Thanks for that. I couldn't figure this one out. But using your suggestion,
I finally get what I expected:
(try (/ 4 0) (catch ArithmeticException e (println (ancestors (type e)))))
#{java.lang.Exception java.lang.Throwable java.lang.RuntimeException
java.lang.Object java.io.Serializable}
On Tuesday, March 7, 2017 at 7:15:07 PM UTC-5, Gary Trakhman wrote:
>
> Turns out ancestors works on the class, not the instance:
> > (ancestors ArithmeticException)
> #{java.lang.Throwable java.io.Serializable java.lang.Exception
> java.lang.RuntimeException java.lang.Object}
>
> > (ancestors (new ArithmeticException))
> nil
>
>
> On Tue, Mar 7, 2017 at 7:05 PM <[email protected] <javascript:>> wrote:
>
>> This gives me nil:
>>
>> (try (/ 4 0) (catch Exception e (println (parents e))))
>>
>> This too:
>>
>> (try (/ 4 0) (catch Exception e (println (ancestors e))))
>>
>> This too:
>>
>> (try (/ 4 0) (catch ArithmeticException e (println (ancestors e))))
>>
>> How is this possible? Shouldn't Exception be an ancestor?
>>
>> Or, more generally, shouldn't something be a parent?
>>
>>
>>
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