Added Object#blank? -- see http://redhanded.hobix.com/inspect/objectBlank.html...

Added Object#blank? -- see http://redhanded.hobix.com/inspect/objectBlank.html #783 [_why the lucky stiff]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@857 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

 *SVN*
 
+* Added Object#blank? -- see http://redhanded.hobix.com/inspect/objectBlank.html #783 [_why the lucky stiff]
+
 * Added inflection rules for "sh" words, like "wish" and "fish" #755 [phillip@pjbsoftware.com]
 
 * Fixed an exception when using Ajax based requests from Safari because Safari appends a \000 to the post body. Symbols can't have \000 in them so indifferent access would throw an exception in the constructor. Indifferent hashes now use strings internally instead. #746 [Tobias Luetke]

activesupport/lib/active_support/core_ext/object_and_class.rb

@@ -11,6 +11,16 @@ def subclasses_of(superclass)
     end
     subclasses
   end
+
+  def blank?
+    if respond_to? :empty?
+      empty?
+    elsif respond_to? :zero?
+      zero?
+    else
+      !self
+    end
+  end
 end
 
 class Class #:nodoc: