Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
I found this feature in the 5.8.0rc2 and made comment on it as a means by which to perform temporary file-type operations within memory space in this follow-up comment to my tutorial on Using Temporary Files in Perl.

Another nifty feature in 5.8.0 to do with the open function and temporary files is the creation of anonymous file handles. For example:

open( $fh, '+>', undef ) || die $!;

Where the undefined value is a literal undef statement, rather than an undefined variable. This syntax will open a file handle and where permitted by the file system, unlink the file while holding it open. The result is an anonymous STDIO stream which will be lost when the file handle is closed.

Note too that this anonymous file handle functionality is also available through the File::Temp module which has been incorporated into the core 5.8.0 distribution.

 

perl -e 'print+unpack("N",pack("B32","00000000000000000000000111000110")),"\n"'


In reply to Re: Open Has a New Trick by rob_au
in thread Open Has a New Trick by Zaxo

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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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?
    Username:
    Password:

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

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (9)
    As of 2014-07-31 21:03 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite superfluous repetitious redundant duplicative phrase is:









      Results (253 votes), past polls