[ruby-talk:00613] Re: Bug in Array#clone!

Hi, 

In message "[ruby-talk:00596] Re: Bug in Array#clone!"
    on 99/08/10, Yukihiro Matsumoto <[e-mail]> writes:

>`clone' returns the complete copy (except object id) of the original
>object, but dup is not necessarily that complete.  dup for Array,
>Hash, and String does only copy their contents; no singleton method,
>instance variable, nor freeze flag are copied.

Thanks you very much. I have to read the document more and more :-(

>I should explain this more in detail; I changed the documents like:
>
>    dup
>           Returns a newly created array which has the same
>           elements to the receiver. clone returns the complete
>           copy of the original array including freeze status and
>           instance variables. On the other hand, dup copies the
>           array contents only.
>
>Or should I copy the instance variables for these classes, and leave
>documents unchanged?

The latter looks better. It may be easy to see that the defference
between clone and dup is frozen-property only. 

>|Thanks for your quick job. I've gotten "ok" for almost all but `IO':
>
>Oh, I forgot to make a patch for io.c:

Thanks! Maybe, I've understood *SETUP macros at last :-)

-- gotoken