The Ruby C API
Before You Start For the greatest chance of success with this guide, I recommend being fairly comfortable with C and very comfortable with Ruby. Using Ruby’s C API does not require any advanced C concepts, however the API is huge and largely undocumented. After you start using it, you will likely find yourself delving through the Ruby source code at some point to figure out the behavior of some ob
Effective Ruby
A book from the Effective Software Development Series, written by Peter J. Jones. Practical advice for intermediate Ruby programmers, split into 48 actionable items. Kick bad habits from other languages and embrace the Ruby way of doing things. Expert guidance on Ruby internals such as the hidden inheritance hierarchy and the generational garbage collector in Ruby 2.1. Buy the book at InformIT.com
What is the difference between a block, a proc, and a lambda in ruby? - Build, Break, Learn.
What are blocks, procs, and lambdas? Coder Talk: Examples of closures in ruby. Plain old english: Ways of grouping code we want to run. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 # Block Examples [1,2,3].each { |x| puts x*2 } # block is in between the curly braces [1,2,3].each do |x| puts x*2 # block is everything between the do and end end # Proc Examples p = Proc.new { |x| puts x*2 }
Anemone - Ruby Web-Spider Framework
An easy-to-use Ruby web spider framework What is it? Anemone is a Ruby library that makes it quick and painless to write programs that spider a website. It provides a simple DSL for performing actions on every page of a site, skipping certain URLs, and calculating the shortest path to a given page on a site. The multi-threaded design makes Anemone fast. The API makes it simple. And the expressive
mecab-rubyã‚’Macã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ãƒ¡ãƒ¢ | インサイドフラッギング
2012å¹´9月13日木曜日 mecab-rubyã‚’Macã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ãƒ¡ãƒ¢ mecab-rubyã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ãŒã™ã‚“ãªã‚Šã§ããŸã“ã¨ã¯ä¸€åº¦ã‚‚ãªã„よã†ãªæ°—ãŒã™ã‚‹ã€‚今回ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯0.994ã ã‘ã©ã€ã¾ãŸã‚¨ãƒ©ãƒ¼ãŒèµ·ããŸã®ã§è§£æ±ºæ–¹æ³•ã‚’メモã—ã¦ãŠãã“ã¨ã«ã™ã‚‹ã€‚ã¡ãªã¿ã«ã€MeCab本体ã¯Homebrewã§ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã—ã¦ã‚る。 mecab-rubyã®gemã¯RubyGems.orgã«ãƒ›ã‚¹ãƒˆã•ã‚Œã¦ã„ãªã„ã®ã§ã€è‡ªåˆ†ã§ã‚½ãƒ¼ã‚¹ã‹ã‚‰ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹å¿…è¦ãŒã‚る。ã¨è¨€ã£ã¦ã‚‚ã€gemspecãŒå«ã¾ã‚Œã¦ã„ã‚‹ã®ã§ã€æ¬¡ã®ã‚ˆã†ã«ã—ã¦gemã‹ã‚‰ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ã“ã¨ãŒã§ãる。 $ nano mecab-ruby.gemspec # ãƒãƒ¼ã‚¸ãƒ§ãƒ³ãŒ0.99ã«ãªã£ã¦ã„ã‚‹ã®ã§0.994ã«å¤‰æ›´ $ gem build mecab-ruby.gemspec $ gem install mecab-ruby-0.994.gem 続ã„ã¦ãƒ†ã‚¹
