Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Another great alternatives for making temporary filehandles is IO::File's new_tmpfile() method.

I prefer to use this method when their is no need to know the name of the file. In fact, IO::File hides these implementation details from you completly, and very nicely I might add. It Does the Right Thing with respect to security, file permissions and the naming of the file to ensure there is no "filename collisions".

Here's a quick example to illustrate how close it is compared to standard IO::File handle:

use IO::File; my $temp_fh = IO::File->new_tmpfile or die "Could not open a temporary file: $!"; #Save some stuff in the file handle $temp_fh->print('this stuff to the file handle'); #Rewind to the beginning $temp_fh->seek(0, 0); #It can do anything that a normal IO::File file handle can while(my $line = <$temp_fh>) { print $line; #prints 'this stuff to the file handle' }

I find temp files are really useful if you need to do alot of processing on large files/strings, and you can't do all the processing in memory.

Here you will see a real-world example of IO::File's new_tmpfile() method in action. I wrote this example to show an interesting way to prepend any string to a filehandle.


In reply to Re: scratching the surface of File::Temp by dkubb
in thread (code) scratching the surface of File::Temp by ybiC

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 imbibing at the Monastery: (11)
    As of 2014-08-28 07:26 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The best computer themed movie is:











      Results (257 votes), past polls