I'm trying to figure out the behavior of this, I think it's a bug but would like some confirmation, and whether it's in the latest version or already known. Instead of calling 'can' it calls main() recursively:
#!/usr/bin/perl

use strict;
use warnings;

my $i = 0;

main();

sub main {
  exit if $i++ > 10;
  print "Calling foo()\n";
  foo();
}

sub foo {
  print "foo()\n";
  my $fn = main->can("bar") or return;
  print "We can bar\n";
  $fn->();
}


__END__

[download]
Output: 
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()
Calling foo()
foo()

[download]

In reply to Class->can() bug or user error by runrig

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.