I certainly do not advocate doing it this way. Use one of the modules and reap the benefits of testing, a user base, docs you don't have to write, and future improvements. This is just for fun and because I found dmmiller2k's example a bit hard to read. 

while (<DATA>) {
    chomp;
    print join(" + ", expand($_)), $/;
}

sub expand {
    my $input = shift;
    $input =~ s/[^-\d,]+//g;
    $input =~ s/-/../g;
    my ( %tmp, @tmp );
    @tmp = ( eval "$input" );
    @tmp{@tmp} = (1) x @tmp; # dedupe
    return sort { $a <=> $b } keys %tmp;
}

__DATA__
1,7-10,3-5,15
or even ... my $input = "1,7-10,3-5,15";

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In reply to Re: Perl Module for dealing with number ranges by Your Mother
in thread Perl Module for dealing with number ranges by VinsWorldcom

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