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Rename File Name in Array

by drodinthe559 (Monk)
on Jul 20, 2008 at 11:17 UTC ( [id://698910]=perlquestion: print w/replies, xml ) Need Help??

drodinthe559 has asked for the wisdom of the Perl Monks concerning the following question:

Hey there, is there a reason why the below code DOES NOT work when the variable is defined within loop, but works correctly when a global variable? Also, is there a way to see the renamed file in the array after its been changed? 
foreach my $x (@results){
    my $ext = "A";
    rename ($x->[0], "USB" . $ext);
    print $x->[0] . "\t" . localtime($x->[1]) . "\n";
    ++$ext;
}

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Re: Rename File Name in Array
by rhesa (Vicar) on Jul 20, 2008 at 11:22 UTC
    It "doesn't work", because $ext is reset to "A" on every iteration. You need to declare and initialize that variable outside the loop.

    To update $x->[0] after the rename, simply do $x->[0] = "USB" . $ext;.

[reply]
[d/l]
[select]
      Thanks, I knew it was something cheesy.
[reply]
        Is there anyway to report that the renaming was successful?
[reply]

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