I don't get the warning with: 
my %baseball = (
    mets      =>   "new york",
    orioles   =>   "baltimore",
    twins     =>   "minnesota"
);

if ($baseball{yankees} .= $baseball{mets})  { # edited

    foreach $_ (keys %baseball) {
        print "$_ => $baseball{$_}\n";
    }
}

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In reply to Re: problem unless I use ".=" by cgmd
in thread problem unless I use ".=" by cgmd

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