Ryuta Kamizono 2b5dacb43d Change timestamp_attributes_for_{create,update} from symbol to string ... `timestamp_attributes_for_{create,update}` is defined as symbol but always used as string with `to_s`. This allocates extra strings. To avoid extra allocation, change the definitions from symbol to string. ```ruby pp ObjectSpace::AllocationTracer.trace { 1_000.times { |i| Post.create! } } ``` Before: ``` ["~/rails/activerecord/lib/active_record/timestamp.rb", 121]=>[1002, 0, 750, 0, 1, 18528], ["~/rails/activerecord/lib/active_record/timestamp.rb", 105]=>[1002, 0, 750, 0, 1, 7720], ["~/rails/activerecord/lib/active_record/timestamp.rb", 101]=>[1002, 0, 750, 0, 1, 7720], ["~/rails/activerecord/lib/active_record/timestamp.rb", 109]=>[1002, 0, 750, 0, 1, 13896], ["~/rails/activerecord/lib/active_record/timestamp.rb", 61]=>[4008, 0, 3000, 0, 1, 30880], ``` After: ``` ["~/rails/activerecord/lib/active_record/timestamp.rb", 120]=>[1000, 0, 756, 0, 1, 17184], ["~/rails/activerecord/lib/active_record/timestamp.rb", 104]=>[1000, 0, 756, 0, 1, 7160], ["~/rails/activerecord/lib/active_record/timestamp.rb", 100]=>[1000, 0, 756, 0, 1, 7160], ["~/rails/activerecord/lib/active_record/timestamp.rb", 108]=>[1000, 0, 756, 0, 1, 12888], ```		2017-01-01 07:07:45 +09:00
..
active_record/connection_adapters	Add more rubocop rules about whitespaces	2016-10-29 01:17:49 -02:00
assets	Use YAML to serialize schema cache	2016-11-27 22:09:58 -05:00
cases	Change timestamp_attributes_for_{create,update} from symbol to string	2017-01-01 07:07:45 +09:00
fixtures	fix #create_fixtures when equal table names in different databases	2016-12-21 11:09:29 +01:00
migrations	modernizes hash syntax in activerecord	2016-08-06 19:37:57 +02:00
models	Should not update children when the parent creation with no reason	2016-12-29 16:24:57 +09:00
schema	Should not update children when the parent creation with no reason	2016-12-29 16:24:57 +09:00
support	fix #create_fixtures when equal table names in different databases	2016-12-21 11:09:29 +01:00
.gitignore
config.example.yml	Fix tests for prepared_statements: false and queries hitting #select_all	2016-11-19 21:52:52 +05:30
config.rb