Freeze default options to avoid useless new hash allocations

ismasan · Sep 1, 2020 · 5393636 · 5393636
1 parent 3ead0ea
commit 5393636
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/lib/hash_mapper.rb b/lib/hash_mapper.rb
@@ -39,6 +39,7 @@ def inject_with_index(injected)
 end
 
 module HashMapper
+  DEFAULT_OPTIONS = {}.freeze
 
   def self.extended(base)
     base.class_eval do
@@ -73,11 +74,11 @@ def using(mapper_class)
     { using: mapper_class }
   end
 
-  def normalize(a_hash, options: {})
+  def normalize(a_hash, options: DEFAULT_OPTIONS)
     perform_hash_mapping a_hash, :normalize, options
   end
 
-  def denormalize(a_hash, options: {})
+  def denormalize(a_hash, options: DEFAULT_OPTIONS)
     perform_hash_mapping a_hash, :denormalize, options
   end