I wrote the following code: 
if(defined($opt_href->{"data"})) {
    @roots_paths = (split /,/, $opt_href->{"data"});
} else {
    my $file_path = $opt_href->{"file"};
    open(my $fh, '<', "$file_path") or return 0;
    while (my $row = <$fh>) {
        chomp($row);
        if ($row =~ /(.*),(.*)/) {
            my ($main,$sub) = ($1,$2);
            my $fub_path = $main."/".$sub;
            next unless(isValidDir($fub_path));
            push(@{$paths{$main}},$fub_path);
            push(@roots_paths,$main);
        }
    }
    close ($fh);
}

foreach my $main (sort(uniq(@roots_paths))) {
    if(defined($opt_href->{"data"})) {
        find( sub { get_valid_dir( \@list_of_dirs, $_ ) }, $root_path)
+;
    } else {
        @list_of_dirs = @{$paths{$main}};
    }
    
    # More same code here...
}

[download]
Before that, It only worked for $opt_href->{"data"}. Now I'm trying to add $opt_href->{"file"}.
In case of $opt_href->{"data"} I just split a string of paths in format: ~main~,~main~,...,~main~ and for each main I find its subs.
For $opt_href->{"file"} I get a file where each line is in format of ~main~,~sub~ and in that case I don't need to find them.
In the first case I use the array @roots_paths and in the second case I have to use two structures %paths and @roots_paths.
I'm looking for a way to simplify it, I don't like the additional push push(@roots_paths,$main); I have to do. Is there a way to achieve it? Somehow using the same structure?
Hope my question makes sense.

In reply to using less structures by ovedpo15

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.