1 files changed, 3 insertions, 7 deletions
diff --git a/activerecord/lib/active_record/attribute_set.rb b/activerecord/lib/active_record/attribute_set.rb
index 5be11e6ab9..8a964fb03c 100644
--- a/activerecord/lib/active_record/attribute_set.rb
+++ b/activerecord/lib/active_record/attribute_set.rb
@@ -13,11 +13,11 @@ module ActiveRecord
     end
 
     def values_before_type_cast
-      attributes.each_with_object({}) { |(k, v), h| h[k] = v.value_before_type_cast }
+      attributes.transform_values(&:value_before_type_cast)
     end
 
     def to_hash
-      initialized_attributes.each_with_object({}) { |(k, v), h| h[k] = v.value }
+      initialized_attributes.transform_values(&:value)
     end
     alias_method :to_h, :to_hash
 
@@ -43,11 +43,7 @@ module ActiveRecord
     end
 
     def initialize_dup(_)
-      @attributes = attributes.dup
-      attributes.each do |key, attr|
-        attributes[key] = attr.dup
-      end
-
+      @attributes = attributes.transform_values(&:dup)
       super
     end