I don't know why you say the number of rows is hard coded. Why can't you just do this:

foreach my $row (0 .. $lastRow)
{
}

[download]

But you might consider not storing it as a 2-dimensional array, but rather as a 22x80 character-long string. Then traversal becomes simply a matter of using substr and multiplying indexes (and it duplicates the behavior of wrapping that most terminals exhibit):

my $screen = ' ' x ($rows * $columns);
foreach my $row (0 .. $rows-1)
{
   my $rowText = substr($screen, $row*$columns, $columns);
}
# sets text, returns old text.
sub setTextAt
{
  my $x = shift;
  my $y = shift;
  my $text = join('', @_);
  substr($screen, $y * $columns + $x, length($text), $text);
}

[download]

In reply to Re: Fun with two-dimensional arrays by bikeNomad
in thread Fun with two-dimensional arrays by FoxtrotUniform

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.