Honestly, this is so not the way you want to do an infinite list. I won't even get into the why (other responders already have), and Google can tell you the details of it better than I can anyway (although maybe not perl-specific, but the theory at least).

The following is the more commonly accepted way to go about such a thing. 

my $counter = 0;
my $generator = sub { ++$counter };

while (1) {
    print $generator->();
}

[download]
To re-do your example it would be this: 
my $gimme_an_A = sub { 'a' };

while (1) {
    print $gimme_an_A->();
}

[download]
Your approach is very memory wasteful since you have an infinitely growing @array, which will eventually consume all available system memory. The above versions never store previous values (which I can only assume you are never using anyway) so they can run in a pretty small and compact memory space.

-stvn

In reply to Re: self-feeding infinite loop by stvn
in thread self-feeding infinite loop by spx2

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.