> As the variable $tally is defined beforehand and preceded by the keyword "my", I don't understand what is wrong. How could I fix this?

The scalar variable $tally is different to an array variable @tally. Single members of the array are called with a dollar sign followed by a square bracket, but they are still elements of the array @tally. So, you need to declare the array:

my @tally;

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> How could I get rid of "(?^:" and ")"?

One possibility is to use a regex: 

for my $i (0 .. $#regexes) {
    my $regex = $regexes[$i];
    $regex =~ s/^\(\?\^://;
    $regex =~ s/\)$//;
    print "$regex:\t$tally[$i]\n";
}

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> Would it be possible to save this output to a file?

The easiest way is to use redirection in your shell, it should work even in MSWin. 

perl script.pl > output.txt

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If you want to write to a file from within Perl, open a file for writing and print to it: 

open my $out, '>', 'output.txt' or die $!;
for my $i (0 .. $#regexes) {
    my $regex = $regexes[$i];
    $regex =~ s/^\(\?\^://;
    $regex =~ s/\)$//;
    print {$out} "$regex:\t$tally[$i]\n";
}

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map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^5: Entity statistics by choroba
in thread Entity statistics by LexPl

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