[Ruby-DBI-devel] Re: Problem with ruby-dbi-all-0.0.20 and/or ruby-1.8.0

[Brian C. <B.C...@po...>]

On Tue, Aug 05, 2003 at 11:35:19PM +0900, ts wrote:
> >>>>> "B" == Brian Candler <B.C...@po...> writes:
> 
> B>   def clone
> B>     clone_with(@arr.dup)
> B>   end
> 
>      alias dup clone

       alias :dup :clone

OK that works... thank you.

I assume that for 'dup' and 'clone', one used to be implemented in terms of
the other. Is there a comparison of these two methods anywhere? In the
Pickaxe it says:

"dup typically uses the class of the descendent object to create
 the new instance"

But I'm not quite sure what that means. Is it saying that typically Foo#dup
is implemented by calling Foo.new (or self.class.new) ?

Cheers,

Brian.