒ‰ãŒã‚ã£ã¦ã€o.send :method_name ã§å‘¼ã³å‡ºã›ã‚‹ã€‚ perl ã®ã“ã®ã‚³ãƒ¼ãƒ‰ã¯ my $hoge = Hoge->new; foreach my $method ( qw/one two three/ ) { print $hoge->$method() . "\n"; } package Hoge; sub new { bless {}, shift; } sub one { 1 } sub two { 2 } sub three { 3 } ruby ã§æ›¸ãã¨ã“ã‚“ãªæ„Ÿã˜ class Hoge def one; 1; end def two; 2; end
Ruby技術者èªå®šè©¦é¨“
改訂ã®ãŠçŸ¥ã‚‰ã› 2022å¹´10月3日よりRuby 3ã«å¯¾å¿œã—ãŸRuby技術者èªå®šè©¦é¨“ã®é…信を開始ã—ã¾ã—ãŸã€‚詳細ã¯ãƒ‹ãƒ¥ãƒ¼ã‚¹ã‚’ã”å‚ç…§ãã ã•ã„。version 2.1ã®è©¦é¨“ã«ã¤ã„ã¦ã¯æ—§è©¦é¨“ページをã”å‚ç…§ãã ã•ã„。 Ruby技術者èªå®šè©¦é¨“ã«ã¤ã„㦠Ruby技術者èªå®šè©¦é¨“制度ã¯ã€Rubyベースã®ã‚·ã‚¹ãƒ†ãƒ ã‚’è¨è¨ˆã€é–‹ç™ºã€é‹ç”¨ã™ã‚‹ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã€Rubyã§ã‚·ã‚¹ãƒ†ãƒ æ案を行ã†ã‚³ãƒ³ã‚µãƒ«ã‚¿ãƒ³ãƒˆã€Rubyã‚’æ•™ãˆã‚‹è¬›å¸«åŠã³Rubyã‚’å¦ã¶å¦ç”Ÿãªã©ã‚’対象ã¨ã—ãŸèªå®šè©¦é¨“制度ã§ã™ã€‚èªå®šè€…ã¯ã€Ruby技術者ã¨ã—ã¦ã®æŠ€è¡“力を公æ£ã«è©•ä¾¡ã•ã‚Œã€é«˜ã„水準ã®Rubyã«ã‚ˆã‚‹ã‚·ã‚¹ãƒ†ãƒ 開発能力をæŒã¤ã“ã¨ã‚’èªå®šã•ã‚Œã¾ã™ã€‚ èªå®šã«ã‚ˆã‚ŠRubyベースã§ã‚·ã‚¹ãƒ†ãƒ 開発を行ã†ã†ãˆã§å¿…è¦ãªåŸºç¤Žçš„ãªçŸ¥è˜ã¨å¿œç”¨åŠ›ã‚’ã‚‚ã¤ã“ã¨ã‚’アピールã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚試験ã®åˆæ ¼è€…ã¯ã€Rubyアソシエーションã«ã‚ˆã‚Šã€Œ Ruby Association Certified Ruby
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# encoding: UTF-8 str = "Hello" if str == "Hello" then puts("æ–‡å—列ã¯Helloã§ã™") else puts("æ–‡å—列ã¯Helloã§ã¯ã‚ã‚Šã¾ã›ã‚“") end ã“ã®ã‚µãƒ³ãƒ—ルã§ã¯å¤‰æ•°ã«æ ¼ç´ã•ã‚ŒãŸæ–‡å—列ã¨ã€ŒHelloã€ã¨è¨€ã†æ–‡å—列ãŒå®Œå…¨ã«ä¸€è‡´ã—ã¾ã™ã®ã§ã€Œæ–‡å—列ã¯Helloã§ã™ã€ãŒå‡ºåŠ›ã•ã‚Œã¾ã™ã€‚ ã“ã®ã‚ˆã†ã«å®Œå…¨ã«ä¸€è‡´ã—ã¦ã„ã‚‹ã‹ã©ã†ã‹ã‚’調ã¹ã‚‹ã ã‘ãªã‚‰ã° == メソッドを使ã†ã“ã¨ã§åˆ¤å®šãŒã§ãã¾ã™ã€‚ã§ã¯æ¬¡ã«å¯¾è±¡ã®æ–‡å—列ã«ã€Œeã€ã§å§‹ã¾ã‚Šã€Œoã€ã§çµ‚ã‚ã‚‹æ–‡å—列ãŒå«ã¾ã‚Œã¦ã„ã‚‹ã‹ã©ã†ã‹ã‚’調ã¹ã‚‹ã«ã¯ã©ã†ã™ã‚Œã°ã„ã„ã§ã—ょã†ã‹ã€‚ ã“ã®ã‚ˆã†ãªæ¡ä»¶ã§ã™ã¨ã€ä¸€è‡´ã™ã‚‹æ–‡å—列ã¯æ•°é™ã‚Šãªãå˜åœ¨ã—ã¾ã™ã€‚例ãˆã°æ¬¡ã®ã‚ˆã†ãªæ–‡å—列ã«ä¸€è‡´ã—ã¾ã™ã€‚
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Merge two ActiveRecord arrays and order by created_at
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