Module: Singleton

Included in:
ActiveJob::Serializers::ObjectSerializer, ActiveModel::NullMutationTracker, ActiveSupport::Deprecation, Mime::AllType, Mime::NullType
Defined in:
activesupport/lib/active_support/core_ext/object/duplicable.rb

Instance Method Summary collapse

Instance Method Details

#duplicable?Boolean

Singleton instances are not duplicable:

Class.new.include(Singleton).instance.dup # TypeError (can't dup instance of singleton

Returns:

  • (Boolean)

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# File 'activesupport/lib/active_support/core_ext/object/duplicable.rb', line 57

def duplicable?
  false
end