2018-fumichan-thesis / form-sample / vendor / bundle / ruby / 2.5.0 / gems / concurrent-ruby-1.1.3 / lib / concurrent / constants.rb

module Concurrent

  # Various classes within allows for +nil+ values to be stored,
  # so a special +NULL+ token is required to indicate the "nil-ness".
  # @!visibility private
  NULL = ::Object.new

end