Rails Webrick: Configure what directories are watched for changes

At the moment I'm having to restart the server if I change files in the lib/ and app/helpers/ directories. Is there a way to configure eith开发者_Python百科er Rails or Webrick such that it hotswaps the files in those directories as well?

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In your config/application.rb:

config.autoload_paths += %W(#{config.root}/lib #{config.root}/app/helpers)

There should be a commented line which explains what autoload_paths is for.