expression_resolver.rb in sparkql-1.3.0

- old
+ new

@@ -1,17 +1,16 @@
 # Base class for handling expression resolution
 class Sparkql::ExpressionResolver
-
   # Accepted results from the resolve method:
   # * true and false reflect the expression's boolean result (as all expressions
   #   should).
   # * :drop is a special symbol indicating that the expression should be omitted
   #   from the filter. Special rules apply for a dropped expression, such as
   #   keeping the conjunction of the dropped expression.
-  VALID_RESULTS = [true, false, :drop]
+  VALID_RESULTS = [true, false, :drop].freeze
 
   # Evaluate the result of this expression. Allows for any of the values in
   # VALID_RESULTS
-  def resolve(expression)
+  def resolve(_expression)
     true
   end
 end