Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
There is a fine difference to note here.

On the one hand you have the "standard" resources - memory, file handles and the like; these resources are provided by the interpreter as it executes your script. These resources are also guaranteed to be cleaned up on exit() (so long as you're not dumping core or something).

Then there's "external" resources the code in execution may have allocated - like, a database driver may have asked the database to allocate a handle. These resources will not be released automatically, rather, the code in question has to make sure they are returned. In case you're using CPAN modules, it is safe to assume that, bugs aside, all of them clean up behind themselves.

As has been mentioned, you may want to look into what END { } and DESTROY { } do: define a blocks of code that will always be executed the end of the program or when the corresponding object goes out of scope, respectively. This is (almost) regardless of how you fall out (of the program or scope). Properly written modules (such as the ones available on CPAN :)) use these to make sure they neatly clean up after themselves.

Long reply, short point: yes. You can use exit() to fall out of your scripts at whichever point you choose.

In reply to Re: How aggressively does Perl clean up when you exit()? by Aristotle
in thread How aggressively does Perl clean up when you exit()? by dave_aiello

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others musing on the Monastery: (6)
    As of 2019-11-19 23:51 GMT
    Find Nodes?
      Voting Booth?
      Strict and warnings: which comes first?

      Results (96 votes). Check out past polls.