Basically what I want to know is: is there a way to open those files with two for loops like so 
for ($i; $i<=4; $i++) {
  for ($j; $j<=4; $j++) {

#etc

[download]
Yes, you can do that, but that would be very inefficient and that's most probably not what you should do, because it would mean opening the second series of files a number of times, and there is nothing in what you've described that would make this necessary.

With the code that I have provided in my first post (including the small corrections I made on the @ARGV array that I had forgot to remove in the second for loop), you should be able to read all the files.

If, on the other hand, you want to combine in some ways files from your first set with files of your second set, then it is more complicated, but you still don't want to read the same files many times over. But the bottom line is that there is nothing in what you said so far that indicates something in this direction.

In reply to Re^5: reading files in @ARGV doesn't return expected output by Laurent_R
in thread reading files in @ARGV doesn't return expected output by fasoli

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.