From: Paul Lutus <nospam@...>
Date: 2006-11-30T07:05:13+09:00
Subject: Re: Need a range, but not getting it. . . .

Rimantas Liubertas wrote:

>> >
>> > Your problem was that, although gsub! (with the !) normally modifies
>> > the receiver, 'files' wasn't the receiver (to_s was), so you weren't
>> > actually changing 'files'.
>>
>> Not correct. Try it.
> 
>>> files=["im123000-im123006"]
> => ["im123000-im123006"]
>>> files.to_s.gsub!(/-/,'..')
> => "im123000..im123006"
>>> files
> => ["im123000-im123006"]

Because the original example used a string, and yours uses an array, it is
not a valid counterexample.

Applying ".to_s" to a string has no effect, consequently the receiver is
changed. Applying ".to_s" to anything other than a string makes a copy.

-- 
Paul Lutus
http://www.arachnoid.com