Dear Monks,

I am getting this error message:

Can't locate object method "display_output" via package "MyClass" at MyClass.pm line 25.

Here is the MyClass constructor:

package MyClass;

use strict;
use warnings;
use 5.010;

sub new {
    my $self = {};
    
    $self->{ObjA_ref} = shift;
    $self->{ObjB_ref} = shift;


    bless $self;
    return $self;
}

[download]

I pass an ObjA reference and an ObjB reference to that new() function when I create an object of MyClass, e.g.

my $a_ref = ClassA->new();
my $b_ref = ClassB->new();

my $obj_ref = MyClass->new($a_ref, $b_ref);

[download]
The line giving me the error is this one:

sub do_stuff {  #this function is defined in MyClass
    $self = shift;

    $self->{ObjA_ref}->display_output("blah");

[download]

The sub display_output() is defined in ClassA.pm. What do I need to add to MyClass.pm to make that work? All files are in the current directory.

In reply to classes that use composition by 7stud

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.