ruby列表祖先不是mixins

Question

最好用代码解释....

>> String.ancestors
=> [String, Comparable, Object, Kernel, BasicObject]
>> Comparable.ancestors
=> [Comparable]
>> Object.ancestors
=> [Object, Kernel, BasicObject]
>> Kernel.ancestors
=> [Kernel]
>> BasicObject.ancestors
=> [BasicObject]

所以我怀疑继承链是String <Object <BasicObject ...而Comparable和Kernel是mixins ...

是否有一个函数'foobar'可以显示继承:

>> String.foobar
=> [Object, BasicObject]

如果可能的话,还包括存储单例方法的隐藏元类？

Answer 1

String.ancestors.grep(Class)

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