Module: Singleton

Included in:

ActionDispatch::ServerTiming::Subscriber, ActiveJob::Serializers::ObjectSerializer, ActiveModel::NullMutationTracker, Mime::AllType, Mime::NullType

Defined in:

activesupport/lib/active_support/core_ext/object/duplicable.rb

Instance Method Summary

• #duplicable? ⇒ Boolean

  Singleton instances are not duplicable:.

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)

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

def duplicable?
  false
end