I am investigating the use of the getopt method with a dispatch table to process command line arguments. I have found a lot information on the web regarding the topic, but I can't get the following simple example to work:

#!/usr/local/bin/perl

# Argument options using Dispatch Tables

use strict;
use Getopt::Std;

my %opts = ();
getopts ('dhp', \%opts);

%opts = (       # For each option, call appropriate subroutine.
          "-h" => \&help,
          "-d" => sub {print "\nRun DEV COMPARE\n";},
          "-p" => \&PROD,
          "_default_"  => \&default, );
          
sub PROD {print "\nRun Production COMPARE\n";}

sub help {print "\nHelp text\n";}

sub default {print "\nThat is not a valid option\n";}

[download]

The code runs without error, but does nothing when I enter any of the valid options that I defined as arguments. Any help would be appreciated. Thank you.

In reply to Parsing options with Getopt & Dispatch Table by MKJ747

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.