find/rule for everything

#### if the number of dirs you expect fits in memory

#!/usr/bin/perl --
use strict; use warnings;
use Path::Tiny qw/ path cwd /;
use File::Find::Rule qw/ find rule /;
use autodie qw/ chdir /;
my $cwd  = cwd();
## all dirs
#~ my @dirs = find( directory => in => 'antarctica' );
## only depth 1
my @dirs = find( directory => maxdepth => 1 , in => 'antarctica' );
for my $dir( @dirs ){
    Voltronize( $dir );
}
chdir $cwd;
[download]

#### if the number of dirs you expect is huge

#!/usr/bin/perl --
use strict; use warnings;
use Path::Tiny qw/ path cwd /;
use File::Find::Rule qw/ find rule /;
use autodie qw/ chdir /;
my $cwd  = cwd();
## iterator
my $dirs = rule( directory => maxdepth => 1 )->start( 'antarctica' );
while( defined( my $dir = $dirs->match ) ){
    Voltronize( $dir );
}
chdir $cwd;
[download]

Or readdir/glob with Path::Tiny (easier than actual readdir , more memorable than glob )

#!/usr/bin/perl --
use strict; use warnings;
use Path::Tiny qw/ path cwd /;
use autodie qw/ chdir /;
my $cwd  = cwd();
my @dirs = grep { -d $_ } path( 'antarctica' )->children();
for my $dir( @dirs ){
    Voltronize( $dir );
}
chdir $cwd;
[download]

The Path::Tiny iterator is no find/rule but still beats readdir/glob

#!/usr/bin/perl --
use strict; use warnings;
use Path::Tiny qw/ path cwd /;
use autodie qw/ chdir /;
my $cwd  = cwd();
my $dirs = path( 'antarctica' )->iterator( {
    recurse         => 0,
    follow_symlinks => 0,
} );
while( defined( my $path = $dirs->()  ) ){
    Voltronize( $path ) if $path->is_dir;
}
chdir $cwd;
[download]

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