The fact that the OP seems to want anonymous arrays for all the values makes things a bit easier. You can return an AoA of key and (possibly empty) value parts from a global match in an anonymous subroutine. Pass this into a map to deal with the value string using split.

$ perl -MData::Dumper -E '
> $text = q{a 2 b 4,5,6 c d e 45,657,-67};
> %hash =
>    map { $_->[ 0 ] => [ split m{,}, $_->[ 1 ] ] }
>    sub {
>        push @arr, [ $1, $2 ]
>           while $_[ 0 ] =~ m{\s*([a-z])\s+([-,\d]*)}g;
>        return @arr;
>        }->( $text );
> say Data::Dumper->Dumpxs( [ \ %hash ], [ qw{ *hash } ] );'
%hash = (
          'e' => [
                   '45',
                   '657',
                   '-67'
                 ],
          'c' => [],
          'a' => [
                   '2'
                 ],
          'b' => [
                   '4',
                   '5',
                   '6'
                 ],
          'd' => []
        );
$

[download]

I hope this is helpful.

Cheers,

JohnGG

In reply to Re: making a text file to an hash array by johngg
in thread making a text file to an hash array by changma_ha

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