This is a followup to a question from 20 years ago.

I've got this test script for conditionally loading debug subroutines from a module I wrote: 

#! /usr/bin/env perl

use v5.14;
use warnings;

use if $ENV{MYMOD_DEBUG_LEVEL}, 'Test::Utils::Dump' => qw(d d0 d1 dd d
+i $doff);

d('hi');
di('hi');
dd('hi');

[download]

If the debug level is unset, the script will throw errors because the debug subroutines were not loaded. I could do this: 

defined &d && d('hi');
defined &di && di('hi');
defined &dd && dd('hi');

[download]

But this is ugly. A less ridiculous solution is to write stubs for each sub I want to possibly load: 

sub d {} sub d0 {} sub d1 {} sub dd {} sub di {};
use if $ENV{MYMOD_DEBUG_LEVEL}, 'Test::Utils::Dump' => qw(d d0 d1 dd d
+i);

d 'hi';
di 'hi';
dd 'hi';

[download]

But this still feels a big hacky. So I'm wondering if Perl Gods have bestowed upon us a gift for accomplishing this feat more cleanly and elegantly in recent years. Thanks.

EDIT: Using sub AUTOLOAD will catch subs that don't exist but from what I can tell, I would still need to wrap subroutine args in parens which I'd rather not do.

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In reply to Best practice for handling subroutines that are conditionally loaded? by nysus

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