Thank you Loops and boftx!

Using the constructor for empty array as Loops showed, the script indeed ran without spewing errors.

I have looked a bit into the long script boftx pointed me at. It really remembers me of a game I liked much on old Apple II :) Many interesting Perl details, in a well-readable script. Not one of these cryptic examples in the docs... But I'll look at it tomorrow when I am not tired as now.

However, when trying to output the contents of the collected directory tree structures, I ran into another problem after adding a sub for this. I get an error "Global symbol "$mydir" requires explicit package name..." which I do not yet understand, as this is a my variable of a subroutine... Please excuse if I made an obvious blatant mistake :(

use strict;
use warnings;
use diagnostics;
use 5.014;  # so push/pop/etc work on scalars (experimental)

use MooX::Struct -rw, Dirnode => [ qw( $dirname @subdlist ) ];
my $dirroot = crawldir( ".");
printdirs ($dirroot);

sub printdirs {
    my $mydir = $_;
    
    # if subdirectories exist, walk them first
### vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv PROBLEM
    if (@($mydir->subdlist)) {
#    if ($mydir->subdlist) {
### ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ PROBLEM
        foreach ($mydir->subdlist) {
            printdirs( $_);
        }
    }
    print "Dir: ", $mydir->dirname, "\n";
}

sub crawldir {
    my $curpath = shift;
    my $dno = Dirnode["", []];
#   my $dno = Dirnode->new();
    $dno->dirname( $curpath );

    opendir(DIR, $curpath);
    my @files = readdir(DIR);
    closedir(DIR);
    print "crawldir in directory ", $dno->dirname, "\n";
    foreach (@files) {
        next if $_ eq '.' or $_ eq '..';
        my $file_path = "$curpath/$_";
        $file_path =~ s|/+|/|g;
        if (-d $file_path) {
           print "crawldir in directory ", $dno->dirname, ": calling c
+rawldir( $curpath\/$_)\n";
           push @{$dno->subdlist}, crawldir( "$curpath\/$_" );
        }
    }
    return $dno;
}

[download]

In reply to Re^4: Novice problem: How to push a MooX Struct into a list? by dissident
in thread Novice problem: How to push a MooX Struct into a list? by dissident

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.