Rosetta Code/Count examples: Difference between revisions

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 =={{header|Ruby}}==
 {{libheader|REXML}}
+First, a RosettaCode module, saved as <tt>rosettacode.rb</tt>:
 <lang ruby>require 'open-uri'
 require 'rexml/document'
+module RosettaCode
-def rc_url(page, query)
-  "http://www.rosettacode.org/w/" + page + "?" +
-    URI.escape(query.map {|pair| "%s=%s" % pair}.join("&"))
-end
-def rc_tasks(category)
+  def rc_url(page, query)
+    "http://www.rosettacode.org/w/" + page + "?" +
-  query = {
+      URI.escape(query.map {|pair| "%s=%s" % pair}.join("&"))
-    "action" => "query",
+  end
-    "list" => "categorymembers",
-    "cmtitle" => "Category:#{category}",
-    "format" => "xml",
-    "cmlimit" => 500,
-  }
-  while true
-    url = rc_url "api.php", query
-    doc = REXML::Document.new open(url)
+  def rc_tasks
-    REXML::XPath.each(doc, "//cm") do |task|
+    query = {
-      yield task.attribute("title").value
+      "action" => "query",
-    end
+      "list" => "categorymembers",
+      "cmtitle" => "Category:Programming_Tasks",
+      "format" => "xml",
+      "cmlimit" => 500,
+    }
+    while true
+      url = rc_url "api.php", query
+      doc = REXML::Document.new open(url)
-    continue = REXML::XPath.first(doc, "//query-continue")
+      REXML::XPath.each(doc, "//cm") do |task|
+        yield task.attribute("title").value
-    break if continue.nil?
+      end
-    cm = REXML::XPath.first(continue, "categorymembers")
-    query["cmcontinue"] = cm.attribute("cmcontinue").value
+      continue = REXML::XPath.first(doc, "//query-continue")
+      break if continue.nil?
+      cm = REXML::XPath.first(continue, "categorymembers")
+      query["cmcontinue"] = cm.attribute("cmcontinue").value
+    end
   end
-end
+end</lang>
+Then, we implement the task with:
+<lang ruby>require 'rosettacode'
+include RosettaCode
 total_examples = 0
 rc_tasks("Programming_Tasks") do |task|
-  url = rc_url "index.php", {"action" => "raw", "title" => task}
+  url = rc_url("index.php", {"action" => "raw", "title" => task})
   examples = open(url).read.scan("=={{header").length
-  puts "#{task}: #{examples}"
+  puts "#{task}: #{examples} examples"
   total_examples += examples
 end
 puts
-puts "Total: #{total_examples}"</lang>
+puts "Total: #{total_examples} examples"</lang>
 =={{header|Tcl}}==