lib/flapjack/utility.rb in flapjack-0.7.2 vs lib/flapjack/utility.rb in flapjack-0.7.3

@@ -50,7 +50,23 @@
       return obj.inject({}){|memo,(k,v)| memo[k.to_sym] =  symbolize(v); memo} if obj.is_a? Hash
       return obj.inject([]){|memo,v    | memo           << symbolize(v); memo} if obj.is_a? Array
       return obj
     end
 
+    # The passed block will be provided each value from the args
+    # and must return array pairs [key, value] representing members of
+    # the hash this method returns. Keys should be unique -- if they're
+    # not, the earlier pair for that key will be overwritten.
+    def hashify(*args, &block)
+      key_value_pairs = args.map {|a| yield(a) }
+
+      # if using Ruby 1.9,
+      #   Hash[ key_value_pairs ]
+      # is all that's needed, but for Ruby 1.8 compatability, these must
+      # be flattened and the resulting array unpacked. flatten(1) only
+      # flattens the arrays constructed in the block, it won't mess up
+      # any values (or keys) that are themselves arrays/hashes.
+      Hash[ *( key_value_pairs.flatten(1) )]
+    end
+
   end
 end