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gem install libv8 --version '3.11.8.17' on ruby (windows)
The problem is as following. Error installing libv8: ERROR: Failed to build gem native extension. D:/Ruby193/bin/ruby.exe extconf.rb creating Makefile The system can not find the specified path D:Ruby193/lib/ruby/gems/1.9.1/gems/libv8-3.11.8.17/ext/libv8/builder.rb:49:in'setup_python!':libv8 requires python 2 to be installed in order to build,but it is currently not available (RuntimeError) from D
uu59ã®ãƒ¡ãƒ¢ | Rubyã®autoloadã¯ã„ãšã‚Œãªããªã‚‹ã®ã§ä½¿ã†ã®ã‚’é¿ã‘よã†
simplecovãŒautoloadã•ã‚Œã¦ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ã®ã‚«ãƒãƒ¬ãƒƒã‚¸ã‚’å–å¾—ã—ã¦ãã‚Œãªã„ã®ã§èª¿ã¹ã¦ãŸã‚‰è¦‹ã¤ã‘ãŸã€‚ rspecも絡むã—実際ã®å‹•ä½œã‚’追ã†ã¨ã‚„ã‚„ã“ã—ã„ã®ã§å•é¡Œã‚’手ã£å–ã‚Šæ—©ãã„ãˆã°ã€module A; autoload :B, "a/b"; endãªãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«Aã¨B(a.rbã¨a/b.rb)ãŒã‚ã‚‹ã¨ãã€SimpleCov.startã—ãŸã‚ã¨ã§require a/bã¨ã‹A::Bã®ã‚ˆã†ã«æ˜Žç¤ºçš„ã«å‚ç…§ã—ã¦ã‚ã’ãªã„ã¨ã€specã®å®Ÿè¡Œä¸ã«Bã‚’å‚ç…§ã—ã¦ã¦ã‚‚b.rbã®ã‚«ãƒãƒ¬ãƒƒã‚¸ãŒå–å¾—ã•ã‚Œãªã„。 ã“ã‚ŒãŒrspecã®å•é¡Œãªã®ã‹æ¨™æº–ライブラリcoverageã®å•é¡Œãªã®ã‹autoloadã®å•é¡Œãªã®ã‹ã¯èª¿ã¹ã¦ãªã„ã‘ã©ã€ãã‚‚ãã‚‚autoloadã¯å°†æ¥çš„ã«ãªããªã‚‹ã‚‰ã—ãç¾åœ¨Matzã®å·ä»¤ã®ã‚‚ã¨æ¨™æº–ライブラリã‹ã‚‰ã®é™¤åŽ»ãŒé€²ã‚“ã§ã„るもよã†ã€‚ ã¨ã„ã†ã‚ã‘ã§autoloadを使ã‚ãšãƒ™ã‚¿ã«requireã™ã‚‹ã“ã¨ã§ã‚«ãƒãƒ¬ãƒƒã‚¸ãŒ
Ruby: String#scrub ã®è¿½åŠ 㨠String#encode ã®æ”¹å–„
Ruby: String#scrub ã®è¿½åŠ 㨠String#encode ã®æ”¹å–„Ruby: Unicode æ£è¦åŒ–ã‚’è¡Œã†Ruby: UTF-8-MAC(UTF-8-HFS) ã‚’ UTF-8 (NFC) ã«å¤‰æ›ã™ã‚‹Ruby: æ›¸è¨˜ç´ ã‚¯ãƒ©ã‚¹ã‚¿ãƒ¼ã‚’è€ƒæ…®ã—ã¦æ–‡å—数を求ã‚ã‚‹Ruby: æ£è¦è¡¨ç¾ã® Unicode プãƒãƒ‘ティã«ãƒžãƒƒãƒã™ã‚‹æ–‡å—を列挙ã™ã‚‹ Ruby 2.1.0 㧠ä¸æ£ãªãƒã‚¤ãƒˆåˆ—を代替文å—ã«ç½®ãæ›ãˆã‚‹ String#scrub メソッドãŒè¿½åŠ ã•ã‚ŒãŸã€‚ã¾ãŸ String#encode を使ã†å ´åˆã€ã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã®æŒ‡å®šã‚’1ã¤ã ã‘ã§ã™ã‚€ã‚ˆã†ã«ãªã£ãŸã€‚ str = "\x80\x80\x80" p [ "\xEF\xBF\xBD"+"\xEF\xBF\xBD"+"\xEF\xBF\xBD" == str.encode("UTF-8", invalid: :replace), "\xEF\xBF
Rubyã®ã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚° - tmtms ã®ãƒ¡ãƒ¢
Ruby 1.9 ã‹ã‚‰æ–‡å—列やæ£è¦è¡¨ç¾ã‚ªãƒ–ジェクトã¯ãã‚Œãžã‚Œã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°(ã„ã‚ゆる文å—コード)ã‚’ä¿æŒã™ã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã—ãŸã€‚ ãŸã¨ãˆã° 0xB1 0xB2 ã¨ã„ã†ï¼’ãƒã‚¤ãƒˆã¯ EUC-JP エンコーディングã§ã¯ã€Œæ¸¦ã€ã€SHIFT_JIS エンコーディングã§ã¯ã€Œï½±ï½²ã€ã¨ã„ã†æ–‡å—ã«ãªã‚Šã¾ã™ã€‚ã¤ã¾ã‚ŠåŒã˜ãƒã‚¤ãƒˆåˆ—ã§ã‚‚エンコーディングãŒç•°ãªã‚Œã°ç•°ãªã‚‹æ–‡å—ã¨ã—ã¦è§£é‡ˆã•ã‚Œã¾ã™ã€‚ 