What I'm trying to do is to turn a single list of files in my directory into an array of arrays. I am having trouble with this "for" loop: 

$num_cols = 5;
@files = <*>;

for (@files) {
   undef @bb;
   for ($i = 0; $i < $num_cols; $i++) {
      push @bb, shift @files; }
   push @data, [ @bb ];
}

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Now if $#files is relatively small, or $num_cols is relatively large, then all the elements in @files get put into @data somewhere, and @files ends up empty. However, as $#files get higher, and/or $num_cols decreases, then when the loop finished, there are still some elements left in @files, and @data doesn't have all the files I globbed. Any clues?

In reply to Why doesn't this for loop work like I expect? by husker

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