Dear Monks,

Forgive me if this question is naive/obvious...

I'm currently working on a project where I keep separate "working" and "development" versions. Currently, the development version uses

use strict;
use warnings;
use Data::Dumper;
use CGI::Carp;
use etc...

[download]
I don't need this stuff for the working version, and therefore don't want it to load. Instead of commenting out these lines, is it possible to programmatically control which lines are used and which are not?

For example:

#!/user/bin/perl

# BEGINs run FIFO, so set the global
# in its own block.
BEGIN {
    
    # A global switch that would
    # ideally control several options
    # throughout the program and would
    # be the only difference between
    # the "working" and "development"
    # versions.
    our $DEBUG = 1;
}

# Now set which things to import.
BEGIN {

    # These will only be used in the
    # debugging version.
    if ($DEBUG) {
        use strict;
        use warnings;
        use Data::Dumper;
        use CGI::Carp;
    }

    # These are needed by the program
    # regardless.
    use CGI::Minimal;
    use HTML::Template;
    # ... others, etc.
}

[download]
I know this doesn't work, but hopefully this is enough to give an idea of what I'm trying to accomplish.

Thanks in advance.

In reply to Controlling "use" statements by nodice

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.