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copied!<p>What a coincidence. <a href="http://www.rubyflow.com/" rel="nofollow noreferrer">Rubyflow</a> just yesterday announced the <a href="http://irb.tools/" rel="nofollow noreferrer">irbtools</a> gem, which is a meta-gem containing lots of cool irb enhancement gems. It contains:</p> <ul> <li>Colorized and output as comment by <code>wirb</code> and <code>fancy_irb</code></li> <li>Nice IRB prompt and IRB’s auto indention</li> <li>Includes stdlib’s FileUtils: <code>ls</code>, <code>cd</code>, <code>pwd</code>, <code>ln_s</code>, <code>rm</code>, <code>mkdir</code>, <code>touch</code>, <code>cat</code></li> <li>Many debugging helpers: <code>ap</code>, <code>q</code>, <code>o</code>, <code>c</code>, <code>y</code>, <code>Object#m</code>, <code>Object#d</code> <ul> <li><code>ap</code> – awesome_print</li> <li><code>q</code> – like <code>p</code>, but on one line</li> <li><code>Object#m</code> – ordered method list (takes integer parameter: level of nesting)</li> <li><code>Object#d</code> – puts the object, returns self (using <code>tap</code>)</li> </ul></li> <li>“Magical” information constants: <code>Info, OS, RubyVersion, RubyEngine</code> <ul> <li><code>OS.windows?</code></li> <li><code>RubyEngine.jruby?</code></li> <li><code>RubyVersion.is.at_least? 1.9</code></li> </ul></li> <li>Clipboard features: <code>copy</code> and <code>paste</code> <ul> <li>also available: <code>copy_input</code> and <code>copy_output</code> for session history</li> </ul></li> <li>Call <code>vim</code> (or another supported editor) to edit a file, close it and it gets loaded into your current irb session, powered by <code>interactive_editor</code></li> <li>Another way of live loading into irb: sketches</li> <li>Highlight a string with <code>olorize('string')</code> or a file with <code>ray('path')</code>, powered by coderay</li> <li>Displays ActiveRecord database entries as tables with <code>hirb</code></li> <li>Restart <code>irb</code> with <code>reset!</code> or change the Ruby version with the <code>use</code> method and <code>rvm!</code></li> <li>Includes the current directory in the load path (was removed in 1.9.2 for security reasons, but is pretty annoying in IRB)</li> <li>Shorter requiring like this: <code>rq:mathn</code></li> <li>And rerquiring with <code>rrq</code></li> <li>Try the included <code>Object#ri</code> helper, powered by <code>ori</code>!</li> <li>Access to a lot of more commands with <code>boson</code> – call commands to get started</li> </ul> <p>There are nice screenshots on the <a href="http://irb.tools/" rel="nofollow noreferrer">irbtools</a> page. One nice thing about it is that each of the utilities can stand on its own, in case you just want to cherry-pick one or two features.</p> <p><strong>2013 Update</strong></p> <p>Since I wrote this, <a href="http://pryrepl.org/" rel="nofollow noreferrer">Pry</a> has become a popular IRB replacement. It doesn't do as much as <code>irbtools</code> out of the box, but it extensible with plugin gems that add cool features. You can browse source code like it was a unix directory:</p> <pre><code>pry(main)> cd FileUtils pry(FileUtils):1> show-method rm From: /opt/ruby/lib/ruby/1.9.1/fileutils.rb @ line 556: Number of lines: 10 Owner: FileUtils def rm(list, options = {}) fu_check_options options, OPT_TABLE['rm'] list = fu_list(list) fu_output_message "rm#{options[:force] ? ' -f' : ''} #{list.join ' '}" if options[:verbose] return if options[:noop] list.each do |path| remove_file path, options[:force] end end pry(FileUtils):2> </code></pre> <p>You can also browse Ruby documentation, issue shell commands, and if you're a Rails user, you can use the <code>pry-rails</code> gem to get pry in your Rails console. There's also a way to hook it into Sinatra and use it with Heroku. </p> <p>There's ample documentation--there are a bunch of screencasts including a Railscast. It's definitely worth looking into.</p>

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