method

duplicable?

v7.0.0 - Show latest stable - Class: Singleton

duplicable?()

public

Singleton instances are not duplicable:

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

# File activesupport/lib/active_support/core_ext/object/duplicable.rb, line 57
  def duplicable?
    false
  end