I had wanted to store a summary of multiple calls to a sub in a module, and then get that summary out of the module at the end of the program. But I ran into the "closure issue".
Now two questions?
1)This prints 2, not 3 as I had hoped it would (because I used a named sub as a closure), but why don't I get a "stay shared" warning with either diagnostics or -w (I use ActiveState perl for win32)?
2) Is there a way to store the results of cumuative calls to a module sub in that module, or do the results have to be stored by the caller?
Thanks 
use strict; use diagnostics;
up();
up();
print get();
{
my $foo = 1;
sub up {
    $foo++;
sub get {$foo}
}
}

[download]

In reply to Why no stay shared warning? by tenya

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.