How can I sort files by timestamp without slurping?

hi are you doing everybody...

How can I sort files by timestamp without slurping?

the idea is to look into a directory, pick up the oldest first and so
on until the 'youngest' one.
file100..all the way to file1.

I found this solution somewhere,

my @sorted = map { $_->[0] }
sort { $b->[1] <=> $a->[1] }
map { [ $_, -M $_ ] }
@files;

By the looks of it, it does slurp the all the files from the source
directory into an array and does the sorting there.

I'm thinking on incorporating a timestamp sorting mechanism without
slurping.

Since above solution looks like sorcery of some kind to me,
How can I modify it to fit below? or if you have any other ideas
please let me know. Thanks in advance.

MOVE_FILES:
while (defined (my $file = readdir (SOURCEDIR))){

#skip . and .. files
next MOVE_FILES if $file =~ m#^\.\.?$#;

#the sorting should it take place here I guess.


#move files
move ($file, $target_path) or die $!;


}

.

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