From: "Abinoam Jr." <abinoam@...>
Date: 2011-01-18T14:11:29+09:00
Subject: Re: Calling by Reference - Two Questions

On Tue, Jan 18, 2011 at 12:34 AM, Gary Wright <gwtmp01@mac.com> wrote:

> They both work.  Remember that myswap!(a) changed the array to [5,2] and so myswap2! changes it back to [2,5].
>
> Gary Wright

Exactly.

One more thing, in the first try with myswap the returned value is
being ignored.

> > myswap a # => [5,2] (new object)
> > puts " myswap #{a} #{a.object_id} " myswap 25 27431650

Assign the returned value to a variable.

b = myswap a

Now b is the "swap" of a and they have different object_ids.

Abinoam Jr.