method

singleton_class?

Ruby on Rails latest stable (v7.1.3.2) - 0 notes - Class: Class

Method deprecated or moved

This method is deprecated or moved on the latest stable version. The last existing version (v4.2.9) is shown here.

singleton_class?() private

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# File activesupport/lib/active_support/core_ext/class/attribute.rb, line 123
      def singleton_class?
        ancestors.first != self
      end