Hi Monks of Wisdom, subject explains. I have the following code: 
#!/usr/bin/perl -w
$dir = "some_dir";
@file_list = glob ("$dir/*");

GetOptions (
 "f=s" => \@file_list,
);
foreach (@file_list) { print { $_\n"; }

[download]
I want to get following behaviour: If I don't give -f option, script must assume whole list in the directory must be taken to the @file_list. If I give only the number of -f arguments, it must overwrite the default. However, it doesn't. Getopt::Long doesn't overwrite but appends the -f args. For the case: 
#!/usr/bin/perl -w
$dir = "some_dir";
$file = "$dir/some_file");

GetOptions (
 "f=s" => $file,
);

[download]
... it does overwrite, rather than append. Why is the behaviour for arrays different? Is there a way to switch off append behaviour for arrays? Perl version is 5.8.0. Regards!

In reply to Getopt::Long, default of multiple options can not be overwritten by argument by utku

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.