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can I get a loop?

by Anonymous Monk
on Feb 05, 2001 at 23:36 UTC ( [id://56480]=perlquestion: print w/replies, xml ) Need Help??

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

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Re: can I get a loop?
by kilinrax (Deacon) on Feb 05, 2001 at 23:40 UTC
    Assuming you have a hash ('%usernames') of the usernames already taken: 
    my $username;
foreach (@usernames) {
    if (!exists $usernames{$_}) {
        $username = $_;
        last;
    }
}

    [download]
    After which, '$username' will either contain the first unused username from '@usernames', or be undefined, if none were available.
[reply]
[d/l]
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