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hadrienblanc/common_mistake.md

Created May 15, 2019 13:11
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common_mistake.md 
class User < ActiveRecord::Base
 def do_something!
   self.my_attr = 123
 end

 def do_another_thing!
   my_attr = 456
 end
end

One method will do something, the other one will do nothing. Why ?

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