Class: Module

Inherits:
Object
  • Object
show all
Defined in:
lib/metaruby/backward/singleton_class_p.rb

Instance Method Summary collapse

Instance Method Details

#singleton_class? ⇒ Boolean

It so happens that this method to determine whether a class is a singleton class is valid for ruby 2.0 and breaks on 2.1 … However (!) on 2.1 singleton_class? is defined

Returns:

  • (Boolean) 


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# File 'lib/metaruby/backward/singleton_class_p.rb', line 6

def singleton_class?
    if instance_variable_defined?(:@__singleton_class)
        @__singleton_class
    else
        @__singleton_class = (ancestors.first != self)
    end
end