lib/cistern/hash.rb in cistern-2.8.0 vs lib/cistern/hash.rb in cistern-2.8.1

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 class Cistern::Hash
   # @example
   #   Cistern::Hash.slice({ :a => 1, :b => 2 }, :a) #=> { :a => 1 }
   # @return [Hash] copy of {#hash} containing only {#keys}
   def self.slice(hash, *keys)