Here is an example of a deep copy, for reference. Note that this is not efficient - you'd be better off using a module as GrandFather suggests. (Modules are great for getting things done, but don't always show you how they are doing them.)

my @a1; # First array

# Pretend we're putting something in the first array.

my @a2=aoacpy(@a1);

sub aoacpy
{
  my @array_in=@_;
  my @array_out;
  # Iterate through parent array.
  for (my $i=0; $i<scalar(@array_in); $i++)
  {
    # Iterate through child array - note that 
    # we do this for each member of the parent 
    # array.
    for (my $j=0; $j<scalar($array_in[$i]); $j++)
    {
      $array_out[$i][$j]=$array_in[$i][$j];
    }
  }
  return @array_out;
}

[download]

I'm now scratching my head trying to work out why this is so slow - it shouldn't be iterating that many times.

In reply to Re^2: Problem in Passing A Multidimensional Array into a Function by smiffy
in thread Problem in Passing A Multidimensional Array into a Function by Anonymous Monk

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.