lib/rext/object/helpers.rb in visionmedia-rext-0.2.2 vs lib/rext/object/helpers.rb in visionmedia-rext-0.3.0

@@ -36,6 +36,27 @@
   def returning value, &block
     yield value
     value
   end
   
+  ##
+  # Retry a _block_ of statements upto a number of _times_.
+  # When no error is raised the value returned by _block_ is 
+  # simply returned.
+  #
+  # === Examples
+  #
+  #   try 3 do
+  #     open 'http://vision-media.ca'
+  #   end
+  #   # => allows 3 tries to fetch the response
+  #
+  
+  def try times = 1, options = {}, &block
+    val = yield
+  rescue options[:on] || Exception
+    retry if (times -= 1) > 0
+  else
+    val
+  end
+  
 end
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