in reply to reading input into a number of arrays

Perl doesn't support the comma separated indices for multidimensional arrays. Instead of 
$a[$i, 1]

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use

$a[$i][1]

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Update: Use warnings, Perl will tell you: 

Multidimensional syntax $a[$i,1] not supported at ...

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

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Re^2: reading input into a number of arrays
by tobyink (Canon) on Feb 25, 2020 at 21:41 UTC

    You can emulate multi-dimentional arrays with hashes though. It's a feature not many people use.

    my %multidim;
my $x = 3;
my $y = 4;
$multidim{ $x, $y } = 42;

print $multidim{ $x, $y }, "\n";

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    toby döt ink
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[d/l]
Re^2: reading input into a number of arrays
by Dannypje (Initiate) on Feb 25, 2020 at 16:11 UTC
    Choroba, thanks! I knew this. My shame is infinite.
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