1.8 ã§ã¯æ–‡å—列ã¯ãŸã ã®ãƒã‚¤ãƒˆåˆ—ã§ã—ãŸã€‚ãªã®ã§ã€ãã‚ŒãŒã©ã®ã‚ˆã†ãªæ–‡å—を表ã—ã¦ã„ã‚‹ã®ã‹ã€ã¤ã¾ã‚Šã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ãŒä½•ãªã®ã‹ã¯ãƒ—ãƒã‚°ãƒ©ãƒ ãŒçŸ¥ã£ã¦ã„ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã—ãŸã€‚ 1.9 ã§ã¯æ–‡å—列オブジェクト自身ãŒè‡ªåˆ†ãŒä½•ã®ã‚¨ãƒ³ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã‹ã‚’知ã£ã¦ã„ã¾ã™ã€‚åŒã˜ 0xB1 0xB2 ã¨ã„ã†ãƒã‚¤ãƒˆåˆ—ã§ã‚‚ã€ãれ㌠EUC-JP ã®ã€Œæ¸¦ã€ãªã®ã‹ SHIFT_JIS ã®ã€Œï½±ï½²ã€ãªã®ã‹ã¯ã€æ–‡å—列自身ãŒçŸ¥ã£ã¦ã„ã¾ã™ã€‚ スクリプトエンコーディング スクリプ
Module#prepend
4. Module#prepend 2013/03/01　シナジーマーケティング(æ ª)　寺岡 佑起 [Ruby 2.0] 第4ç« Module#prepend 4.1. Module#prependã¨ã¯ 4.2. prependã¨includeã®é•ã„ 4.3. モジュールã®ä»•çµ„ã¿ 4.4. モンã‚ーパッãƒã«åˆ©ç”¨ã™ã‚‹ 4.5. ã¾ã¨ã‚ 4.1. Module#prependã¨ã¯ Ruby2.0ã§è¿½åŠ ã•ã‚ŒãŸModule#prependã¯ã€Module#includeã¨éžå¸¸ã«ã‚ˆãä¼¼ãŸæ©Ÿèƒ½ã§ã™ã€‚ Module#prependを使ã†ã¨æ—¢å˜ã®ã‚¯ãƒ©ã‚¹ã®å‡¦ç†ã‚’変更ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ Module#prependã§ãƒ¡ã‚½ãƒƒãƒ‰ã‚’è¿½åŠ ã™ã‚‹ prependを利用ã™ã‚‹ã®ã«ç‰¹ã«é›£ã—ã„ã“ã¨ã¯å¿…è¦ã‚ã‚Šã¾ã›ã‚“。 以下ã®ã‚ˆã†ã«prependã«ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚’指定ã™ã‚‹ã ã‘ã§ã™ã€‚ module Greeting def greet
OpenSSLエラー Certificate Verify Failed[RVMエラー][Rails][Macé™å®š] - é…’ã¨æ³ªã¨Rubyã¨Railsã¨
OpenSSLエラー Certificate Verify Failed[RVMエラー][Rails][Macé™å®š] Jun 21st, 2013 Tweet
Problem in accessing bucket of my AWS S3 account
I tried to establish connection to my aws s3 account like this in my irb console - AWS::S3::Base.establish_connection!(:access_key_id => 'my access key', :secret_access_key => 'my secret key', :server => "s3-ap-southeast-1.amazonaws.com") And it works well and prompt this - => #<AWS::S3::Connection:0x8cd86d0 @options={:server=>"s3-ap-southeast-1.amazonaws.com", :port=>80, :access_key_id=>"my acces
Getting the Hostname or IP in Ruby on Rails
I'm in the process of maintaining a Ruby on Rails app and am looking for an easy way to find the hostname or IP address of the box I'm on (since it's a VM and new instances may have different hostnames or IP addresses). Is there a quick and easy way to do this in Ruby on Rails? Edit: The answer below is correct but the clarification Craig provided is useful (see also provided link in answer): The
Ruby Geocoder
Complete Ruby geocoding solution. easy to use • supports Ruby 2.x and JRuby • compatible with ActiveRecord, Mongoid, MongoMapper • result caching • proxy support • multi-lingual • Nominatim, Google, Bing, Yandex, MaxMind, and more • works with Rails, Sinatra, any Rack framework • command line interface
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