From f80aa5994603e684e3fecd3f53bfbf242c73a107 Mon Sep 17 00:00:00 2001 From: schneems Date: Fri, 24 Jul 2015 00:46:12 -0500 Subject: Decrease string allocations on AR#respond_to? When a symbol is passed in, we call `to_s` on it which allocates a string. The two hardcoded symbols that are used internally are `:to_partial_path` and `:to_model`. This change buys us 71,136 bytes of memory and 1,777 fewer objects per request. --- activerecord/lib/active_record/attribute_methods.rb | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'activerecord') diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index abe1d465a5..7fb899c242 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -230,7 +230,15 @@ module ActiveRecord # person.respond_to(:nothing) # => false def respond_to?(name, include_private = false) return false unless super - name = name.to_s + + case name + when :to_partial_path + name = "to_partial_path".freeze + when :to_model + name = "to_model".freeze + else + name = name.to_s + end # If the result is true then check for the select case. # For queries selecting a subset of columns, return false for unselected columns. -- cgit v1.2.3