Re: [Omaha.pm] for loop quickie

["Dr. Dhundy R. Bastola" <kiranbina@gmail.com>]

I really appreciate when Andy breaks it up and makes people like us feel
welcome. I wanted to let you know that you are helping people like me learn
well by doing so. Thanks
Kiran

-----Original Message-----
From: omaha-pm-bounces+kiranbina=gmail.com@pm.org
[mailto:omaha-pm-bounces+kiranbina=gmail.com@pm.org] On Behalf Of Andy
Lester
Sent: Monday, May 22, 2006 4:14 PM
To: Perl Mongers of Omaha, Nebraska USA
Subject: Re: [Omaha.pm] for loop quickie

>
> after:
>
>    for (@row) {
>       s/[^ -~]//g;
>       s/\|/:/g;
>    }

Beautiful.  Getting out of the C mindset of keeping a loop index is  
one of the big steps into Perl mastery.

Note that in this example, there's an implicit $_ being used as the  
loop variable.  You can also make it explicit:

for my $entry (@row) {
     $entry =~ s/...../;
}

In this case, although it looks like $entry is a temporary variable,  
and that changes to $entry will get thrown away, that's not the  
case.  $entry is an alias to the iterated variable.

xoa


--
Andy Lester => andy@petdance.com => www.petdance.com => AIM:petdance



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