Hmm, I'd be somewhat concerned about this, purely because it is relying on effects during global destruction - I don't know exactly what order things happen during this phase, but based on bug reports I've seen it seems possible that in some cases some or all of the strings in the $on_close arrayref may get destroyed before $on_close itself.

If I remember correctly, the symptom would be "use of uninitialised value ... during global destruction", and one or more directories would not be cleaned up.

However I do use DESTROY effects on scope exit a lot - if you were to wrap a block around the main program and declare $On_close within that block I'd have every confidence in it.

Hugo


In reply to Re: Automatically deleting selected directories on program exit by hv
in thread Automatically deleting selected directories on program exit by eyepopslikeamosquito

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.