<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>subscribe (Publisher)</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <link rel="stylesheet" href="../.././rdoc-style.css" type="text/css" media="screen" /> </head> <body class="standalone-code"> <pre><span class="ruby-comment cmt"># File lib/utility/publisher.rb, line 30</span> <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">subscribe</span>(<span class="ruby-identifier">subscriber</span>) <span class="ruby-ivar">@subscribers</span> <span class="ruby-operator">||=</span> [] <span class="ruby-keyword kw">if</span> <span class="ruby-operator">!</span><span class="ruby-identifier">subscriber</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-identifier">:to_int</span>) <span class="ruby-operator">&&</span> <span class="ruby-operator">!</span><span class="ruby-identifier">subscriber</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-identifier">:update</span>) <span class="ruby-identifier">raise</span> <span class="ruby-constant">NoMethodError</span>, <span class="ruby-value str">"subscriber needs to respond to 'update'"</span> <span class="ruby-keyword kw">end</span> <span class="ruby-ivar">@subscribers</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">subscriber</span> <span class="ruby-keyword kw">end</span></pre> </body> </html>