Why did you ignore the hint to avoid <pre>-Tags around your post?
Did you only think about the given code, or did you try it?
You also could have a look at Getopt::Long, which explains what happens, if an option doesn't have its optional argument...
Another possibility is something like this:
#! /usr/bin/perl
# vim:ts=4 sw=4 sts=4 et nu fdc=3:
use strict;
use warnings;
use Getopt::Long;
my $x = "unset";
GetOptions(
'x:s' => sub { $x = $_[1] ? $_[1] : 'true' },
) or exit 255;
print "$x\n";
It's up to you to refine the checks and values to fit your needs.
added:
$ perl /tmp/getopt.pl
unset
$ perl /tmp/getopt.pl -x
true
$ perl /tmp/getopt.pl -x foo
foo
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Are you posting in the right place? Check out Where do I post X? to know for sure.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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