PERF: avoid allocating column names where possible

When requesting columns names from database adapters AR:Result
would dup/freeze column names, this prefers using fstrings which
cuts down on repeat allocations

Attributes that are retained keep these fstrings around for the long
term

Note, this has the highest impact on "short" result sets, eg: Topic.first where you can void allocating the number of columns * String.

1 files changed, 1 insertions, 1 deletions

diff --git a/activemodel/lib/active_model/attributes.rb b/activemodel/lib/active_model/attributes.rb
index 7d44f7f2a3..5bf213d593 100644
--- a/activemodel/lib/active_model/attributes.rb
+++ b/activemodel/lib/active_model/attributes.rb
@@ -103,7 +103,7 @@ module ActiveModel
       def self.set_name_cache(name, value)
         const_name = "ATTR_#{name}"
         unless const_defined? const_name
-          const_set const_name, value.dup.freeze
+          const_set const_name, -value
         end
       end
     }