lib/sugar-high/hash.rb in sugar-high-0.2.8 vs lib/sugar-high/hash.rb in sugar-high-0.2.9

@@ -1,7 +1,18 @@
+require 'sugar-high/arguments'
+
 class Hash
   def hash_revert
     r = Hash.new {|h,k| h[k] = []}
     each {|k,v| r[v] << k}
     r
+  end 
+  
+  def try_keys *keys
+    option = last_option keys
+    keys.flatten.each do |key| 
+      return self[key] if self[key]
+    end    
+    return option[:default] if option[:default]
+    nil
   end
 end