小试验，关于Ruby类的祖先链

对于理解Ruby的方法查找过程，祖先链概念非常重要，相同模块在原祖先链的类中多次混入时，新祖先链如何呢，做了一个小试验：

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module M; endmodule M1; endmodule M2; endclass MyClass  include M  include M1endclass MySubClass < MyClass  include M  include M2endobj = MySubClass.newputs obj.class.ancestors()puts "\n\n\n"puts BasicObject.superclass==nildef my_ancestors(current_class)  a = []  a.push current_class  sc = current_class.superclass  until sc==nil    a.push sc    sc = sc.superclass  end  aendputs my_ancestors(obj.class)