FÌÒòäE駱 E駱block in 駱E駱 descendantsE駱block in descendants駱 E駱 subclassesE駱block in subclassesE駱block (2 levels) in subclassesE駱rescue in E駱ClassE駱 ObjectSpaceE駱NumericE駱kE駱singleton_class?E駱==E駱unshiftE駱singleton_classE駱 each_objectE駱cE駱>E駱any?E駱<