Hi!

I can't understand why the following code outputs as if the array had only one element.

Does it really have just one element? If yes, why? (since I call the sorter sub 2 times)

If I take out the my's it outputs as having 3 elements. Really confused. Here is the code:

#!/usr/bin/perl

use strict;


my $lineA = "CTACACTTCCATGACCACACATTAATAATTGTGTTCCTAATTAGCTCATTAGTACTC
+TAC";
my $lineB = "CTACACTTTCACGATCATACACTAATAATCGTTTTTCTAATTAGCTCTTTAGTTCTC
+TAC";

sub altrIter{return (($_[0] % 10)) };
sub altrInc {return ($_[0]+1) };

&sorter ($lineA, \&altrIter, \&altrInc);
&sorter ($lineB, \&altrIter, \&altrInc);

my @allSeq;
my $index=0;

sub sorter {
    my $i = &{$_[1]}($index);
    $allSeq[$i]= ($allSeq[$i].$_[0]);
    $index =  &{$_[2]}($index);
    print "in: ".$_[0]."\n";
}

for (my $i = 0; $i <= $index; $i++){
    print "seq -->".$allSeq[$i]."\n";
}

[download]
Thanks for any help.

In reply to confusing number of elements in an array by kotoko

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.