Added native, faster implementations of .blank? for the core types #2286 [skae]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2319 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

 *SVN*
 
+* Added native, faster implementations of .blank? for the core types #2286 [skae]
+
 * Fixed clean logger to work with Ruby 1.8.3 Logger class #2245
 
 * Fixed memory leak with Active Record classes when Dependencies.mechanism = :load #1704 [c.r.mcgrath@gmail.com]

activesupport/lib/active_support/core_ext/blank.rb

+# The methods here are provided to speed up function blank? in class Object
+class NilClass
+  def blank?
+    true
+  end
+end
+
+class FalseClass
+  def blank?
+    true
+  end
+end
+
+class TrueClass
+  def blank?
+    false
+  end
+end
+
+class Array
+  alias_method :blank?, :empty?
+end
+
+class Hash
+  alias_method :blank?, :empty?
+end
+
+class String
+  def blank?
+    empty? || strip.empty?
+  end
+end
+
+class Numeric
+  alias_method :blank?, :zero?
+end
\ No newline at end of file