Something is off here.

I copied the program to a file ~/_/0/1.pl and the module to ~/_/0/customPerlMod.pm. I changed the path to lib to actually point to the directory: 

use lib $ENV{HOME} . '/_/0';

[download]
and added the following line: 
print "<$string>\n";

[download]
When I run the script, I get back the following line:
<ll>

[download]

I get the same output when I drop the fully qualified name, as it's not needed with imported subroutines: 

$string = trim ($string);

[download]

Prototypes are the ($) after subroutine names in their declarations. They tell Perl parser how to parse the arguments, they are not argument lists. If you don't know what they are and what they do, you should drop them.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^3: Trouble usig a subroutine from a custom module by choroba
in thread Trouble usig a subroutine from a custom module by fritz1968

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.